Bryce, I pulled out the drug handbook and came up with the following: Cogentin (benztropine mesylate) action is unknown. Thought to block central cholinergic receptors, helping to balance cholinergic activity in basal ganglia. Onse occurs with 15 minutes of IM use or within 1-2 hours of oral use. Peak is unknown. Effects persist 24 hours. For Parkinsonism dose is 0.5 to 6mg by mouth or IM daily. Initial dose is 0.5mg to 1mg, increased by 0.5mg every 5-6 days. Dosage adjusted for individual requirements. Adverse reactions (side effects) are highlighted as constipation, others seem to be dose related. Do not take with amantadine, phenothiazines, tricyclic antidepressants to avoid confusion and hallucinations. Should be given after meals to prevent gastrointestinal distress.Never discontinue drug abruptly Hope this helps some. Kathy.