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L-Arginine improves blood circulation and may improve fertility in both men and women. Do not take it if you are prone to cold sores or have the herpes virus, as it can stimulate an outbreak. (90 capsules)

"L-Arginine is an amino acid or protein that improves vascular health and blood circulation. I choose this supplement to complement acupuncture treatments supporting fertility when I want to promote the flow of Qi and blood," Jill Blakeway, DACM, LAc