I just got a bottle of TTA 500 on Monday and took 1 cap in the morning on an empty stomach and another before dinner. Felt fine the first day. Second day started to get a slight headache and took just the morning dose. Headache got worse as the day went on; almost like a throbbing at the top back of my head, this lasted into the night. Didnt take any today, 3rd day, and headache still there but barely noticeable. Could the TTA 500 be causing this headache? If so, anything I can do tothis? Thanks for your replies.