My mother's Parkinson's doctor has recently prescribed a drug named Cogentin (or Benzotropin Mesylate) (spelling may be wrong) to go along with the sinemet she is taking. Apparently the Cogentin is to ease tremors and rigidity. What can someone tell me about the drug? Is it one of the agonist class? What type of side effects are typically felt? Is nausea a problem with it for many? Thanks. Bryce Jones