February 27, 2017
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Tagamet

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Tagamet




Tagamet Side Effects Center

Medical Editor: John P. Cunha, DO, FACOEP

Last reviewed on RxList 9/21/2016

Tagamet (cimetidine) is a histamine receptor antagonist used to treat and prevent certain types of ulcer, and to treat conditions that cause the stomach to produce too much acid. Tagamet is also used to treat gastroesophageal reflux disease (GERD), when stomach acid backs up into the esophagus and causes heartburn. Tagamet is available in generic form. Common side effects of Tagamet include:

  • headache,
  • dizziness,
  • drowsiness,
  • depression,
  • agitation,
  • breast swelling or tenderness (in men),
  • joint or muscle pain,
  • skin rash,
  • diarrhea,
  • nausea, or
  • constipation.

Tell your doctor if you experience unlikely but serious side effects of Tagamet including:

  • mental/mood changes (e.g., confusion, hallucinations),
  • trouble urinating, or
  • decreased sexual ability (with very high doses).

Dose of Tagamet depends on the condition being treated and the patient's response to the medication. Tagamet may interact with blood thinners, clopidogrel, phenytoin, nifedipine, metronidazole, propranolol, chlordiazepoxide, lidocaine, diazepam, theophylline, depression or anxiety medications. Tell your doctor all medications you use. Tagamet should be used only when prescribed during pregnancy. This medication passes into breast milk. Consult your doctor before breastfeeding.

Our Tagamet (cimetidine) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is Patient Information in Detail?

Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.

Tagamet in Detail - Patient Information: Side Effects

Stop using cimetidine and get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have any of these serious side effects:

  • cough, fever, chest congestion, trouble breathing;
  • red or blistering skin rash;
  • jaundice (yellowing of the skin or eyes);
  • easy bruising or bleeding, unusual weakness;
  • feeling faint, light-headed, disoriented, or confused;
  • urinating less than usual;
  • irregular heartbeat; or
  • a rash.

Less serious side effects may include:

  • feeling dizzy, depressed, or agitated;
  • breast swelling or tenderness (in men);
  • joint or muscle pain;
  • mild skin rash;
  • headache; or
  • diarrhea, nausea, or constipation.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Tagamet (Cimetidine)

What is Patient Information Overview?

A concise overview of the drug for the patient or caregiver from First DataBank.

Tagamet Overview - Patient Information: Side Effects

SIDE EFFECTS: Headache, dizziness, drowsiness, or diarrhea may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

If your doctor has directed you to use this medication, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these unlikely but serious side effects occur: mental/mood changes (e.g., agitation, confusion, depression, hallucinations), trouble urinating, muscle/joint pain, breast swelling/soreness in males, decreased sexual ability (with very high doses of this medication).

Tell your doctor immediately if any of these rare but very serious side effects occur: easy bruising/bleeding, signs of infection (e.g., fever, persistent sore throat, cough, trouble breathing), fast/slow/irregular heartbeat, unusual tiredness, persistent nausea/vomiting, severe stomach/abdominal pain, dark urine, yellowing eyes/skin, change in the amount of urine.

A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Read the entire patient information overview for Tagamet (Cimetidine)

What is Prescribing information?

The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.

Tagamet FDA Prescribing Information: Side Effects
(Adverse Reactions)

SIDE EFFECTS

No information required

Read the entire FDA prescribing information for Tagamet (Cimetidine)

Tagamet - User Reviews

Tagamet User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Tagamet sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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