Any medicine can cause some sort of side-effect, even those bought in a supermarket. Some people will have a side-effect with any medicine, where another person will not have any issues with any of them. You are more likely to get side-effects if you do not take the medicine correctly.
If you do experience a side-effect, it will usually not be serious and tends to disappear after taking the medicine a little while. If you are unsure you should speak to a pharmacist.
Most patient information leaflets now list the known side effects, and class them as:
- very common (more than 1 in 10 people are affected)
- common (between 1 in 10 and 1 in 100 people are affected)
- uncommon (between 1 in 100 and 1 in 1,000 people are affected)
- rare (between 1 in 1,000 and 1 in 10,000 people are affected)
- very rare (fewer than 1 in 10,000 people are affected)
You should tell your pharmacist or your doctor if you think you are affected by any of them – especially if it is one that is considered rare or very rare.