<unk>  is a drug used in veterinary medicine to reverse the effects of xylazine in dogs and deer. It is used as a research reagent. In the US, it is prescribed, but now rarely, for erectile dysfunction in men.
Yohimbine
Acebutolol
Phenylephrine
Metergoline
Amiloride
Cyclothiazide
Prazosin
Moclobemide