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Now L-Lysine 500 mg Dietary Supplement 100 Tablets
Now L-Lysine 500 mg Dietary Supplement 100 Tablets
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No reviews
Regular price
$32.83 USD
Regular price
$38.62 USD
Sale price
$32.83 USD
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The full picture
Everything Vyvata knows about this product — the score, the evidence, the FAQ, and where else to find shopper reviews. No hidden data. Every vendor is scored on the same published rubric — no brand can pay for placement. Read the rubric →
65/100
Standard
Six-dimension breakdown
Evidence
60
Formulation
65
Manufacturing
70
Safety
75
Transparency
68
Sustainability
58
Why this scored 65/100
NOW Foods is a well-established US supplement brand founded in 1968 with an in-house quality control program (they operate multiple ISO-certified testing labs). L-Lysine 500 mg is a single-ingredient tablet at a disclosed dose, 100-tablet supply for cost-effective long-term use. Same evidence base as the Solgar L-Lysine 1000 mg SKU scored earlier — moderate RCT evidence for HSV-1 outbreak reduction at daily doses of 1000-3000 mg (Griffith 1978, DiGiovanna 1984). 500 mg per tablet gives users granular dose control (2-6 tablets/day for typical HSV protocols). NOW's brand-level manufacturing quality is credible; NOW is one of the more commonly-cited brands in independent testing publications with generally-good labeling accuracy. Standard-tier entry — held from Verified by absence of visible USP certification on this specific SKU (NOW has USP-Verified products but not all SKUs). Solid single-ingredient basic.
Last scored: Full rubric →
Evidence & sources
The Vyvata score's Evidence dimension measures the quality of published RCT support for a product's active ingredients at the label dose. Our source hierarchy: double-blind RCTs in MEDLINE-indexed journals > single-blind RCTs > open-label trials > observational studies > mechanism papers > N=1 case studies (anecdotes). Predatory journals and manufacturer-authored studies without independent replication are weighted down.
Product-specific evidence citations for this item are embedded in the analysis text on the "Analysis" tab. For the full framework and evidence hierarchy, see the methodology page.
How to read the Evidence dimension
- 80–100: Multiple double-blind RCTs in indexed journals directly testing this product OR the exact ingredients at the exact dose.
- 60–79: Single double-blind RCT + supporting ingredient literature at the studied dose.
- 40–59: Open-label trials + ingredient literature; no product-specific double-blind evidence.
- 20–39: Ingredient literature only; no product-specific trials or trials in predatory venues.
- 0–19: No credible evidence base or unverifiable claims.
FAQ data has not been generated for this product yet. See the site FAQ for general questions.
Customer reviews
Reviews on other platforms
The Vyvata score measures product integrity against a published rubric, not customer sentiment. Vyvata does not aggregate, republish, or license third-party reviews — the links below open search pages on their respective platforms.
All the data we have on this product
Every VSF-related metafield surfaced verbatim. Nothing hidden. If you spot data that looks wrong, let us know.
- VSF score
- 65 / 100
- Tier
- Standard
- Category
- Supplements
- Subcategory
- immune antioxidants
- Last scored
- Third-party certifications
- None on record at time of scoring
- Vendor
- Beauty Care Bag
- Product type
- Supplements
- Tags
- Beauty Care Bag, Shopify Collective
Every score is set from the published rubric, audit-logged, and rescored whenever new evidence emerges (published trials, updated labels, third-party testing releases). Every vendor is scored on the same criteria — no pay-to-play. See our editorial-independence disclosure for the full policy, including brands with an editorial relationship to this site.
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