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Pharmacy Guide

Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.

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Clindamycin 150mg/ml Solution for Injection or Infusion

⚠ This medicine appears to have been discontinued

The electronic medicines compendium (emc) no longer publishes a Summary of Product Characteristics for this product, which usually means it is no longer marketed in the UK. The patient leaflet below is kept for reference, but the product may not be available.

If you were prescribed this medicine, other products containing Clindamycin phosphate may still be available. Do not stop your treatment — ask your pharmacist or GP what to use instead.

Active substance: Clindamycin phosphate

Equivalent medicines (same active substance, strength and form)

Source: electronic medicines compendium (emc)
Official leaflet: Read the PIL on emc

What it is and what it is used for

for Clindamycin 150mg/ml solution for injection or infusion (called Clindamycin Injection in the rest of this leaflet). belongs to a group of medicines called antibiotics. Antibiotics are used to treat infections. Clindamycin injection is used to kill certain serious bacterial infections. You will usually be in hospital when you receive this medicine.

What you need to know before you take it

Clindamycin Injection You should not be given Clindamycin Injection:  if you are allergic to clindamycin or any of the other ingredients of this medicine (listed in section 6);  if you are allergic to lincomycin Warnings and precautions Talk to your doctor, pharmacist or nurse before you are given Clindamycin Injection :  if you have diarrhoea or usually get diarrhoea when you take antibiotics or have ever suffered from problems with your stomach or intestines (bowel disease). If you develop severe or prolonged or bloody diarrhoea during or after using Clindamycin Injection tell your doctor immediately since it may be necessary to interrupt the treatment. This may be a sign of bowel inflammation (pseudomembranous colitis) which can occur even after 2 to 3 weeks following treatment with antibiotics.  if you have any allergies such as hayfever, asthma or eczema;  if you have problems with your kidneys. Acute kidney disorders may occur. Please inform your doctor about any medication you currently take and if you have any existing problems with your kidneys. If you experience decreased urine output, fluid retention causing swelling in your legs, ankles or feet, shortness of breath, or nausea you should contact your doctor immediately;

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if you have problems with your liver.

Clindamycin Injection does not get into the brain and is therefore not suitable for treating serious infections in and around the brain. Your doctor may need to give you another antibiotic if you have these infections. Other medicines and Clindamycin Injection Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. Some medicines can affect the way Clindamycin Injection works, or Clindamycin Injection itself can reduce the effectiveness of other medicines taken at the same time. These include:    

erythromycin an antibiotic used to treat infection: Clindamycin Injection and erythromycin may not work as well when they are used together. oral contraceptive pill: the pill may not work and may not prevent pregnancy. Use additional contraception, such as a condom, while receiving Clindamycin Injection and for 7 days after your last dose of Clindamycin Injection. warfarin or other similar medicines used to thin the blood: you may bleed more than usual when taking these medicines together with Clindamycin Injection. Your doctor may need to perform regular blood tests to check how well your blood clots. CYP3A4 or CYP3A5 inducers like Rifampicin may impact effectiveness of the medicine.

If you are in hospital to have an operation or a hospital procedure tell your doctor you are taking Clindamycin Injection. Clindamycin Injection may increase the effect of certain medicines (such as those given to help your muscles relax). Tell your doctor or nurse if you are taking or have recently taken any other medicines, including medicines obtained without a prescription. Pregnancy and breast-feeding Pregnancy If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before they give you this medicine. Breast-feeding Tell your doctor if you will be breast-feeding while taking Clindamycin Injection as clindamycin may be passed into breast milk. Your doctor will decide if Clindamycin Injection is appropriate for you. Although it is not likely that a nursing infant will take in very much of the active substance from the milk it drinks, if your baby gets bloodstained diarrhoea or shows any signs of illness, tell your doctor at once. You should stop breast-feeding if this happens. Driving and using machines No effects on the ability to drive or use machines have been seen with Clindamycin Injection. Important information about the ingredients of Clindamycin injection. This medicine contains less than 1 mmol sodium (23 mg) per 2 ml ampoule, (prior to dilution) that is to say essentially 'sodium-free'.

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This medicine contains 26 mg sodium (main component of cooking/table salt) in each 4 ml ampoule (prior to dilution). This is equivalent to 1.3% of the recommended maximum daily dietary intake of sodium for an adult.

