Optimum Nutrition
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VeggieVerve/Livingston Naturals 'Super Appetite Booster' liquid with gentian, centaury, blessed thistle, fenugreek, burdock, ashwagandha, Siberian ginseng, ginger, turmeric and other bitter and nourishing herbs. The category — appetite stimulation for underweight adults and children — is real and legitimate (chemotherapy patients, cachexia, eating disorder recovery, geriatric malnutrition all have real clinical need), but it is a category where evidence-based interventions are prescription (dronabinol, mirtazapine, megestrol) or clinical dietetics-guided, not multi-herb tinctures at undisclosed doses. The 'suitable for adults and children above 3.5 years' framing is a serious concern — pediatric supplement dosing is highly regulated for good reason, and multi-herb tinctures with adaptogens and phytoestrogens (fenugreek in particular is contraindicated in children and pregnancy due to phytoestrogenic activity) should not be dosed to young children without pediatric endocrine review. Autofail on safety_concern (pediatric use of adult-formulated adaptogen blends) + proprietary_blend_hides_dose.
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.
FAQ data has not been generated for this product yet. See the site FAQ for general questions.
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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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