Kim tested positive for propanolol, a betablocker that limits trembling.
From the fresnobee.com
Would medicine permit the use of reserpine when clonidine and propanolol have been developed?
From the blogs.psychcentral.com
More examples
The first beta blocker (trade name Inderal) used in treating hypertension and angina pectoris and essential tremor
Propranolol (INN) is a non-selective beta blocker mainly used in the treatment of hypertension. It was the first successful beta blocker developed. ...