Generic name: Cimetidine Tablets [ sye-MET-i-deen ]
Drug class: H2 antagonists
Medically reviewed by Drugs.com. Last updated on Jul 26, 2022.
Uses of Cimetidine Tablets:
- It is used to treat or prevent GI (gastrointestinal) ulcers.
- It is used to treat gastroesophageal reflux disease (GERD; acid reflux).
- It is used to treat heartburn and sour stomach.
- It is used to treat syndromes caused by lots of stomach acid.
- It may be given to you for other reasons. Talk with the doctor.
What do I need to tell my doctor BEFORE I take Cimetidine Tablets?
- If you have an allergy to cimetidine or any other part of this medicine (cimetidine tablets).
- If you are allergic to this medicine (cimetidine tablets); any part of this medicine (cimetidine tablets); or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
- If you are taking dofetilide.
This is not a list of all drugs or health problems that interact with this medicine (cimetidine tablets).
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this medicine (cimetidine tablets) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
What are some things I need to know or do while I take Cimetidine Tablets?
- Tell all of your health care providers that you take this medicine (cimetidine tablets). This includes your doctors, nurses, pharmacists, and dentists.
- Call your doctor if you have throat pain, chest pain, very bad belly pain, trouble swallowing, or signs of a bleeding ulcer like black, tarry, or bloody stools, throwing up blood, or throw up that looks like coffee grounds. These may be signs of a worse health problem.
- Some other drugs may need to be taken at some other time than this medicine (cimetidine tablets). If you take other drugs, check with your doctor or pharmacist to see if you need to take them at some other time than this medicine (cimetidine tablets).
- If you are 50 or older, use this medicine (cimetidine tablets) with care. Talk with your doctor.
- Tell your doctor if you are pregnant, plan on getting pregnant, or are breast-feeding. You will need to talk about the benefits and risks to you and the baby.
How is this medicine (Cimetidine Tablets) best taken?
Use this medicine (cimetidine tablets) as ordered by your doctor. Read all information given to you. Follow all instructions closely.
- Take this medicine (cimetidine tablets) with meals and at bedtime or as you have been told by your doctor.
- Do not take antacids at the same time as this medicine (cimetidine tablets). Talk with your doctor.
- To prevent heartburn take this medicine (cimetidine tablets) 30 minutes before eating foods or drinking liquids that cause heartburn.
What do I do if I miss a dose?
- If you take this medicine (cimetidine tablets) on a regular basis, take a missed dose as soon as you think about it.
- If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
- Many times this medicine (cimetidine tablets) is taken on an as needed basis. Do not take more often than told by the doctor.
What are some side effects that I need to call my doctor about right away?
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Feeling confused.
- Feeling agitated.
- Mood changes.
- Hallucinations (seeing or hearing things that are not there).
- Enlarged breasts.
- Liver problems have rarely happened with this medicine (cimetidine tablets). Sometimes, this has been deadly. Call your doctor right away if you have signs of liver problems like dark urine, feeling tired, not hungry, upset stomach or stomach pain, light-colored stools, throwing up, or yellow skin or eyes.
What are some other side effects of Cimetidine Tablets?
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if you have any side effects that bother you or do not go away.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.
If OVERDOSE is suspected:
If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
How do I store and/or throw out Cimetidine Tablets?
- Store at room temperature.
- Store in a dry place. Do not store in a bathroom.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
Consumer information use
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else's drugs.
- Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about this medicine (cimetidine tablets), please talk with your doctor, nurse, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
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