Important Instructions for Cimetidine
As with any medicine, there are possible side effects. However, not everyone who takes the medication will experience side effects. In fact, most people tolerate it well. When side effects do occur, in most cases they are minor and either require no treatment or can easily be treated by you or your healthcare provider. Serious side effects are less common.
The most common side effects of cimetidine include:
- Breast enlargement in men, known medically as gynecomastia (see Cimetidine and Gynecomastia)
(Click Cimetidine Side Effects to learn about specific side effects of the drug, including some of the more serious side effects that you should report to your healthcare provider. You can also read about other possible side effects by going to Cimetidine and Impotence.)
Cimetidine can potentially interact with several medicines.
(Click Drug Interactions With Cimetidine for more information.)
You should talk with your healthcare provider before taking this medication if you have:
- Kidney problems, such as kidney failure (renal failure)
- Liver problems, such as liver failure or cirrhosis
- Any allergies, including allergies to foods, dyes, or preservatives.
Also, let your healthcare provider know if you:
- Are pregnant or thinking of becoming pregnant (see Cimetidine and Pregnancy)
- Are breastfeeding (Cimetidine and Breastfeeding).
Tell your healthcare provider about all the medicines you currently take, including prescription and non-prescription medicines, vitamins, and herbal supplements.
(Click Precautions and Warnings With Cimetidine for more information on this topic, including information on who should not take the drug.)