Best L-Lysine Nutritional Supplements for Cold Sore Management (2026)
We ranked supplements by formulation type, L‑lysine mg per capsule, capsule count relative to price, product ratings, and ingredient/transparency attributes
This roundup evaluates L‑lysine nutritional supplements for managing recurrent cold sores, focusing on formulations, dosage per capsule, and ingredient quality. Picks were selected by comparing capsule counts, per‑dose milligrams, third‑party testing reputation, and overall value for cold sore support
Top Picks
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1
L-Lysine supplement for immune support (270 capsules)
L-Lysine supplement supports immune function and arginine production. Users note high quality, easy-to-swallow small capsules and good value
- essential amino acid for immune health
- small capsule size
- trusted brand quality
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2
Nutricost L-Lysine 500mg (1000mg Serving), 500 Capsules
L-Lysine supplement with 500mg per capsule. Supports immune function and skin health; easy to swallow for many users. Customers note effectiveness for cold sores and fever blisters
- 500mg per capsule
- Non-GMO and gluten free
- Made in a GMP compliant facility
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3
L-Lysine HCL 1500mg capsules
L-Lysine HCL supplement in 1500mg capsules for amino acid support, tissue repair, and collagen formation. Customers note good quality and effectiveness for cold sores and shingles, with easy-to-swallow capsules and a high dose
- 1500 mg lysine per capsule
- supports collagen and tissue repair
- suitable for vegans