When taking supplements consider the following:
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There may be side effects;
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There may be adverse reactions from interaction with other herbs or drugs;
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Controlling dosage and purity can be a problem with herbs;
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They may be unnecessary and, while not harmful, of no benefit;
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Natural doesn’t imply beneficial or harmless;
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Although some supplements contain useful drugs, they may not be suitable for self-medication because optimal control of some medical conditions should be tailored to individual risk factors and be medically monitored; and
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There is always the possibility that there is a safer, more reliable, and cheaper alternative available.