Optimum Nutrition
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Seaweed Compound Vitamin Capsules
Seaweed Compound Vitamin Capsules
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Regular price
$24.69 USD
Regular price
Sale price
$24.69 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 →
48/100
Rejected
Six-dimension breakdown
Evidence
12
Formulation
10
Manufacturing
10
Safety
7
Transparency
6
Sustainability
4
Why this scored 48/100
Seaweed (kelp, kombu, wakame, nori, etc.) is a legitimate iodine source and provides trace minerals. But iodine content in commercial kelp products is famously variable and often excessive: US FDA analysis found some kelp supplements contain 500-3000% of the RDA per capsule, and this can cause iodine-induced hyperthyroidism (Jod-Basedow phenomenon), especially in people with autonomous thyroid nodules. Zava et al. (2011) documented multiple case reports of kelp-induced thyrotoxicosis. Additionally, some seaweeds concentrate arsenic (particularly hijiki, which has documented inorganic arsenic content exceeding safe intake limits). This SKU is generic 'seaweed compound vitamin' with no species disclosure, no iodine content per cap, and no arsenic testing. 'Compound Vitamin' implies co-formulated vitamins that are undisclosed. Standard 48/100: seaweed is a real ingredient with real (mainly iodine) nutritional value, but the variability and safety concerns push this near the Rejected threshold. Iodine supplementation should be dose-calibrated, not consumed via undisclosed kelp products.
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
- 48 / 100
- Tier
- Rejected
- Category
- Supplements
- Subcategory
- vitamins micronutrients
- Last scored
- Third-party certifications
- None on record at time of scoring
- Vendor
- Vivalo
- Product type
- 0
- Tags
- Shopify Collective, Vivalo
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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