If your blood pressure is 130/90 and are taking a metabolic enhancer what are the dangers if any?

I recently joined a weight loss clinic and was put on a metabolic enhancer, flaxseed, multivitamins and protein shakes to loose weight. But, I have been feeling anxious, jittery, and cannot sleep. I'm 44. When I talked to the clinic they said not to be concerned. Should I be concerned? Something doesn't sit right with me especially if my body is telling me different. Any information would be appreciated.