Tagamet HB Oral

Tagamet HB Oral 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.

Call your doctor for medical advice about side effects. In the US, you may report side effects to the Food and Drug Administration (FDA) at 1-800-FDA-1088.

In Canada, you may report side effects to Health Canada at 1-866-234-2345.

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Drug Interactions