How to take it

to you You will usually be in hospital when you are given Clindamycin Injection. You will be given Clindamycin Injection by a doctor or nurse as an injection into your muscle, or infusion into a vein (using a drip). The injection or infusion will take 10-60 minutes. When giving you Clindamycin Injection, your doctor will ensure that the concentration of clindamycin does not exceed 18 mg per ml and the rate it is given to you does not exceed 30 mg per minute. If Clindamycin Injection is given too fast it could rarely cause a heart attack.

The recommended dose is In adults and elderly  The usual dose is 600-1200mg clindamycin per day. This will be given in 2, 3 or 4 equal doses over a 24-hour period.  If you have a very severe infection your doctor may increase your dose to a maximum of 2700mg per day. This will be given in 2, 3 or 4 equal doses over a 24-hour period. Doses up to 4800mg per day have been given in life-threatening cases. Use in Children The dose for children is based on your child's body weight.   

The doctor will decide how much to give your child. The usual dose is 15 to 25mg per kg of body weight. This will be given in 3 or 4 equal doses over a 24-hour period. If your child has a very severe infection your doctor may increase the dose to at least 300mg. The dose is not related to the weight of your child. This will be given in 3 or 4 equal doses over a 24-hour period.

Normally Clindamycin Injection is only given to patients in hospital. The medical staff will

be keeping a close eye on you during your treatment. If you need to have more than one course of treatment with clindamycin, your doctor may want to check that the clindamycin is not having any effect on the way your kidneys and liver are working. Long term use can also make you more likely to get other infections that do not respond to Clindamycin Injection treatment

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If you are given more Clindamycin Injection than you should If you think you have been given too much Clindamycin Injection tell a doctor or a nurse. If you think you have missed a dose of Clindamycin Injection Clindamycin Injection will be given to you by a doctor or nurse. If you think you have missed a dose tell your doctor or nurse. If you have any further questions on the use of this medicine, ask your doctor, pharmacist or nurse.

4. Possible side effects Like all medicines, this medicine can cause side effects, although not everybody gets them. Tell your doctor immediately if you develop:

  • severe, persistent or bloody diarrhoea (which may be associated with stomach pain or fever). This is a common side effect which may occur during or after completing treatment with antibiotics and can be a sign of serious bowel inflammation
  • signs of a severe allergic reaction such as sudden wheeziness, difficulty in breathing, dizziness, swelling of the eyelids or face or lips or throat or tongue, rash or itching (especially if affecting the whole body)
  • potentially life-threatening skin rashes:
  • blistering and peeling of large areas of skin, fever, cough, feeling unwell and swelling of the gums, tongue or lips
  • a widespread rash with blistering and peeling of large areas of skin, particularly around the mouth, nose, eyes and genitals (Stevens-Johnson syndrome), and a more severe form, causing extensive peeling of the skin (more than 30% of the body surface – toxic epidermal necrolysis)
  • widespread red skin rash with small pus-containing blisters (exfoliative dermatitis bullous)
  • skin rash, which may blister, and looks like small targets (central dark spots surrounded by a paler area, with a dark ring around the edge, known as erythema multiforme
  • fever, swollen lymph nodes or skin rash, these may be symptoms of a condition known as DRESS (Drug reaction with eosinophilia and systemic symptoms) can be severe and life-threatening. The symptoms of DRESS usually begins several weeks after exposure to Clindamycin
  • a rare skin eruption that is characterised by the rapid appearance of areas of red skin studded with small pustules (small blisters filled with white/yellow fluid) (Acute Generalised Exanthematous Pustulosis (AGEP))
  • yellowing of the skin and whites of the eyes (jaundice)

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  • a marked decrease in the number of blood cells which may cause bruising or bleeding or weaken the immune system (agranulocytosis), a slight decrease in the number of white blood cells (leukopenia), reduced blood platelet (thrombocytopenia)
  • heart and lungs stop functioning (when the heart suddenly stops pumping blood around the body)
  • fluid retention causing swelling in your legs, ankles or feet, shortness of breath or nausea

Other side effects Common: may affect up to 1 in 10 people

  • blood clot (vein inflammation)
  • abnormalities in liver function tests
  • rash characterised by a flat, red area on the skin that is covered with small bumps Uncommon: may affect up to 1 in 100 people
  • change of sense of taste
  • low blood pressure (feeling lightheaded, dizzy or faint)
  • feeling sick, diarrhoea
  • itchy skin
  • hives
  • pain, abscess (boil) Not known: frequency cannot be estimated from available data
  • reduced numbers of blood cells which may cause bruising or bleeding or weaken the immune system
  • an increase in the number of white blood cells (eosinophilia)
  • stomach pain, being sick (throwing up)
  • inflammation of the lining of the oesophagus (gullet) open sores or lesions in the lining of the oesophagus (gullet)
  • infection inside and around the vagina
  • irritation at the site of the injection Reporting of side effects If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any

Possible side effects

not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme Website:www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.

