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What Does the L Mean in L-Tyrosine and L-Theanine?

L- in front of the amino acid (ex: L-Tyrosine) means that the amino acid is in its free form.  The L- tells us that the amino acid is not attached to other amino acids with peptide bonds forming a chain called a protein.  L- also tells us that the amino acid is on its own and in the form that your body would put it in so that you can absorb it.  L- means free-form.

This question was answered by a trained product specialist at Swanson Health Products. Do you have a question you’d like answered? Send them via email to drea658baic@compend.me.

(Note: as per industry regulations, we cannot and will not answer medical questions, make treatment or diagnosis recommendations or comment on disease inquiries. Such questions must be answered by your doctor or professional healthcare provider.)

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