I took an over the counter diet pill that contained hoodia. It gave me high blood pressure. I'm not sure if it was the hoodia, or something else in the mix, but I typically have low blood pressure, and it did go back down as soon as I stopped taking the pills. I'm not really sure that it helped curb my appetite anyway. I would suggest that you make sure you are taking a good multivitamin every day, as well as a chromium supplement (lots of people like Chromium picolinate, I personally like the Vitamin Shoppe's chromium "glucose tolerance factor" formula.) Chromium really does help prevent that really bad feeling that comes with low blood sugar. That, and drink a lot of water too. Good luck!