The scientist who discovered one of the world’s most famous hallucinogenic drugs is celebrating his centenary. LSD – or Lysergic acid diethylamide – exaggerates inner problems and conflicts.It was hoped it would be useful in the treatment of mental illness.Doctor Albert Hoffman was the first person to experience the side effects of LSD after accidentally getting a droplet on his hand. Hoffman and his colleagues hoped that LSD would make a significant contribution to psychiatric research. “I’m having a wonderful birthday, you could describe it as a mind-altering party without LSD.”, he said. But LSD’s image suffered when it hit the streets in the mid-60s and uncontrolled use gave way to a social phenomenon. It quickly became the drug of choice for the “Flower Power” generation, whose rallying call was “Turn on, tune in, drop out”. But 40 years on, Hoffman himself is leading calls for the use of the drug to be re-assessed, claiming it does possess benefits for psychiatric patients.