Combinations - GHB + alcohol experiences

[Pino]

Swim has a friend, who was stupid enough to combine ghb and alcohol. Luckily the fool survived. Swim wants to share the experience for the sake of harm reduction.

General

Substances: GHB, Alcohol and weed
Dosage: 2 reasonable strength (.25 grams of polm each) joints, 5 doses of unknown quantity of unknown strength GHB (but swim thinks 1 dose resembles ~ 1 gram in effect, although he didn't take himself. Swim also never used GHB only GBL. It would be better to say it affected him as much as 1 ml gbl dose), 3 beers.
Duration: 11 hours.
Sex: Male.
Weight: 70 kg.
Setting: Illegal tekno party outside of town. Luckily very helpful and kind people.
Remark: User is an athlete. Has a great condition.

The experience

I typed this over from the internet, therefore I am using I instead of swim. Time is in hours.
T + 0: We are going to the party. My friend is taking his first dose.
T + 0.5: He is feeling effects. He know the strength of this batch out of experience.
T + 1: He is starting to get a bit bold in his behavior. I am doing mdma this evening. We are on the same wavelength and we are not. I am pacified, he is a bit on the aggressive side. But talking is great.
T + 2: On the party. The ambiance is relax. He is taking second dose. We are sharing a joint with someone else we met.
T + 2.5: Lost him for a while. I just want to dance.
T + 3: He returns with beer. I am questioning this with him. But he want to drink the beer, commenting he just takes one.
T + 4: Taking a second dose of mdma. Feeling ok. He is taking the third dose. He seems fine now. We are smoking a joint.
T + 4.5: He is drinking beer again.
T + 5: He start to act really drunk now. Feels a bit sick. I feel less then great. I am urging him to relax a bit with the GHB. He wants to drink more alcohol. But I forbid him to.
T + 7: He is clearing up again. He feels much better. He was quite dizzy for a while, but he seems to be very drunk. He is taking some GHB.
T + 8: Another dose down the hatch.
T + 9: He is very drunk now. He also seems to drink beer again.
T + 9.5: He starts to become sick and I take him outside.
T + 10: He is puking the whole time and falling on the ground. He can't stand up by himself. He comments he doesn't want to puke anymore.
T + 11: He is sitting on the ground still conscious. He says repeatedly he doesn't want to puke. I buy a bottle of fruit juice at the party for him. A girl, we know, offers to bring him home, because she is living in the same area as him. I leave him with her.

From the girl:

He is still filling very sick. The walk home is 45 minutes. During this he tried to get into the canal, because it would make him feel less sick and make the puking stop. He later commented he visualized himself swimming into the canal. He really believed it was a good idea at that time. During the walk he puked many times.

Afterwards

After the experience he was fine. He had some tolerance to GHB, because he was experimenting with it in a sport setting. He said he wouldn't drink 3 beer, if he hadn't take the first one. He experimented one more time with GBL and alcohol. He took 1.5 ml and 1 beer, which made him feel sick and dizzy.