Endogenous serotonin system does not participate in the withdrawal opiate, but its inhibition by stimulation 5-HT1A receptor increases the effectiveness of the clonidine in rats / El sistema endógeno de serotonina no participa en la abstinencia opiácea. HAAJ [Internet]. 2003 Jun. 30 [cited 2026 Jul. 25];3(1). Available from: https://ojs.haaj.org/haaj/article/view/150