Optimum Nutrition
THE BIOHACKING STANDARD
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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 →
'Keto' framing on a 1,000 mg sugar-free ACV gummy from a small DTC brand (note: NuttraFlair here is distinct from the more established NutriFlair capsule brand also in this batch). The 'Keto' branding on an ACV gummy is a weight-loss halo — there is no clinical evidence ACV gummies support ketogenic-diet outcomes, and the pairing exists to attach the product to a weight-loss audience without making a specific disease claim. Format still defeats the Johnston 2004 mechanism (liquid ACV pre-meal), and 'sugar-free' means sugar alcohols with GI implications. Manufacturer accountability is thin, no third-party testing or mother disclosure visible. Held in the low Rejected tier by diet-halo marketing plus mechanism-void format; no path to Standard without stripping the 'Keto' framing and moving to liquid.
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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NuttraFlair Keto Apple Cider Vinegar Gummies – Sugar-Free, 1,000 mg, 60 Count is a product from Apple Cider Vinegar, categorized under Weight management & metabolic 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.
40/100 overall — Rejected tier (0–49 band). Per-dimension breakdown: Safety 45, Sustainability 45, Manufacturing 42, Transparency 42, Formulation 38, Evidence 32. Scored as of 2026-08-24.
'Keto' framing on a 1,000 mg sugar-free ACV gummy from a small DTC brand (note: NuttraFlair here is distinct from the more established NutriFlair capsule brand also in this batch). The 'Keto' branding on an ACV gummy is a weight-loss halo — there is no clinical evidence ACV gummies support ketogenic-diet outcomes, and the pairing exists to attach the product to a weight-loss audience without making a specific disease claim. Format still defeats the Johnston 2004 mechanism (liquid ACV pre-meal), and 'sugar-free' means sugar alcohols with GI implications. Manufacturer accountability is thin, no third-party testing or mother disclosure visible. Held in the low Rejected tier by diet-halo marketing plus mechanism-void format; no path to Standard without stripping the 'Keto' framing and moving to liquid.
Strongest: Safety at 45/100 (adverse-event profile, interaction risk, and dose ceiling) and Sustainability at 45/100 (sourcing practices, packaging, and corporate practice). Weakest: Formulation at 38/100 (dose adequacy, bioavailability form, and ingredient redundancy) and Evidence at 32/100 (quality of published RCT support for the active ingredients at the label dose). 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.
path to Standard without stripping the 'Keto' framing and moving to liquid.
The top-ranked weight management & metabolic health product in the Vyvata catalog is currently Thorne Berberine Dietary Supplement 1000 mg 60 Capsules at 80/100. See the full ranked list of 218 scored products in this subcategory at https://vyvata.com/pages/best-weight-management-and-metabolic-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=Apple%20Cider%20Vinegar%20NuttraFlair%20Keto%20Apple%20Cider%20Vinegar%20Gummies%20%E2%80%93%20Sugar-Free%2C%201%2C000%20mg%2C%2060%20Count),Google(https://www.google.com/search?q=Apple%20Cider%20Vinegar%20NuttraFlair%20Keto%20Apple%20Cider%20Vinegar%20Gummies%20%E2%80%93%20Sugar-Free%2C%201%2C000%20mg%2C%2060%20Count+reviews),Reddit(https://www.reddit.com/search/?q=Apple%20Cider%20Vinegar%20NuttraFlair%20Keto%20Apple%20Cider%20Vinegar%20Gummies%20%E2%80%93%20Sugar-Free%2C%201%2C000%20mg%2C%2060%20Count%20review),andTrustpilot(https://www.trustpilot.com/search?query=Apple%20Cider%20Vinegar%20NuttraFlair%20Keto%20Apple%20Cider%20Vinegar%20Gummies%20%E2%80%93%20Sugar-Free%2C%201%2C000%20mg%2C%2060%20Count).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.
Every VSF-related metafield surfaced verbatim. Nothing hidden. If you spot data that looks wrong, let us know.
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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