I am planning to combine LSD with other drugs. What are the consequences?

Combining different drugs can be risky and unpredictable. If you combine, you are more likely to have problems with your health. Here we describe the effects and risks of a number of combinations that are common or that are very risky. Check combining drugs for more information.


Users sometimes combine LSD with ecstasy (candy flipping). Since LSD and ecstasy are both mind-altering drugs, they can reinforce each other. The effects of this combination can be unpredictable. No research has been done on combined use with LSD. If you choose to combine these drugs, take less of both than what you would take if you’d take only one substance.
If you take MDMA first and LSD later or if you take MDMA and LSD at the same time, keep in mind that the MDMA has already worn off before the LSD has worn off. The end of the experience can then be difficult. Some people feel a little down when the MDMA wears off. If you’re still tripping, that can be difficult.

LSD and cannabis

Some people like to smoke weed during or at the end of their trip. Keep in mind that it is difficult to predict how cannabis will affect the trip. It can be relaxed, but it can also turn a good trip into a difficult experience. Before you start smoking weed, think about whether it is necessary and what benefit you think you will gain from it.