Nicotinamide: Flushing of the face, arms & chest, itching, nausea. Fe: Nausea, vomiting, bloating & upper abdominal discomfort. Ginseng: HTN, nervousness, insomnia, edema, diarrhea & skin reactions. Royal jelly: Hypersensitivity reactions eg, eczema, rhinitis, urticaria, & bronchospasm.