(lucy, tabs, blotter, acid)

LSD (Lysergic acid diethylamide) is a hallucinogenic drug that was first synthesised by Albert Hofmann in 1938. Its hallucinogenic properties were discovered in 1943 when Hofmann accidentally ingested some and had a now iconic bike ride home. LSD generally comes absorbed onto a small square of paper and is sometimes available as a clear, tasteless liquid or dropped onto sweets/sugar cubes.

Effects | Dosage | Advice | Support


The effects of LSD generally take around 30-90 minutes to kick in and will last 9-14 hours:


As always, the appropriate dose will depend on your weight, tolerance and gender, amongst other factors. This is a guide only:

Harm Reduction Advice

Access Support

The Drop is BDP’s one stop shop for support, advice and resources around party drugs.

Visit The Drop

External Resources

Drug combinations

Visit for more information.

Image Credit: Dominic Milton Trott