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Herbs are natural hence many believe it is safer than modern pharmaceutical drugs. It is wrong to believe that because a product is natural means it is safe. So one need to exercise cautions when considering herbal remedies. They can cause harm in their own little ways. Chemical compounds found in herbs can change heart rate, elevate blood pressure and glucose level. Moreso they can make one dizzy and cause nausea. It is strongly advised that people having heart problem, high blood pressure, or high glucose level should consult a qualified healthcare practitioner before undergoing any herbal regimen. Herbs can be effective in treating an ailment but can also trigger allergic reactions. For example, ephedra is a herb taken for weight loss, but the herb can also elevate blood pressure.
Just like pharmaceutical drugs, herbal medicine have recommended dosage. Yes they are natural products but moderation is the key to limit any side effects. Another rule of safety when taking herbs, is never to combine it with orthodox medicine. They may cause adverse reaction or even reduce the efficacy of the drug. Bottom line is, if you are taking any prescription drug, consult your healthcare provider before taking herbs. Your health is your responsibility!