How to store it

Clindamycin Injection Keep this medicine out of the sight and reach of children.

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Keep ampoules in outer carton. Do not use this medicine after the expiry date which is stated on the carton and ampoule after EXP. The expiry date refers to the last day of that month. Do not store above 25C. Do not refrigerate or freeze. Once your doctor or nurse has opened the ampoule it should be used immediately. Any remaining Clindamycin Injection must be thrown away by the doctor or nurse. Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use . These measures will help protect the environment.

Contents of the pack and other information

What Clindamycin Injection contains

  • The active substance is clindamycin phosphate. Each ml contains 150mg clindamycin.
  • The other ingredients are disodium edetate, sodium hydroxide and water for injections. What Clindamycin injection looks like and contents of the pack Clindamycin Injection is a clear solution in a glass ampoule containing 2ml or 4ml of the solution for injection. This product is available in cartons containing 1 x 2ml, 1 x 4ml, 5 x 2ml or 5 x 4 ml ampoules. Not all pack sizes may be marketed. Marketing Authorisation Holder and Manufacturer Marketing Authorisation Holder Focus Pharmaceuticals Limited, Dashwood House, 69 Old Broad Street, London, EC2M 1QS, United Kingdom Tel: 0208 588 9131 Email: [email protected] Manufacturer Vianex SA,12th Km Athens Lamia National Road, Metamorfosi, Athens, Greece For any information about this medicinal product, please contact the Marketing Authorisation Holder, details provided above.

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For information in large print, audio CD or Braille please telephone + 44 (0)208 588 9131 or email [email protected]. This leaflet was last revised in August 2023. <————————————————————————————————————–> Technical Leaflet for healthcare professionals CLINDAMYCIN 150MG/ML SOLUTION FOR INJECTION OR INFUSION GENERAL INFORMATION Injection: Clindamycin 150mg/ml Solution for Injection or Infusion is for single use only. Any unused content should be discarded. Solution for infusion: Clindamycin 150mg/ml Solution for Injection or Infusion can be diluted with solutions for infusion containing: 0.9% sodium chloride and 5% dextrose. THERAPEUTIC INDICATIONS Clindamycin is indicated for the treatment of severe infections. Consideration should be given to official guidance on the appropriate use of antibacterial agents. Clindamycin does not penetrate the blood/brain barrier in therapeutically effective quantities. POSOLOGY AND METHOD OF ADMINISTRATION For intravenous or intramuscular infusion only. Parenteral (I.M. or I.V. administration). Clindamycin 150mg/ml Solution for Injection and Infusion must be diluted prior to I.V. administration and should be infused over at least 10-60 minutes. Adults: Serious infections: 600mg-1.2g/day in two, three or four equal doses. More severe infections: 1.2-2.7g/day in two, three or four equal doses. Single I.M. injections of greater than 600mg are not recommended nor is administration of more than 1.2g in a single one-hour infusion. For more serious infections, these doses may have to be increased. In life-threatening situations, doses as high as 4.8g daily have been given intravenously to adults. Alternatively, the drug may be administered in the form of a single rapid infusion of the first dose followed by continuous I.V. infusion. Children (over 1 month of age): Serious infections: 15-25mg/kg/day in three or four equal doses. More severe infections: 25-40mg/kg/day in three or four equal doses. In severe infections it is recommended that children be given no less than 300mg/day regardless of body weight. Elderly patients: The half-life, volume of distribution and clearance, and extent of absorption after administration of clindamycin phosphate are not altered by increased age. Analysis of data from clinical studies has not revealed any age-related increase in toxicity. Dosage requirements

