With simultaneous administration reduces the bioavailability of ranitidine, Cimetidine, roxatidine.
The blocker of histamine receptors Cimetidine is able to increase the concentration of Pentoxifylline in the serum.
For example, Cimetidine, ciprofloxacin, erythromycin,
fluvoxamine, and St John's wort can increase the amount of theophylline in your blood.
If the drug is taken with Cimetidine, the drug helps increase the concentration of xeafocam in the blood.
In combination with Cimetidine metabolism of Velaxin is slightly reduced(more
pronounced in elderly people and patients with hepatic impairment);
Famotidine, Unlike Cimetidine, the first H2 antagonist,
famotidine has no effect on the cytochrome P450 enzyme system, and does not appear to interact with other drugs.
Cimetidine, omeprazole, oxcarbazepine,
ticlopidine, topiramate, ketoconazole, itraconazole, disulfiram, fluvoxamine, isoniazid, erythromycin, probenecid, propranolol, imipramine, ciprofloxacin, fluoxetine, and valproic acid prolong the action of diazepam by inhibiting its elimination.
In case of combining Pefloxacin with antihistamines(ranitidine, Cimetidine), the frequency of antibiotic intake is
increased due to an increase in the time of its circulation in the blood plasma.