Pharmacy Guide
Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.
Pharmacy Guide
Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.
Crystacide 1% w/w Cream 40g
⚠ 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 Hydrogen peroxide may still be available. Do not stop your treatment — ask your pharmacist or GP what to use instead.
What it is and what it is used for
FOR Crystacide is used for the treatment of superficial skin infections caused by organisms sensitive to hydrogen peroxide, which is a potent medicine that is active against many types of bacteria, and some fungi and viruses. It acts by destroying the cells of these organisms. 2. BEFORE YOU USE CRYSTACIDE CREAM 1% Do not use Crystacide Cream 1%:
- If you know you are sensitive or allergic to any of the ingredients (see section 6). Make sure your doctor or pharmacist knows if this affects you. Take special care with Crystacide Cream 1%: Crystacide should not be used on large or deep wounds and should not be applied to healthy skin. Take care to avoid contact with the eyes. If Crystacide should accidentally get into your eyes, wash it out immediately with plenty of cold water. Hydrogen peroxide, the active substance in your cream, can bleach fabrics. Taking or using other medicines Crystacide should not be used in the presence of iodine, permanganate and other strong oxidising agents. Please tell your doctor or pharmacist if you are using or have recently used any other medicines, including medicines obtained without a prescription. Pregnancy and breast-feeding Ask your doctor or pharmacist for advice before using this, or any other medicine when you are pregnant, think you may be pregnant, are planning to become pregnant, or are breast-feeding. Driving and using machines Crystacide should not affect your ability to drive or use machinery. Important information about some of the ingredients of Crystacide Cream Salicylic acid may cause allergic dermatitis which is an itchy red rash. Another ingredient in your cream, propylene glycol, may also cause skin irritation.
How to take it
CRYSTACIDE CREAM 1% Follow the instructions of your doctor or pharmacist. Always check the label for directions on how to use your medicine. Your pharmacist will help if you are not sure. Crystacide is for external use only. It is usually applied 2-3 times a day, or when needed, to the affected areas. If a waterproof plaster is used, one application a day may be sufficient. A dry film may appear on the skin after application; this can easily be washed off with water. Do not use continuously for more than 3 weeks. What to do if you accidentally swallow Crystacide Cream 1% If you accidentally swallow the cream, contact your doctor or local hospital. If you forget to use Crystacide Cream 1% If you forget to apply a dose, do so as soon as you remember and then go on as before. If you have any further questions on the use of this product ask your doctor of pharmacist.
Possible side effects
Like all medicines Crystacide Cream 1% can sometimes cause side effects, although not everybody has them. Crystacide is generally well tolerated however, and not associated with any serious side effects. The following side effects have been reported but how often they occur is not known:
- You may notice a mild burning feeling for a short time after application. If you feel that your skin remains irritated for a long time or you notice any other side effects not listed in this leaflet, please tell your doctor or pharmacist and ask if you should continue with your medication. 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 at www.mhra.gov.uk/yellowcard. By reporting side effects you can help provide more information on the safety of this medicine.
How to store it
CRYSTACIDE CREAM 1% Keep out of the reach and sight of children. Your medicine could harm them. Once you have opened the tube, do not keep it for more than 28 days. Do not use any medicine after the expiry date stated on the packaging. Keep your medicine at room temperature below 25oC, in a dry place. Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help to protect the environment. 6. FURTHER INFORMATION The active ingredient is hydrogen peroxide in a concentration of 1% w/w. The other ingredients are glyceryl monolaurate, glyceryl monomyristate, Macrogol stearate 5000, propylene glycol, anhydrous citric acid, sodium hydroxide, sulphuric acid, sodium oxalate, salicylic acid, disodium edetate, sodium pyrophosphate, sodium stannate and purified water. What Crystacide Cream 1% looks like and contents of pack Crystacide 1% w/w Cream is a smooth pearly white cream. Crystacide cream may be available in tubes of 5g, 10g, 25g and 40g. Marketing authorization holder Reig Jofre UK Ltd, Follaton House, Plymouth Road, Totnes, Devon, TQ9 5NE, UK Manufacturer Bioglan AB, PO Box 50310, S-202 13 Malmö, Sweden. This leaflet was last revised in January 2025 911041 Printed in Sweden BERGSTENS, HBG 190305
Frequently asked questions about Crystacide 1% w/w Cream 40g
How do I take Crystacide 1% w/w Cream 40g?
Crystacide 1% w/w Cream 40g comes as cream containing 40g. 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 Crystacide 1% w/w Cream 40g?
The active substance in Crystacide 1% w/w Cream 40g is hydrogen peroxide.
Where does this information come from?
This leaflet reproduces the patient information leaflet approved for Crystacide 1% w/w Cream 40g, 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 Crystacide 1% w/w Cream 40g 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.
- Source: electronic medicines compendium (emc), Datapharm
- Active substance: hydrogen peroxide
- Official document: view the original leaflet on emc →
⚕For healthcare professionals — Summary of Product Characteristics (SmPC)Full SmPC: dosage, interactions, contraindications, warnings+
4.1. Therapeutic indications
Crystacide cream is intended for topical application for the treatment of primary and secondary superficial skin infections caused by organisms sensitive to hydrogen peroxide.
4.2. Posology and method of administration
Adults, elderly and children
Crystacide cream is applied 2-3 times daily on the infected skin area. The treatment period should not exceed 3 weeks. A dry film will appear on the skin after application, this can be washed off with water.
4.3. Contraindications
Hypersensitivity to the active substance or any of the excipients.
4.4. Special warnings and precautions for use
Contact with the eyes should be avoided. Crystacide Cream should not be used on large or deep wounds and should not be applied to healthy skin. Hydrogen peroxide can bleach fabric.
Salicylic acid is a mild irritant and can cause dermatitis.
Crystacide Cream also contains propylene glycol which may cause skin irritation.
4.5. Interaction with other medicinal products and other forms of interaction
Crystacide cream is incompatible with iodine, permanganates and other stronger oxidising agents.
4.6. Pregnancy and lactation
To be used under medical guidance.
4.7. Effects on ability to drive and use machines
Not applicable.
4.8. Undesirable effects
A mild sensation of burning may be experienced for a short time after application.
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 at www.mhra.gov.uk/yellowcard. By reporting side effects you can help provide more information on the safety of this medicine.
4.9. Overdose
Not applicable
🇵🇱 Known in Poland as
Medicines sold in Poland with the same active substance: W Polsce znany jako
⚠ Same active substance, but a different pharmaceutical form (for example a gel instead of a tablet). Not interchangeable — ask a pharmacist.
- Peroxygel 3,0Hydrogenii peroxidum
- Woda utlenionaHydrogenii peroxidum 3%
- Wodoru nadtlenek 3% "Laboratorium Galenowe Olsztyn"Hydrogenii peroxidum · taken by mouth
- Woda utleniona ProlabHydrogenii peroxidum · taken by mouth
- Woda utleniona GemiHydrogenii peroxidum · taken by mouth
- Wodoru nadtlenek 3%Hydrogenii peroxidum · taken by mouth
Same active substance. The strength, the form and whether you need a prescription can differ. Always ask a pharmacist before you switch. Polish medicines in the UK →
💬 Ask about this leaflet
Ask anything about Crystacide 1% w/w Cream 40g. 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.