• GHB can be VERY DANGEROUS and even FATAL if mixed with other drugs, particularly alcohol. • The amount of GHB in a liquid can vary, so users won’t know how strong it is. Even a small overdose can cause unconsciousness and users can be unrouseable for 4-5 hours. • If incorrectly produced, GHB can badly burn the mouth. • Users have reported nausea and vomiting. • The long-term effects of GHB are not yet fully known. • Some users find it difficult to stop taking GHB.