All meds (& supplements) have possibility of side effects.
Poss side effects of toprol (metoprolol) include: sexual dysfunction, increased triglycerides, bronchoconstriction, bradycardia, hypotension, heart block, fatigue, & dizziness. However, don't forget that most people do fine, or have a brief adjustment period then are fine. Talk w/ ur doctor about whether the potential benefits outweigh potential risks.
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