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What are the risks of taking lysine?

Since lysine has not been approved by the US Food and Drug Administration (FDA) to treat any condition, there is little information about its safety, efficacy or purity. In addition, there are not any manufacturing standards or regulations in place for supplements like this. There have been reports of supplement products being contaminated with toxic substances or metals. Always purchase herbal and health supplements from reputable and reliable sources to minimize risks. Take supplements only as directed on the label or as directed by your doctor, pharmacist, nutritionist or healthcare provider.

Continue Learning about Lysine

Is lysine safe for children?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
L-lysine is usually not recommended for infants or toddlers. Most other children will receive ad...
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What are the side effects of lysine?
MediGuardMediGuard
Based on information from iGuard.org, a free medication monitoring service, 3% of patients experien...
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Are symptoms like fainting and feeling hot normal with lysine supplement?
MediGuardMediGuard
This is not a typical reaction to taking lysine supplements and needs to be reported and evaluated b...
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What is the maximum daily dosage for lysine?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
If you are taking lysine, follow your doctor's instructions or the directions on the package label r...
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.