That's interesting. I've actually found that it, coupled with other nootropics, reduces my anxiety by quite a lot. I've been taking it for a couple months and haven't had any negative side effects. I used to get "racing heart", palpitations, HBP, and other symptoms when I'm stressed (which now I'm attributing to the general bucket of "anxiety"), and these supplements really help calm my nerves throughout the day and I haven't had many symptoms since.