1 Combined effects with other substances. 2  According to studies, abusing OTC medicines is associated with a higher risk of abusing alcohol or illicit drugs. 3  DXM is often a gateway drug, says James E. Lessenger, MD, who has studied OTC medicine abuse in California.
72km (45 miles) S of Mexico City; 45km (28 miles) NE of Cuernavaca. TepoztlÃ¡n is one of the strangest and most beautiful towns in Mexico. Largely undiscovered by foreign tourists, it occupies the floor of a broad, lush valley whose walls were formed by bizarrely shaped mountains that look like the work of some abstract expressionist giant.
Tenochtitlan was the capital city of the Aztec Empire. The Aztecs built Tenochtitlan around 1325, right on a lake called Lake Texcoco. As the Empire grew, so did Tenochtitlan. By the early 1500s, at least 200,000 people lived in the city.