Can You Take L-Lysine and L-Arginine Together?

May affect absorption

The short answer

Lysine and arginine compete for the same transport system (CAT transporters). They antagonize each other's absorption.

How to arrange timing

Space at least 1 hour apart for optimal absorption of each.

Reference

Reference noted for this combination: Examine.com 2024

Important context

Whether supplements suit you together also depends on dose, product formulation, health conditions, and medication use. Ask a doctor or pharmacist first if you take medication, are pregnant or breastfeeding, or have a chronic condition.