Side effects. I took this supplement for about a week and immediately felt jittery. I also suffered massive headaches and couldn't identify the cause. After ceasing its use, I felt normal again. It simply wasn't suitable for me.
Headaches. After taking this for about two weeks, I developed a headache that wouldn't cease, day and night. I stopped taking it, and it took roughly 48 hours for the headache to diminish. I think Jarrow products are excellent, but I may be sensitive to this herb, as any brand possibly would have caused the same issue.
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Gave me a headache. This caused me a horrible headache. Perhaps 500mg is too much for me.
Love this stuff!. This makes me feel so much better! My sinus headaches vanish completely when I take these.
Causes headaches. It works but results in significant headaches.