I just started taking L-Tryptophan on Sunday night before bed. Monday, i woke up feeling really refreshed even though I only slept 4 hours. My face and eyes were puffy. Well, i was in the best mood all day Monday and felt euphoric on and off. Also really content, the usual work stress did not bother me. I was very friendly and talkative throughout the day, and felt confident that problems would turn out ok.

Well I took the same on Monday night, which was 3 1000 mg. capsules (1 capsule also contains 250 mg. of L-Lysine and 66 mg. of Niacin which I just noticed). I felt well-rested in the morning, but I was so irritable all day Tuesday. I had trouble concentrating too, and felt negative about everything. I had major insomnia last night. edited to add: because of this, i only took 1 last night and feel the way i did before i started taking it.

Is this a known reaction to Tryptophan? Has this supplement worked for anyone? I suppose I should search through the old threads; didn't think about that before.