Readers have generally reported that Nembutal is not available over-the-counter in the tourist hotspot of Puerto Vallarta. That said it may be available on prescription from some of the larger animal farmacias, such as the Clinica y Farmacia Veterinaria ‘Animal Central’ at Av. Los Tules No. 196, Col. Jardines de Vallarta.
Nembutal has been consistently reported as available in Valladolid, a small city in Yucatán, about 2 hours drive from Cancun. Best known for its colonial architecture, especially its cathedral, the town is also used as a touring base for visiting the nearby Maya ruins.
Nembutal was first reported as being available over-the-counter (and with no prescription) in Valladolid in 2010 when the cost of two bottles of Nembutal was 180 pesos each. In 2012 the price had risen to 600 pesos for two.