Alprenolol (hydrochloride) is a non-selective beta blocker as well as 5-HT1A receptor antagonist.The reference for administration is 10 mg/kg.
References:
[1]. Schreiber R et al. Involvement of 5-HT1A receptors in the anxiolytic action of S 14671 in the pigeon conflict test. Pharmacol Biochem Behav. 1995 Jun-Jul;51(2-3):211-5.
[2]. Millan MJ et al. Novel benzodioxopiperazines acting as antagonists at postsynaptic 5-HT1A receptors and as agonists at 5-HT1A autoreceptors: a comparative pharmacological characterization with proposed 5-HT1A antagonists. J Pharmacol Exp Ther, 1994 Jan, 2