Any alternative to Trihexyphenidyl

[the maze runner]

I am prescribed THP for side effects of antipsychotics. But it gives me memory issues. Is there any alternative?

[Banana Smurf]

I can't tolerate it either and have used propranolol and benadryl as alternatives but they were probably weaker.  They didn't work for more extreme movement problems for me.  

[Iceberg]

Cogentin? 

[notloki]

Depending on which side effects and how severe propranolol can be an option. I take 60 mg ER every day which totally stops my hand tremor.