WARNINGS:
* Be safe...avoid mixing GHB with alcohol. GHB can be dangerous when used improperly or when mixed with other depressants. Combining a normal GHB dose with alcohol can trigger the overdose reaction of temporarily unrouseable sleep. GHB has been associated with 60 deaths in the US, according to the DEA, though most have involved other drugs (most commonly, alcohol) or high doses.
* GHB may dangerously depress breathing in some people, at very high doses, or in combination with other drugs (primarily alcohol). GHB can also cause vomiting in combination with unconsciousness, which can be a fatal combination. It has also been known to cause breathing similar to Cheynes-Stokes Breathing. GHB has been associated with 60 deaths in the US as of Jan 2000, according to the DEA, though only ~20 have been confirmed as GHB-only deaths.
* Be extremely careful with your GHB dose. Just as you don't want to drink 4x the amount of alcohol needed to get you intoxicated, you don't want to ingest more than a single dose of GHB. As with other substances, start low and work up slowly to find your own, individual level.
* If you take a double dose of GHB you may FALL UNCONSCIOUS and be UNROUSEABLE for up to 4 or 5 hours.
* If you take 3 - 4 times your Personal Threshold Dose, you may find yourself Unconscious and Vomiting.
* If you take more than 3-4 times your Personal Threshold Dose, there is risk of death.
* If you take GHB, make sure your friends know about its sleep inducing characteristics. One of the most common dangers of a mild GHB overdose is being taken to a hospital and treated as if you have OD'd on a depressant. This include stomach pumps, breathing tubes and IV's, not to mention huge hospital bills.
http://www.erowid.org/chemicals/ghb/ghb_health.shtml