9. Will it cause problems with other medicines?

Because of their chemical nature medicines can and will react with each other and sometimes cause interaction problems. Some interaction problems are so serious that some medicines must never be taken together.

Medicine interactions may reduce or increase the action of one or other of the interacting medicines and cause serious problems from mild to life threatening.

The area of medicine interactions is very technical and complex, however, pharmacists are able to check on behalf of patients and see if there are any interaction problems likely with their medicines and advise accordingly.

Warning: If you start taking a new medicineand get a sudden unexpected change in your health, behaviour or your symptoms get worse contact your pharmacist or doctor immediately. It may be a serious interaction problem.

To help reduce medicine interaction problems:

  • Always go to the same pharmacy, they will keep a list of all the medicines you take.
  • When you get a new medicine ask if your pharmacist has checked to see if it is safe to take with your other medicines.
  • Make sure your doctor knows about all the medicines and supplements you take.
  • Periodically have your pharmacist check your medicines, supplements and herbal remedies for interactions problems.

More information: med+info leaflets section 3 “Some medicines may cause problems”

All med+info leaflets list in section 3 medicine that must not be taken together (if applicable) and medicine that may cause interaction problems.