Optimum Nutrition
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[Rescored via evidence crawl] Previous score 68 → new 72. Evidence found: Ziegler D, et al. Oral treatment with alpha-lipoic acid improves symptomatic diabetic polyneuropathy: the SYDNEY 2 trial. Diabetes Care. 2006;29(11):2365-70 (used 600 mg/day). | Mijnhout GS, et al. Alpha lipoic acid for symptomatic peripheral neuropathy in patients with diabetes: a meta-analysis. Int J Endocrinol. 2012;2012:456279.. Rationale: ALA has TIER-B evidence for diabetic peripheral neuropathy at 600 mg/day. 200 mg is 1/3 the studied dose; may still help mild oxidative stress but subclinical for neuropathy. +4 uplift acknowledges ingredient evidence at scale but flags the dose gap.
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.
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Solgar Alpha Lipoic Acid 200mg 50 Vegetable Capsules is a product from Solgar, categorized under Longevity & cellular health in the Supplements vertical. It is scored on the Vyvata Scoring Framework — an independent 6-dimension rubric applied uniformly to every product Vyvata lists.
68/100 overall — Standard tier (50–69 band). Per-dimension breakdown: Manufacturing 78, Safety 72, Evidence 70, Formulation 70, Transparency 65, Sustainability 55. Scored as of 2026-08-24.
Solgar Alpha Lipoic Acid 200mg vegetable capsule. ALA has real evidence for diabetic peripheral neuropathy (Ziegler 2011 meta-analysis at 600mg/day IV or oral), insulin sensitivity modestly, and antioxidant regeneration (glutathione, vitamin C, CoQ10 recycling). Solgar practitioner-grade quality. Held below Verified by (1) 200mg is below the therapeutic dose range for diabetic neuropathy (600mg/day is standard, split into 200mg 3×/day) — practical for that use case if multiple caps daily; (2) R-lipoic acid vs mixed R/S racemic form not specified — R-form is the biologically active isomer with better bioavailability; standard ALA is racemic; (3) no third-party COA. Would move to Verified 70+ with R-lipoic form disclosure OR higher-dose SKU + third-party COA.
Strongest: Manufacturing at 78/100 (third-party testing, GMP compliance, and facility audit status) and Safety at 72/100 (adverse-event profile, interaction risk, and dose ceiling). Weakest: Transparency at 65/100 (dose disclosure vs proprietary blends, and honesty of marketing claims) and Sustainability at 55/100 (sourcing practices, packaging, and corporate practice). All six dimensions feed the overall Vyvata score; a weakness on any one dimension pulls the overall down proportionally.
No third-party certifications (NSF, USP, ConsumerLab, or equivalent) were on record at the time of scoring. This affects the Manufacturing dimension score. The manufacturer may test internally or have obtained certification more recently — check the current product label for the most up-to-date information.
Would move to Verified 70+ with R-lipoic form disclosure OR higher-dose SKU + third-party COA.
The top-ranked longevity & cellular health product in the Vyvata catalog is currently Tru Niagen - Niagen 300 mg Nikotinamid Ribosid Supplement for Anti-Aging & Cellular Energy Support - 30 Capsules at 78/100. See the full ranked list of 131 scored products in this subcategory at https://vyvata.com/pages/best-longevity-and-cellular-health-supplements-ranked.
The Vyvata Scoring Framework rates every listed product 0–100 across six dimensions: Evidence, Formulation, Manufacturing, Safety, Transparency, and Sustainability. Tier bands: Elite 85–100 (top-tier evidence + formulation + manufacturing), Verified 70–84 (strong on most dimensions), Standard 50–69 (solid but with weaknesses called out), Rejected 0–49 (specific failures documented). Rejected products remain listed with reasons. Full methodology at https://vyvata.com/pages/methodology.
The Vyvata score measures product integrity against a published rubric, not customer sentiment. For customer reviews and community discussion, search external platforms directly: Amazon (https://www.amazon.com/s?k=Solgar%20Solgar%20Alpha%20Lipoic%20Acid%20200mg%2050%20Vegetable%20Capsules),Google(https://www.google.com/search?q=Solgar%20Solgar%20Alpha%20Lipoic%20Acid%20200mg%2050%20Vegetable%20Capsules+reviews),Reddit(https://www.reddit.com/search/?q=Solgar%20Solgar%20Alpha%20Lipoic%20Acid%20200mg%2050%20Vegetable%20Capsules%20review),andTrustpilot(https://www.trustpilot.com/search?query=Solgar%20Solgar%20Alpha%20Lipoic%20Acid%20200mg%2050%20Vegetable%20Capsules).Vyvatadoesnotaggregate,republish,orlicensethosethird-partyreviews.
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.
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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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