These drugs were mainly used before levodopa was introduced -
They may help control tremors, slowness and stiffness but their usefulness is limited due to the side effects.
The mechanism of action is through the blocking of acetylcholine whose effects increase when the dopamine level drops.
Only about half of the patients receiving anticholinergics respond to them, usually for a short period and with only a 30% effect.
Side Effects
Trembling and involuntary movements dry mouth Accelerated heartbeats Constipation, retention/retention of urine Hallucinations memory loss blurred vision Changes in mental activity and confusion.
Therefore, great caution is needed at the older age and at higher doses.