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#7 in Amino Acids Third-Party Tested
NOW L-Lysine 500mg (250 Tablets)
by NOW Foods
"Essential amino acid for immune health and collagen synthesis — 250 tablets at $0.05/day"
Amazon Rating
4.6/5
Reviews
16,200+
Price Range
$10-14
Servings
250 servings
GMP CertifiedNon-GMOVegan
Our Editorial Rating
8.3
Very Good
Overview
NOW L-Lysine provides 500mg of this essential amino acid per tablet. Lysine is critical for collagen synthesis, calcium absorption, immune function, and has been specifically studied for its role in managing herpes simplex virus (HSV) outbreaks. It's an essential amino acid that must be obtained from diet or supplementation. The 250-tablet count provides over 8 months of daily supplementation at roughly $0.05 per day.
Key Ingredients
| Ingredient | Amount |
|---|---|
| L-Lysine (Free Form) | 500 mg |
Pros & Cons
What We Like
- 250 tablets = 8+ month supply
- $0.05/day — exceptional value
- Essential amino acid
- Supports collagen and immune function
- 16,200+ reviews, 4.6 stars
What Could Be Better
- 500mg may need doubling for HSV management
- Tablet form (not capsule)
- Basic formula, no extras
- May need 2-3 tablets for clinical dose
Who Is This For?
Best For
- HSV outbreak management
- Collagen synthesis support
- Budget amino acid needs
- Immune health
Not Ideal For
- Those wanting higher per-tablet dose
- Those preferring capsules
- Those without specific lysine needs
Our Verdict
8.3/10 — Very Good
The essential amino acid at an essential price. 8+ months at $0.05/day for immune and collagen support. Particularly valuable for those managing HSV outbreaks.