Ya ba

Ya ba (also Yaba, Yaa baa, Ya baa or Yah bah; Thai: ยาบ้า, literally "madness drug") are tablets containing a mixture of methamphetamine and caffeine, typically brightly colored in orange or green and carrying logos such as "R" or "WY". They are sometimes called Bhul Bhuliya in India and Shabu in the Philippines, Indonesia and Japan.

The drug is also known as "Nazi speed" as it was originally created by German scientists during World War II to increase the endurance of their soldiers

Quality varies according to source, most are manufactured for oral administration or "chasing" on foil; there is a brand preferred for injecting from Laos. This illegal drug combination is especially popular in Thailand, where it is imported from neighboring Burma, Laos and Cambodia. In recent years it has also been used by immigrant populations in the United States, and occasionally as a club drug replacing ecstasy. In February 2010 it was reported that increasingly large quantities of Yaba are being smuggled into Israel by Thai migrant workers leading to fears that its use will spread to the Israeli club scene, where Ecstasy use is already common

Yaba tablets were outlawed by the Thai government in 1970; at the time they were sold at gas stations and used by Thai truckers to keep awake. After many horrific long distance bus accidents, and deposed Prime Minister Thaksin Shinawatra's campaign from 2003 onwards to eliminate drug trafficking, use of the drug for bus drivers is not as widespread as it was. Retail prices have risen from 100–150 baht ($3–4) to 250–450 baht per pill as a result of the crackdown, though it remains a popular party drug.

Heres a good youtube video about it