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in elderly patients should not be influenced, therefore, by age alone. See Precautions for other factors which should be taken into consideration. Treatment for infections caused by beta-haemolytic streptococci should be continued for at least 10 days to guard against subsequent rheumatic fever or glomerulonephritis. The concentration of clindamycin in diluent for infusion should not exceed 18mg per ml and INFUSION RATES SHOULD NOT EXCEED 30MG PER MINUTE. The usual infusion rates are as follows: Dose 300mg 600mg 900mg 1200mg

Diluent 50ml 50ml 50-100ml 100ml

Time 10 min 20 min 30 min 40 min

STORAGE AND DISPOSAL OF CLINDAMYCIN 150MG/ML SOLUTION FOR INJECTION OR INFUSION Unopened product: Do not store above 25C. Keep ampoules in outer carton. Injection: The product should be used immediately after opening. Dispose of any remaining solution after a single use. Infusion: Shelf life Unopened: 2 years After dilution: 24 hours Specific text for preparations for Infusion or Injection Chemical and physical in-use stability has been demonstrated for 24 hours at 25oC. From a microbiological point of view, the product should be used immediately. If not used immediately, in-use storage times and conditions prior to use are the responsibility of the user and would normally be no longer than 24 hours at 2 to 8oC, unless reconstitution/dilution (etc) has taken place in controlled and validated aseptic conditions. The reconstitution/dilution should be made under aseptic conditions. The solution should be inspected visually for particulate matter and discoloration prior to administration. The solution should only be used if the solution is clear and free from particles. Special precautions for disposal and other handling Any unused product or waste material should be disposed of in accordance with local requirements. Solution for injection is for single use only. Any unused product should be discarded. Each ml of solution contains 6.57mg (0.286mMol) of sodium, prior to dilution. Clindamycin 150mg/ml Solution for Injection or Infusion has been shown to be physically and chemically compatible for at least 24 hours in dextrose 5% water and sodium chloride injection

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solutions containing the following antibiotics in usually administered concentrations: Amikacin sulphate, aztreonam, cefoxitin sodium, ceftazidime sodium, ceftizoxime sodium, gentamicin sulphate, piperacillin and tobramycin. The compatibility and duration of stability of drug admixtures will vary depending upon concentration and other conditions.

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Frequently asked questions about Clindamycin 150mg/ml Solution for Injection or Infusion

How do I take Clindamycin 150mg/ml Solution for Injection or Infusion?

Clindamycin 150mg/ml Solution for Injection or Infusion comes as injection containing 150mg/ml. Always follow the dose your doctor or pharmacist has given you, and read the leaflet that comes with the medicine.

What is the active substance in Clindamycin 150mg/ml Solution for Injection or Infusion?

The active substance in Clindamycin 150mg/ml Solution for Injection or Infusion is clindamycin phosphate.

Are there equivalent medicines to Clindamycin 150mg/ml Solution for Injection or Infusion?

Medicines with the same active substance, strength and form include: Clindamycin 150 mg/ml Solution for Injection, Clindamycin 150 mg/ml solution for injection/infusion. They are interchangeable only if your prescriber or pharmacist says so.

Where does this information come from?

This leaflet reproduces the patient information leaflet approved for Clindamycin 150mg/ml Solution for Injection or Infusion, as published on the electronic medicines compendium (emc). The version printed inside your medicine’s packaging is the one that applies to you.

Can I get Clindamycin 150mg/ml Solution for Injection or Infusion without a prescription?

Whether a medicine is available over the counter or on prescription only depends on its licence. Check the leaflet, or ask your pharmacist — they can tell you straight away.

About this leaflet

The text above reproduces the patient information leaflet approved for this medicine, restructured for easier reading.

Medical disclaimer: This page is for information only and does not replace advice from your doctor or pharmacist. Always read the leaflet supplied with your medicine. If you are unwell, call NHS 111; in an emergency, call 999.

Medicines with the same active substance: Clindamycin phosphate (17 medicines)
See every medicine containing this substance, or browse the full A–Z of active substances.
⚕For healthcare professionals — Summary of Product Characteristics (SmPC)Full SmPC: dosage, interactions, contraindications, warnings+
Technical information intended for healthcare professionals (doctors and pharmacists). The Summary of Product Characteristics (SmPC) is the official document approved by the MHRA/EMA. It does not replace the patient leaflet or a doctor’s advice.

