The adverse effects and drug interactions reported for Herbal products could be caused by impurities (e.g., allergens, pollen and spores) or batch-to-batch variability. Aconite: Heart palpitations and arrhythmias, hypotension, nausea, vomiting, abdominal pain, respiratory system paralysis, death. Gugulipid: Headache, nausea, hiccups, diminished efficacy of other cardiovascular drugs including diltiazem and proranolol.
