This keeps happening

Every since I started the GABA, I have these cycles. I am at the end of the point of one of them right now. I start feeling tired. THen I notice my strength is gone. Usually there is some constipation. Over a few days, I will put on 6-8 pounds of water weight. Then my kidneys will hurt. I will start feeling flu like symptoms. Headaches, achey, tired. I will sleep a lot. Cold hands.

Then...then it clears.

Answers-? I dont know. I have not paid attention to the cycle enought to have an idea what is happening, but somehow I suspect that the GABA makes the other supplements, including the HTP, work better. I feel like I am mad flushing some copper. Who knows. Its not that bad. Clothes fit snugly. Headaches. Hope it calms down over time.