4.1. Therapeutic indications

Antibacterial. Serious infections caused by susceptible Gram-positive organisms, staphylococci (both penicillinase- and non-penicillinase-producing), streptococci (except Streptococcus faecalis) and pneumococci. It is also indicated for the treatment of severe infections caused by susceptible anaerobic pathogens such as Bacteroides spp, Fusobacterium spp, Propionibacterium spp, Peptostreptococcus spp. and microaerophilic streptococci. Consideration should be given to official guidance on the appropriate use of antibacterial agents.

Clindamycin does not penetrate the blood/brain barrier in therapeutically effective quantities.

4.2. Posology and method of administration

Parenteral (IM or IV administration) - 'see Method of administration' below.

Posology

Adults:

Serious infections: 600mg-1.2g/day in two, three or four equal doses.

More severe infections: 1.2-2.7g/day in two, three or four equal doses.

Single I.M. injections of greater than 600mg are not recommended nor is administration of more than 1.2g in a single one-hour infusion.

For more serious infections, these doses may have to be increased. In life-threatening situations, doses as high as 4.8g daily have been given intravenously to adults.

Alternatively, the drug may be administered in the form of a single rapid infusion of the first dose followed by continuous IV infusion.

Treatment for infections caused by beta-haemolytic streptococci should be continued for at least 10 days to guard against subsequent rheumatic fever or glomerulonephritis.

Elderly: The half-life, volume of distribution and clearance, and extent of absorption after administration of clindamycin phosphate are not altered by increased age. Analysis of data from clinical studies has not revealed any age-related increase in toxicity. Dosage requirements in elderly patients should not be influenced, therefore, by age alone. See Precautions for other factors which should be taken into consideration.

Paediatric population (over 1 month of age):

Serious infections: 15-25mg/kg/day in three or four equal doses.

More severe infections: 25-40mg/kg/day in three or four equal doses. In severe infections it is recommended that children be given no less than 300mg/day regardless of body weight.

Method of administration

Parenteral (IM or IV administration).

Clindamycin 150mg/ml Solution for Injection and Infusion should be used undiluted for IM administration.

Clindamycin 150mg/ml Solution for Injection and Infusion must be diluted prior to I.V. administration and should be infused over at least 10-60 minutes.

Dilution for IV use and IV infusion rates

The concentration of clindamycin in diluent for infusion should not exceed 18mg per ml and INFUSION RATES SHOULD NOT EXCEED 30MG PER MINUTE. The usual infusion rates are as follows:

Dose

Diluent

Time

300mg

600mg

900mg

1200mg

50ml

50ml

50-100ml

100ml

10 min

20 min

30 min

40 min

4.3. Contraindications

Hypersensitivity to the active substance or to any of the excipients listed in section 6.1.

Clindamycin 150mg/ml Solution for Injection and Infusion is contra-indicated in patients previously found to be sensitive to lincomycin

4.4. Special warnings and precautions for use

Warnings

Severe hypersensitivity reactions, including severe skin reactions such as drug reaction with eosinophilia and systemic symptoms (DRESS), Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and acute generalized exanthematous pustulosis (AGEP) have been reported in patients receiving clindamycin therapy. If a hypersensitivity or severe skin reaction occurs, clindamycin should be discontinued and appropriate therapy should be initiated (see sections 4.3 and 4.8).

Clindamycin 150mg/ml Solution for Injection and Infusion should only be used in the treatment of serious infections. In considering the use of the product, the practitioner should bear in mind the type of infection and the potential hazard of the diarrhoea which may develop, since cases of colitis have been reported during, or even two or three weeks following, the administration of clindamycin.

Treatment with antibacterial agents alters the normal flora of the colon leading to overgrowth of Clostridium difficile. This has been reported with use of nearly all antibacterial agents, including clindamycin. Clostridium difficile produces toxins A and B which contribute to the development of Clostridium difficile associated diarrhoea (CDAD) and is a primary cause of 'antibiotic-associated colitis'. The disease is likely to follow a more severe course in older patients or patients who are debilitated. Diagnosis is usually made by the recognition of the clinical symptoms, but can be substantiated by endoscopic demonstration of pseudomembranous colitis. Colitis is a disease, which has a clinical spectrum from mild, watery diarrhoea to severe, persistent diarrhoea, leucocytosis, fever, severe abdominal cramps, which may be associated with the passage of blood and mucus. If allowed to progress, it may produce peritonitis, shock and toxic megacolon. This may be fatal. The presence of the disease may be further confirmed by culture of the stool for C. difficile on selective media and assay of the stool specimen for the toxin(s) of C. difficile.

