Preparation H clear gel contains hamamelis water, more commonly known as witch hazel. Hamamelis acts as an astringent. Astringents are commonly used in haemorrhoid preparations as they cause the cells they are in contact with to shrink and dry out. This causes shrinkage of the haemorrhoid, thereby relieving the associated pain and discomfort.
Haemorrhoids occur when veins in the wall of the rectum become swollen and irritated. They may cause itching, irritation and pain on passing stools. This preparation is used to relieve these swollen tissues and to act as a lubricant to ease painful bowel movements when the skin is dry and sore.
This medicine should not be used if you are allergic to any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy.
If you feel you have experienced an allergic reaction, stop using this medicine and inform your doctor or pharmacist immediately.
Certain medicines should not be used during pregnancy or breastfeeding. However, other medicines may be safely used in pregnancy or breastfeeding providing the benefits to the mother outweigh the risks to the unborn baby. Always inform your doctor if you are pregnant or planning a pregnancy, before using any medicine.
This medicine is not known to affect any other medicines. However, as with all medicines, if you are already taking any other medicines you should always check with your pharmacist before taking this one as well.
There are currently no other haemorrhoid preparations available in the UK that contain witch hazel as the active ingredient.