First time

Took GABA for the first time last night. Very odd experience almost felt like a MDMA come up and peak but right after I was dead. Started staring blankly at my computer screen and just put my head down and literally vibed to my playlist. Only thing was I stood up and got super hot and light headed and ended up throwing up about 3 hours in. I was just wondering if that’s a normal side effect and also wondering if there’s anyone that had experiences of it being almost like a m high but more zombie like. Also I took about 600 mg at first and then like 300 every half hour until I got too 1500mg