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The adverse reactions listed below have been reported during domestic and international clinical trials in approximately 2500 patients. In those controlled clinical trials in which PEPCID Tablets were compared to placebo, the incidence of adverse experiences in the group which received PEPCID Tablets, 40 mg at bedtime, was similar to that in the placebo group.
The following adverse reactions have been reported to occur in more than 1% of patients on therapy with PEPCID in controlled clinical trials, and may be causally related to the drug: headache (4.7%), dizziness (1.3%), constipation (1.2%) and diarrhea (1.7%).
The following other adverse reactions have been reported infrequently in clinical trials or since the drug was marketed. The relationship to therapy with PEPCID has been unclear in many cases. Within each category the adverse reactions are listed in order of decreasing severity:
Cardiovascular: arrhythmia, AV block, palpitation
Musculoskeletal: musculoskeletal pain including muscle cramps, arthralgia
Nervous System/Psychiatric: grand mal seizure; psychic disturbances, which were reversible in cases for which follow-up was obtained, including hallucinations, confusion, agitation, depression, anxiety, decreased libido; paresthesia; insomnia; somnolence. Convulsions, in patients with impaired renal function, have been reported very rarely.
Respiratory: bronchospasm, interstitial pneumonia
Special Senses: tinnitus, taste disorder
The adverse reactions reported for PEPCID Tablets may also occur with PEPCID for Oral Suspension, PEPCID Injection (famotidine injection) Premixed or PEPCID Injection (famotidine injection) . In addition, transient irritation at the injection site has been observed with PEPCID Injection (famotidine injection) .
In a clinical study in 35 pediatric patients < 1 year of age with GERD symptoms [e.g., vomiting (spitting up), irritability (fussing)], agitation was observed in 5 patients on famotidine that resolved when the medication was discontinued.
Read the Pepcid Injection (famotidine injection) Side Effects Center for a complete guide to possible side effects
No drug interactions have been identified. Studies with famotidine in man, in animal models, and in vitro have shown no significant interference with the disposition of compounds metabolized by the hepatic microsomal enzymes, e.g., cytochrome P450 system. Compounds tested in man include warfarin, theophylline, phenytoin, diazepam, aminopyrine and antipyrine. Indocyanine green as an index of hepatic drug extraction has been tested and no significant effects have been found.
Read the Pepcid Injection Drug Interactions Center for a complete guide to possible interactions
Last reviewed on RxList: 11/30/2016
Additional Pepcid Injection Information
- Pepcid Injection Drug Interactions Center: famotidine iv
- Pepcid Injection Side Effects Center
- Pepcid Injection Overview including Precautions
- Pepcid Injection FDA Approved Prescribing Information including Dosage
Pepcid Injection - User Reviews
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