Sign inBefore taking clemastine
Before taking clemastine make sure your doctor or pharmacist knows:
- If you are pregnant, trying for a baby or breast-feeding.
- If you have liver problems.
- If you have glaucoma (increased pressure in your eye).
- If you suffer from epilepsy.
- If you have prostate problems, or have been experiencing difficulty passing urine.
- If you know you have a blockage in your small intestines.
- If you have porphyria (a rare blood disorder).
- If you are taking other medicines, including those available to buy without a prescription, herbal or complementary medicines.
- If you have ever had an allergic reaction to this or to any other medicine.
How to take clemastine
- Before starting this treatment, read the manufacturer's printed information leaflet from inside the pack.
- Clemastine is usually taken twice daily.
- It is not important whether you take clemastine before or after food.
- Try to take clemastine at the same times each day to avoid missing any doses.
- If you forget to take a dose, take it as soon as you remember unless it is nearly time for your next dose, in which case leave out the missed dose. Do not take two doses together to make up for a forgotten dose.
Getting the most from your treatment
- Clemastine may cause drowsiness. Do not drink alcohol while you are taking clemastine as it will increase these feelings of drowsiness.
- If you are having an operation or any dental treatment, tell the person carrying out the treatment that you are taking clemastine.
- If you buy any medicines, check with a pharmacist that they are safe to take with clemastine.
- Clemastine may cause your skin to become more sensitive to sunlight. Use a sunscreen that protects against UVA light and has a sun protection factor (SPF) of at least 15, especially in strong sunlight or until you know how your skin reacts. Do not use sunbeds.
Can clemastine cause problems?
Along with their useful effects, all medicines can cause unwanted side-effects although not everyone experiences them. These usually improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following side-effects continue or become troublesome.
| Possible side-effects | What can I do if I experience this |
| Drowsiness, dizziness, blurred vision | Make sure your reactions are normal before driving, operating machinery or doing any other jobs which could be dangerous if you were not fully alert or able to see properly |
| Headache | Ask your pharmacist to recommend a suitable painkiller. If the headache continues, speak with your doctor |
| Difficulty passing urine | Speak with your doctor if this becomes troublesome |
| Dry mouth | Try chewing sugar-free gum or sweets |
| Stomach upset | Stick to simple foods - avoid rich or spicy foods |
If you experience any other symptoms which you think may be due to this medicine, speak with your doctor or pharmacist.
How to store clemastine
- Keep all medicines out of the reach and sight of children.
- Store in a cool, dry place, away from direct heat and light.
Important information about all medicines
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