Is cannabis being doped with Viagra?
THAT illegal drugs are not always pure is no surprise, but is cannabis being laced with a Viagra-like compound? Dries de Kaste and colleagues at the National Institute of Public Health and the Environment in Bilthoven, the Netherlands, analysed a liquid that police found being sold on the streets of Utrecht as a “marijuana adulterant”. They found compounds called homosildenafil (HS) and thiohomosildenafil (THS) in it, which belong to the same class of compounds as sildenafil, sold as Viagra. All three inhibit the breakdown of an enzyme that dilates blood vessels in the penis,