Verified
“100 mg 5-HTP from Griffonia simplicifolia seeds.”
Matches the label — 100 mg of 5-HTP extracted from Griffonia simplicifolia seeds, the standard clean source at the standard starting dose. Accurately described.
Reviewed
Verified by SAC team
+10
XP on completion
Best legacy-brand capsule
Jarrow Formulas · 100 mg 5-HTP, HPLC-verified · 60 veg capsules
Jarrow Formulas 5-HTP 100 mg Review
7.3/10SAC Product Score™
Jarrow Formulas 5-HTP 100 mg is a clean, dependable 100 mg Griffonia capsule from one of the supplement industry's respected legacy brands, with HPLC purity verification noted on the label as a transparency touch. There's genuinely nothing wrong with it: the dose is the standard starting strength, the source is the right one, the capsule is vegan and allergen-friendly, and the HPLC callout is a real (if modest) quality signal for a single-ingredient product. It ranks last not because of a flaw but because it's a generalist in a strong field. Everything it does well, another pick does better: NOW (#1) and Doctor's Best (#2) match its quality with 120-count bottles at similar or lower cost (Doctor's Best adds cofactors), Pure Encapsulations (#3) out-cleans it on hypoallergenic formulation, and Thorne (#6) out-tests it with full certification. It has no cofactors and no enteric coating. And the universal rule applies regardless of brand pedigree: 5-HTP raises serotonin, so no combining it with antidepressants or other serotonergic drugs without a clinician's sign-off. Here's the full breakdown.
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Read the complete 5-HTP guide →How we built the SAC Product Score™ — 7.3/10
Dose & form (enteric / cofactors)30%8/10
A clean, correct 100 mg starting dose in a vegan capsule — exactly right for a first-time buyer. Held mid-pack because it's plain: no enteric coating and no B6/C cofactors. Functionally equivalent to NOW (#1) on form, without NOW's value edge or Doctor's Best's cofactors.
Source & purity (Griffonia)25%9/10
Sourced from Griffonia simplicifolia seeds with HPLC purity verification called out on the label — the strongest source/purity-transparency story among the plain capsules. The HPLC mention is a genuine plus for a single-ingredient product and Jarrow's best axis.
Third-party testing20%7.5/10
HPLC purity verification plus Jarrow's house QC is solid and a touch above bare commodity testing. But HPLC purity verification is not the same as full independent third-party certification (Thorne, #6) or ISO-accredited batch testing (Nutricost, #7), so it sits in the upper-middle, not the top.
Value per day15%7/10
Roughly $0.25 per capsule across only 60 capsules — fair, but clearly out-competed. NOW (#1, ~$0.18) and Doctor's Best (#2, ~$0.17) deliver the same dose across 120-count bottles for less per serving, and Doctor's Best throws in cofactors. The shorter runway and middling per-cap cost are the main reason it lands at #9.
Real-world mood/sleep response10%8/10
Reliable and well-tolerated, with the consistency you'd expect from an established legacy brand. The usual mild-nausea-on-empty-stomach caveat applies (not enteric-coated) and is handled with food. Felt mood/appetite response is individual and the evidence base is modest, so we keep this measured.
The product at a glance
- Active
- 100 mg 5-HTP (1 capsule)
- Source
- Griffonia simplicifolia seeds (HPLC purity-assured)
- Cofactors
- None
- Coating
- Not enteric-coated
- Count
- 60 veg capsules
- Cost
- $15 / bottle = ~$0.25 per 100 mg capsule
- Testing
- HPLC purity verification · house QC
- Best for
- Buyers who want a clean, HPLC-verified capsule from a trusted legacy brand
- Safety
- Do not combine with SSRIs/SNRIs, MAOIs, triptans or other serotonergic drugs
Marketing claims vs. reality
Verified
“Purity assured by HPLC.”
Jarrow notes HPLC (high-performance liquid chromatography) purity verification on the label, a genuine analytical method for confirming the 5-HTP's identity and purity. The claim is accurate; note it is a purity-verification step, not a full independent third-party certification.
Partial
“Supports mood, sleep, and a sense of well-being.”
Modest mechanistic basis via the serotonin-precursor pathway (and serotonin being upstream of melatonin); the best mood evidence (Shaw 2002, PMID 12169147) showed a signal of benefit on a thin study base, and there's no strong stand-alone human sleep RCT. Reasonable as supportive framing, overstated as proven outcomes.
Verified
“Vegan, Non-GMO.”
Consistent with the labeling — a vegan capsule that is Non-GMO and allergen-friendly. Formulation facts that match the listing.
What our test actually found
01Nothing wrong with it — it just wins nothing
The fairest summary of Jarrow 5-HTP is that it's a genuinely good product with no standout advantage. Clean 100 mg dose, Griffonia source, HPLC-verified, trusted brand — all solid. But on a list this strong, 'solid everywhere, best nowhere' is exactly what #9 looks like. It's not a warning; it's a ranking reality. If you bought it, you'd be fine; you'd just be slightly overpaying versus NOW or missing the cofactors versus Doctor's Best.
02The HPLC callout is its best feature
Jarrow's one real differentiator is the HPLC purity-verification noted on the label — a transparency touch that not every value brand bothers with, and a reassurance for a single-ingredient product that you're getting clean 5-HTP. It's a genuine plus on the source/purity axis. It's just not enough, on its own, to overcome the value gap to the 120-count picks or the certification gap to Thorne.
