Drug interactions between Gesticare DHA and Tagamet
| Results for the following 2 drugs: |
|---|
| Gesticare DHA (multivitamin, prenatal) |
| Tagamet (cimetidine) |
Interactions between your selected drugs
cimetidine ↔ multivitamin, prenatal
Applies to:Tagamet (cimetidine) and Gesticare DHA (multivitamin, prenatal)
Limited data have suggested that concurrent administration of cimetidine may reduce the bioavailability of orally administered iron. In one study, dose-related reductions in the absorption of iron occurred following single oral doses of cimetidine (300 mg to 900 mg) compared to baseline. There has also been a case report of persistent inadequate response to iron therapy for the treatment of anemia during concomitant use of cimetidine 1 gm and ferrous sulfate 600 mg daily. Hematologic improvement was noted within a month after reducing the cimetidine dosage to 400 mg daily. Some investigators have suggested that cimetidine-induced increases in gastric pH may reduce the solubility of iron salts, which leads to decreased absorption. However, a study in patients with iron deficiency or iron-deficiency anemia found that response to iron therapy (iron succinyl-protein complex 2400 mg twice daily) was not affected by H2-receptor antagonists such as famotidine, nizatidine, or ranitidine. In another study, stable serum iron concentrations were observed in 64 patients receiving chronic therapy with cimetidine 400 mg to 800 mg/day. Based on existing evidence, no intervention (e.g., separating times of administration) appears to be necessary during concomitant use of cimetidine and iron products unless an interaction is suspected.
See also...
Drug Interaction Classification
The classifications below are a guideline only. The relevance of a particular drug interaction to a specific patient is difficult to determine using this tool alone given the large number of variables that may apply.
| Major | Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. |
| Moderate | Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. |
| Minor | Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. |
Do not stop taking any medications without consulting your healthcare provider.
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