It is important to consider the diagnosis of CDAD in patients who present with diarrhoea subsequent to the administration of antibacterial agents. This may progress to colitis, including pseudomembranous colitis (see section 4.8), which may range from mild to fatal colitis. If antibiotic-associated diarrhoea or antibiotic-associated colitis is suspected or confirmed, ongoing treatment with antibacterial agents, including clindamycin, should be discontinued and adequate therapeutic measures should be initiated immediately. When 125 mg to 500 mg of vancomycin are administered orally four times a day for 7 - 10 days, there is a rapid observed disappearance of the toxin from faecal samples and a coincident clinical recovery from the diarrhoea. Drugs inhibiting peristalsis are contraindicated in this situation.

Hypertoxin producing strains of C. difficile cause increased morbidity and mortality, as these infections can be refractory to antimicrobial therapy and may require colectomy. CDAD must be considered in all patients who present with diarrhoea following antibiotic use. Careful medical history is necessary since CDAD has been reported to occur over two months after the administration of antibacterial agents.

Precautions

Caution should be used when prescribing Clindamycin 150mg/ml Solution for Injection and Infusion to individuals with a history of gastro-intestinal disease, especially colitis.

Since Clindamycin 150mg/ml Solution for Injection and Infusion does not diffuse adequately into cerebrospinal fluid, the drug should not be used in the treatment of meningitis.

If therapy is prolonged, liver and kidney function tests should be performed. Acute kidney injury, including acute renal failure, has been reported infrequently. In patients suffering from pre-existing renal dysfunction or taking concomitant nephrotoxic drugs, monitoring of renal function should be considered (see section 4.8). Such monitoring is also recommended in neonates and infants. Safety and appropriate dosage in infants less than one month old have not been established.

The use of Clindamycin 150mg/ml Solution for Injection and Infusion may result in the overgrowth of non-susceptible organisms particularly yeasts.

Prolonged administration of Clindamycin 150mg/ml Solution for Injection and Infusion, as with any anti-infective, may result in super-infection due to organisms resistant to clindamycin.

Care should be observed in the use of Clindamycin 150mg/ml Solution for Injection and Infusion in atopic individuals.

Clindamycin phosphate should not be injected intravenously undiluted as a bolus, but should be infused over at least 10-60 minutes as directed in section 4.2.

This medicine contains less than 1 mmol sodium (23 mg) per 2 ml ampoule, that is to say essentially 'sodium-free'.

This medicinal product contains 26 mg sodium per 4 ml ampoule, equivalent to 1.3% of the WHO recommended maximum daily intake of 2 g sodium for an adult.”

4.5. Interaction with other medicinal products and other forms of interaction

Clindamycin administered by injection has been shown to have neuromuscular blocking properties that may enhance the action of other neuromuscular blocking agents. It should be used with caution, therefore, in patients receiving such agents.

Vitamin K antagonists

Increased coagulation tests (PT/INR) and/or bleeding have been reported in patients treated with clindamycin in combination with a vitamin K antagonist (e.g. warfarin, acenocoumarol and fluindione). Coagulation tests, therefore, should be frequently monitored in patients treated with vitamin K antagonists. \

Co-administration of clindamycin with inhibitors of CYP3A4 and CYP3A5

Clindamycin is metabolized predominantly by CYP3A4, and to a lesser extent by CYP3A5, to the major metabolite clindamycin sulfoxide and minor metabolite N desmethylclindamycin. Therefore inhibitors of CYP3A4 and CYP3A5 may reduce clindamycin clearance and inducers of these isoenzymes may increase clindamycin clearance. In the presence of strong CYP3A4 inducers such as rifampicin, monitor for loss of effectiveness.

In vitro studies indicate that clindamycin does not inhibit CYP1A2, CYP2C9, CYP2C19, CYP2E1 or CYP2D6 and only moderately inhibits CYP3A4. Therefore, clinically important interactions between clindamycin and co-administered drugs metabolized by these CYP enzymes are unlikely.

4.6. Fertility, pregnancy and lactation

Pregnancy

There was evidence of maternal toxicity and embryofetal toxicity in animal studies (see section 5.3).

