Minoxidil can cause hair growth as a side effect.
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August 1980 in “Circulation” Minoxidil may cause heart issues in animals and humans.
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August 1985 in “Contact Dermatitis” Minoxidil can cause allergic reactions like burning, itching, and red bumps.
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January 2021 in “Journal of The American Academy of Dermatology” Low-dose oral minoxidil for hair loss seems to have rare side effects, but more research is needed to confirm its safety.
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January 1987 in “Journal of The American Academy of Dermatology” The patient's hair loss was likely not caused by beta blockers but possibly by stress or other factors.