L-Lysine is an essential amino acid many people take to support their body's immune system. Nutricost L-Lysine 1000mg is backed by Nutricost's Satisfaction Guarantee so you can confidently get the L-Lysine your body wants and needs. Nutricost's L-Lysine is non-GMO, gluten free and tested by 3rd party, independent iso-accredited laboratories.

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