L-Lysine helps prevent cold sores and boosts immune function, helping cut recurrence and severity of herpes simplex outbreaks, making lysine supplementation easier for busy, health-minded folks.

Available Sizes & Variants:

100 capsules — standard daily dose for maintenance.

Benefits & Features:

• Helps prevent cold sores by delivering 500 mg lysine per capsule.
• May help reduce recurrence and severity of outbreaks in those prone.
• For ongoing prevention, studies have linked daily intakes around 1,000 mg to fewer cold sores, while lower doses may not show the same benefit consistently.
• Great for daily use to support immune function and overall wellbeing.
• Clean capsule formula keeps inactive ingredients low.

Beyond purity, Klaire Labs' approach starts at the source. The brand sticks to certificates of analysis and ingredient verification, with a long standing dedication to cGMP and third party testing. The 500 mg lysine per capsule makes it easy to fit this amino acid into your daily routine. It sits neatly in our supplement store and herbal supplements shelves for easy daily use, helping you find lysine supplements with confidence.