Clindamycin crosses the placenta in humans. After multiple doses, amniotic fluid concentrations were approximately 30% of maternal blood concentrations.

In clinical trials with pregnant women, the systemic administration of clindamycin during the second and third trimesters has not been associated with an increased frequency of congenital abnormalities. There are no adequate and well-controlled studies in pregnant women during the first trimester of pregnancy.

Clindamycin should be used in pregnancy only if clearly needed.

Breast-feeding

Orally and parenterally administered clindamycin has been reported to appear in human breast milk in ranges from < 0.5 to 3.8 μg/ml. Clindamycin has the potential to cause adverse effects on the breastfed infant's gastrointestinal flora such as diarrhoea or blood in the stool, or rash. If oral or intravenous clindamycin is required by a nursing mother, it is not a reason to discontinue breastfeeding, but an alternate drug may be preferred. The developmental and health benefits of breastfeeding should be considered along with the mother's clinical need for clindamycin and any potential adverse effects on the breastfed child from clindamycin or from the underlying maternal condition.

Fertility

Fertility studies in rats treated orally with clindamycin revealed no effects on fertility or mating ability.

4.7. Effects on ability to drive and use machines

Clindamycin has no or negligible influence on the ability to drive and use machines.

4.8. Undesirable effects

The table below lists the adverse reactions identified through clinical trial experience and post-marketing surveillance by system organ class and frequency. The frequency of undesirable effects listed below is defined using the following convention:

Very common (≥1/10), Common (≥1/100 to <1/10), Uncommon (≥1/1,000 to <1/100), Rare (≥1/10,000 to <1/1,000), Very rare (<1/10,000), Not known (cannot be estimated from the available data). Within each frequency grouping, undesirable effects are presented in order of decreasing seriousness.

System organ class

Frequency

Undesirable effects

Infections and infestations

Common

pseudomembranous colitis*#

Not Known

vaginal infection *

Blood and lymphatic system disorders

Not Known

agranulocytosis*, neutropenia*, thrombocytopenia*, leukopenia*, eosinophilia

Immune system disorders

Not Known

anaphylactic shock*, anaphylactoid reactions*, anaphylactic reaction*, hypersensitivity*

Nervous system disorders

Uncommon

dysgeusia

Cardiac disorders

Uncommon

cardio- respiratory arrest†§

Vascular disorders

Common

thrombophlebitis†

Uncommon

hypotension†§

Gastrointestinal disorders

Uncommon

diarrhoea, nausea,

Not Known

Oesophageal ulcers, oesophagitis, , vomiting, abdominal pain

Hepatobiliary disorders

Not Known

Jaundice*

Skin and subcutaneous tissue disorders

Common

rash maculopapular

Uncommon

urticaria erythema multiforme, pruritus

Not Known

toxic epidermal necrolysis (TEN)*, Stevens-Johnson syndrome (SJS)*, drug reaction with eosinophilia and systemic symptom (DRESS)*, acute generalised exanthematous pustulosis (AGEP)*, dermatitis exfoliative*, dermatitis bullous*, rash morbilliform*,

Renal and urinary disorders

Not known

Acute kidney injury#

General disorders and administration site conditions

Uncommon

pain†, injection site abscess†

Not Known

injection site irritation†*

Investigations

Common

liver function test abnormal

* ADR identified post-marketing.

† ADRs apply only to injectable formulations.

# See section 4.4.

§ Rare instances have been reported following too rapid intravenous administration (see section 4.2)

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.

4.9. Overdose

Management:

In cases of overdosage no specific treatment is indicated.

The serum biological half-life of Clindamycin is 2.4 hours. Clindamycin cannot readily be removed from the blood by dialysis or peritoneal dialysis.

If an allergic adverse reaction occurs, therapy should be with the usual emergency treatments, including corticosteroids, adrenaline and antihistamines.

💬 Ask about this leaflet

Ask anything about Clindamycin 150mg/ml Solution for Injection or Infusion. The assistant answers only from this leaflet — if the leaflet does not cover it, it will say so. It does not give medical advice.

Answers come from the patient leaflet published on the electronic medicines compendium (emc). They are not medical advice. Ask a pharmacist or your GP if you are unsure. For urgent help call NHS 111, or 999 in an emergency.

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