CLINICAL PHARMACOLOGY. id: B1533281-C318-28BF-F844-23F7C13A2425 displayName: CLINICAL PHARMACOLOGY SECTION FDA Article Code: 34090-1. Ranitidine is a competitive, reversible inhibitor of the action of histamine at the histamine H 2-receptors, including receptors on the gastric cells. Learn about Spiriva (Tiotropium Bromide) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related medications. Other Anticholinergic Drugs (with lesser AC effect) Here are some other anticholinergic drugs to watch out for but they have fewer effects on the brain. The Beers between use of drugs on the Beers list and ]-. 4 to 8 mg/kg/day PO divided 2 to 3 times per day has been studied. Gastric pH was monitored over 24 hours after administration of varying doses of ranitidine in preterm and term neonates (n = 25, postnatal age 7 days to 8 months). It appears that basal-, nocturnal-, and betazole-stimulated secretions are most sensitive to inhibition by ranitidine, responding almost completely to doses of 100 mg or less, while pentagastrin- and food-stimulated secretions are more difficult to suppress. It appears that basal-, nocturnal-, and betazole-stimulated secretions are most sensitive to inhibition by Ranitidine Oral Solution, responding almost completely to doses of 100 mg or less, while pentagastrin- and food-stimulated secretions are more difficult to suppress. Psychotropic side effects of commonly prescribed medications in the elderly are prevalent and, in most instances, predictable and preventable. Medical uses. Benzatropine is an anticholinergic drug used in patients to reduce extrapyramidal side effects of antipsychotic treatment. Benzatropine is also a second-line drug for the treatment of Parkinson's disease. Table 2: Drugs That Can Cause Ataxia. Anticonvulsants (e.g., phenytoin, carbamazepine) Antihypertensives and drugs with hypotension as side effects.