03Out-competed on value by the 120-count leaders
The clearest reason Jarrow ranks where it does is the value math: at ~$0.25 per capsule across only 60 capsules, it costs more per serving than NOW (~$0.18) and Doctor's Best (~$0.17), both of which come in 120-count bottles — and Doctor's Best adds the B6/C cofactors at that lower price. For the same clean 100 mg Griffonia dose, the leaders simply give you more for less.
04Plain capsule — no cofactors, no enteric coating
Like NOW, Jarrow is single-ingredient 5-HTP with no added B6/C and no enteric coating. That's fine, but it means the buyers who'd benefit from those features are better served elsewhere: Doctor's Best (#2) or Solaray (#5) for cofactors, Solaray (#5) for the enteric coating that helps sensitive stomachs. Jarrow's appeal is the clean, HPLC-verified capsule and the brand name — not extra functionality.
05Brand pedigree doesn't change the safety rule
A respected legacy brand and an HPLC purity callout guarantee the quality of what's in the capsule — not interaction safety. The core caution is unchanged: 5-HTP raises serotonin and must not be combined with antidepressants (SSRIs/SNRIs), MAOIs, triptans, tramadol, or other serotonergic drugs without a clinician's sign-off, because of serotonin-syndrome risk. If you take any of those or have a medical condition, clear it with your doctor first.
Pros & cons, no sugar-coating
Pros
- Clean 100 mg Griffonia-sourced dose from a respected legacy brand
- HPLC purity verification noted on the label — a transparency plus
- Vegan, Non-GMO, and allergen-friendly
- Reliable, well-tolerated, and consistent batch to batch
- A perfectly sound buy if it's available at a good price
Cons
- Only 60 count and ~$0.25/cap — out-competed on value by NOW (#1) and Doctor's Best (#2)
- No B6/C cofactors and not enteric-coated
- HPLC purity verification is not full third-party certification (Thorne, #6, is)
A good clean capsule that wins no category — fine, but rarely the best choice.
Jarrow Formulas 5-HTP is a genuinely solid product: a clean 100 mg Griffonia capsule from a trusted legacy brand, with an HPLC purity callout that's a nice transparency touch. If it's the bottle in front of you at a good price, you can buy it with confidence — there's no flaw to flag, and the standard starting dose is exactly right. The reason it sits at #9 is simply that the picks above out-compete it on their own terms. For value, NOW (#1) and Doctor's Best (#2) give you the same clean 100 mg dose across 120-count bottles for similar or less money — and Doctor's Best adds the B6/C cofactors. For the cleanest hypoallergenic label, Pure Encapsulations (#3). For certified testing, Thorne (#6). For a sensitive stomach, the enteric-coated Solaray (#5). Jarrow is the good generalist that loses to a specialist in every lane. And whichever 5-HTP you choose, the non-negotiable holds: do not combine it with antidepressants or other serotonergic drugs without a clinician's sign-off. Start at one capsule with food, and pick Jarrow specifically when its brand or HPLC verification is what appeals to you.
Check Jarrow Formulas · 100 mg 5-HTP, HPLC-verified · 60 veg capsules on AmazonIf this doesn’t fit — try these
NOW Supplements 5-HTP 100 mg
9.4/10The same clean single-ingredient 100 mg dose, but 120 capsules at a lower cost per serving — the better value default.
See it on the list →Doctor's Best 5-HTP with B6 & C
9.1/10Matches Jarrow's quality, adds the B6/C cofactors, and costs less per capsule across a 120-count bottle — the smarter value buy.
See it on the list →Thorne 5-HTP
8.1/10Steps above Jarrow's HPLC verification with genuine third-party certification plus B6 — the pick if testing assurance is what you want.
See it on the list →Sources & further reading
- Shaw 2002 (Cochrane)Shaw K, Turner J, Del Mar C · 2002 · Cochrane Database of Systematic Reviews · PMID 12169147
Tryptophan and 5-hydroxytryptophan for depression
Of 108 studies on 5-HTP/tryptophan for depression, only 2 met the quality bar; pooled they favored 5-HTP/tryptophan over placebo, but the authors stressed the evidence was insufficient. The honest anchor for the mood claim.
- Cangiano 1992Cangiano C, Ceci F, Cascino A, et al. · 1992 · The American Journal of Clinical Nutrition · PMID 1384305
Eating behavior and adherence to dietary prescriptions in obese adult subjects treated with 5-hydroxytryptophan
Double-blind RCT, 20 obese subjects, 5-HTP 900 mg/day: significant weight loss, reduced carbohydrate intake, early satiety. Behind the appetite/weight use case — small study, high dose.
- Cangiano 1998Cangiano C, Laviano A, Del Ben M, et al. · 1998 · International Journal of Obesity and Related Metabolic Disorders · PMID 9705024
Effects of oral 5-hydroxy-tryptophan on energy intake and macronutrient selection in non-insulin dependent diabetic patients
In overweight NIDDM patients, oral 5-HTP decreased energy intake and produced weight loss. Reinforces the appetite/satiety mechanism in a second small clinical population.
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