Solaray Timed-Release Biotin 5,000 mcg, 60 VegCaps Review
#6 of 9 · Timed-Release Option✓ Label verified · Supplement Facts read Sep 7, 2026Real retailer photo, cut out. Label unedited.
Consider it. A timed-release gimmick on a vitamin that doesn't need one -- decent, but pointless. Two-stage release, vegan, gluten-free, cheap at ~$0.17/serving from a heritage brand.
~$10~$0.17/serving
Why It Scores 6.1 — And The Label Line Behind Each Number
Third-Party Testing & Purity
30% of scoreOnly a brand 'lab verified' claim with no independent USP/NSF seal, and the formula includes magnesium stearate and silica flow agents. Below the audited-facility and certified picks above it.
- Testing
- Brand 'lab verified' claim only (no USP/NSF)
Dose Sensibility
25% of score5,000 mcg is ~16,667% of the Daily Value -- above any dietary need, with the usual lab-interference caveat.
- Dose
- 5,000 mcg (16,667% DV)
Formulation Integrity
20% of scoreVegan and gluten-free, but contains magnesium stearate and silica excipients, and the timed-release mechanism is functionally unnecessary for a water-soluble vitamin.
- Form
- Two-stage timed-release veg capsule
- Excipients
- Contains magnesium stearate & silica
Value per Serving
15% of score~$0.17/serving at about $10 is cheap, though the 60-count means a shorter supply than similarly priced picks.
- Count
- 60 veg capsules / 60-day supply
- Serving size
- 1 veg capsule daily
- Cost per serving
- ~$0.17
- Price
- ~$10
Suitability & Transparency
10% of scoreVegan and gluten-free suitability is good, but marketing a timed-release benefit for an excreted vitamin overstates what the format delivers.
Label verified. Every figure read from the Supplement Facts photo, Sep 7, 2026.
Marketing Claims Vs. Reality
Two-stage timed-release delivery improves absorption
Biotin is water-soluble and readily absorbed; the body excretes any excess. There is no evidence that a timed-release curve improves biotin status or hair outcomes, so the benefit claim is unsupported.
Vegan and gluten-free
The veg capsule and label support the vegan and gluten-free claims.
Lab verified quality
This is a brand self-claim with no independent USP or NSF seal; it indicates internal QC but not third-party verification.
5,000 mcg supports hair, skin and nails
Biotin helps hair only in deficiency (Patel 2017, PMID 28879195); at normal biotin status no effect is demonstrated, and the release format does not change that.
What Our Test Actually Found
A feature that solves nothing
Timed-release matters for compounds you want to keep at steady blood levels. Biotin isn't one -- it's water-soluble and excreted when in excess, so a staggered curve delivers no meaningful advantage.
Extra excipients for the mechanism
Achieving the two-stage release adds magnesium stearate and silica flow agents. They're common and generally benign, but they make the formula less clean than the two-ingredient picks above it.
Cheap, but shorter supply
At ~$0.17/serving it's inexpensive, though the 60-count bottle runs out faster than similarly priced 100-plus-count options, softening the value case.
Heritage brand, thin verification
Solaray has 50-plus years behind it, but this SKU offers only a self-declared 'lab verified' claim -- no independent seal to back the quality.
Full analysis: all pros & cons (7), buy if / skip if
- Two-stage timed-release delivery (half fast, half over ~8 hours)
- Vegan and gluten-free
- Cheap at ~$0.17/serving from a 50+ year heritage brand
- Single daily capsule
- Timed-release is pointless for a vitamin the body excretes when in excess
- Contains magnesium stearate and silica flow-agent fillers
- No independent USP/NSF seal
- You specifically want a timed-release format and understand its limits
- You want a cheap vegan, gluten-free cap from a heritage brand
- You aren't bothered by magnesium stearate or silica fillers
- You want testing rigor or an independent seal
- You'd rather not pay for a delivery feature that changes nothing
Two-stage release, vegan, gluten-free, cheap at ~$0.17/serving from a heritage brand. But timed-release is meaningless for a water-soluble vitamin the body excretes in excess, it contains flow-agent fillers, and there's no independent seal. Fine, not compelling.
Solaray's twist is a two-stage timed-release capsule: half the dose fast, half over roughly eight hours. It's a clever-sounding delivery from a 50-plus-year heritage brand, vegan and gluten-free at a cheap ~$0.17/serving. The problem is that biotin is water-soluble -- your body excretes any excess regardless of the release curve -- so you're paying for a feature that solves a non-problem, with magnesium stearate and silica fillers and no independent seal.
An interesting idea that solves a non-problem
The timed-release angle sounds clever but addresses nothing real -- your body simply excretes excess biotin regardless of the release curve. It's decently priced and clean enough, from a long-standing brand, but you're paying for a feature that does nothing and accepting flow-agent fillers and no independent seal to get it. Fine, not compelling.
If This Doesn’t Fit — Try These
03NOW Biotin 5,000 mcg
Our take: The best pick for someone who wants a clean, allergen-friendly capsule from a brand that actually runs its own testing labs, without paying boutique prices.
05Solgar Biotin 5,000 mcg
Our take: The pick for the allergen-sensitive buyer who wants the widest 'free-from' guarantee.
01Nature Made Biotin 2,500 mcg
Our take: If you're going to take biotin at all, this is the one to buy.
Quick Answers
Does timed-release biotin work better?
No. Biotin is water-soluble and excess is excreted, so a staggered release doesn't improve biotin status or hair outcomes. It's a marketing feature, not a functional advantage.
Are the fillers a problem?
Magnesium stearate and silica are common flow agents and generally considered safe, but they make this formula less clean than the two-ingredient options higher on the list.
Is it well tested?
Only by the brand's own 'lab verified' claim -- there's no independent USP or NSF seal, so verification is weaker than the audited-facility picks above it.
Is it a bad product?
Not bad -- vegan, gluten-free and cheap. It just charges you for a delivery gimmick that changes nothing, so cleaner same-dose options are better buys.
Sources & Further Reading
2 peer-reviewed sources, each linked to PubMed
- [1] Patel DP, Swink SM, Castelo-Soccio L. A Review of the Use of Biotin for Hair Loss. Skin Appendage Disord. 2017;3(3):166-169. PMID 28879195 — A Review of the Use of Biotin for Hair Loss. Biotin benefits hair only in true deficiency; delivery format does not create a hair benefit where none exists in non-deficient people.
- [2] Soleymani T, Lo Sicco K, Shapiro J. The Infatuation With Biotin Supplementation: Is There Truth Behind Its Rising Popularity? J Drugs Dermatol. 2017;16(5):496-500. PMID 28628687 — The Infatuation With Biotin Supplementation: Is There Truth Behind Its Rising Popularity?. The popularity of biotin outpaces its evidence; routine supplementation in healthy people is not supported by controlled data.
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