Vetman, I agree with Bob that any medication may have an adverse effect.I started on C/L but had multiple issues tolerating it and was given too high a dosage. Neurologist switched me to Rytary and after several tweaks in dosage, I am doing well on it.
Since we are all so different,one medication may work for someone while a different option may be needed for another. See you neurologist to discuss what you are experiencing.It may be helpful to keep a log and not wait for your next appointment. You can discuss this over the phone if need be.Pleaselet.