Lysergic acid diethylamide (LSD) is a hallucinogenic drug that produces powerful sensory distortions, intensifies mood and alters thought processes. LSD is usually prepared in liquid form, which is then dropped onto small pieces of blotting paper known as ‘tabs’.

It is usually taken orally, either through swallowing or sublingual (under the tongue) administration. In rare cases, LSD is inhaled, injected or applied to the skin...