its used to treat parkinsons disease. its an antihistamine which arent really fun unless you like a delirous experience. so technically it can give you a buzz, but i wouldnt really reccomend it. from drugs.com: Symptoms of a benztropine overdose may include weakness, confusion, hallucinations, loss of balance, dry mouth, constipation, problems urinating, blurred vision, fast or pounding heartbeat, nausea and vomiting, numbness in your fingers, headache, hot or dry skin, dizziness, or fainting.
You are confusing antihistamines with anticholinergics. Antihistamines don't have recreational value, and don't provide any sort of high. Most drugs, when you "overdose," have all of those same symptoms...that is just like a generic list of overdose symptoms that they list on everything. The delirious high that you get is caused by anticholinergics. Benadryl/Dramamine is considered both, but the actual delirium "high" is caused by the fact that it is an anticholinergic. Benztropine is both as well, so it's basically going to give you the same type of crazy insane feeling as any other anticholinergic like Benadryl/Dramamine/Angel Trumpet, etc. Just wanted to point it out that it's not the antihistamines that have recreational value, it's only if they are considered an anticholinergic as well. I personally wouldn't consider feeling delirious as recreational, but some people like feeling insane. Taking anticholinegics at really high doses can be very dangerous, so be careful if you decide to take this. I couldn't find any information about what the recreational dose would be, so make sure you can find information about that before you go ingesting nasty shit like this. It can turn out very bad. The experience itself isn't considered as a "good" experience, so take that into consideration too.
alright well I've never enjoyed the delerious state your thrown into when you take benadryl so im going to pass.