Best L-Tyrosine Supplements 2026: Cost per Effective Dose
Top pick for L-Tyrosine: Nutricost L-Tyrosine Powder, 1,000 mg per serving (500 g) — 1000mg L-tyrosine per 1 g scoop, None (third-party lab tested), $0.05/day. Our best-value pick.
Registry check · L-Tyrosine
Does anyone independently verify L-Tyrosine supplements?
Not one of these 11 products is listed by NSF, USP or Informed Sport as a verified product. Yet 5 of them advertise “third-party testing” without naming the certifier that did it — wording no public registry can confirm or deny. A factory-level claim such as “cGMP” audits the plant, not the L-Tyrosine bottle you would actually receive.
11 checked against all 5,317 US NSF, USP and Informed Sport listings, 2026-08-25. Full method and limitations.
What 11 L-Tyrosine labels show
Priced per day, these L-tyrosine products run $0.02 to $0.20 — a 10× gap between the cheapest and dearest L-tyrosine here, across 7 brands.
Which row that favours is not obvious: BulkSupplements BulkSupplements N-Acetyl L-Tyrosine (NALT) Powder, 400 mg per serving (500 g) is cheapest per serving at $0.02, but its serving sits below the median here, so part of that price gap is simply a smaller capsule.
All L-Tyrosine Supplements Compared
| Product | Brand | Dose / Serving | Cost / Day | Certification (as labelled) | Pick | Buy |
|---|---|---|---|---|---|---|
| BulkSupplements N-Acetyl L-Tyrosine (NALT) Powder, 400 mg per serving (500 g) | BulkSupplements | 400mg NALT / 400 mg scoop | $0.02 | None (third-party lab tested) | Buy | |
| BulkSupplements L-Tyrosine Powder, 500 mg per serving (250 g) | BulkSupplements | 500mg L-tyrosine / ~1/8 tsp (500 mg) | $0.04 | None (third-party lab tested) | Buy | |
| Nutricost L-Tyrosine Powder, 1,000 mg per serving (500 g) | Nutricost | 1000mg L-tyrosine / 1 g scoop | $0.05 | None (third-party lab tested) | Best Value | Buy |
| Nutricost L-Tyrosine 500 mg (180 Capsules) | Nutricost | 500mg L-tyrosine / 1 capsule (500 mg) | $0.08 | None (ISO-lab tested) | Buy | |
| NOW L-Tyrosine 500 mg (120 Veg Capsules) | NOW Foods | 500mg L-tyrosine / 1 capsule (500 mg) | $0.09 | None (cGMP, UL-tested) | Buy | |
| Nutricost N-Acetyl L-Tyrosine (NALT) 350 mg (120 Capsules) | Nutricost | 350mg NALT / 1 capsule (350 mg) | $0.11 | None | Buy | |
| Horbaach L-Tyrosine 1,000 mg (250 Capsules) | Horbaach | 1000mg L-tyrosine / 2 capsules (1,000 mg) | $0.14 | None | Buy | |
| NOW L-Tyrosine 750 mg (90 Veg Capsules) | NOW Foods | 750mg L-tyrosine / 1 capsule (750 mg) | $0.14 | None (cGMP) | Buy | |
| Jarrow Formulas L-Tyrosine 500 mg (100 Capsules) | Jarrow Formulas | 500mg L-tyrosine / 1 capsule (500 mg) | $0.15 | None | Buy | |
| Double Wood L-Tyrosine 1,000 mg per serving (120 Capsules) | Double Wood | 1000mg L-tyrosine / 2 capsules (1,000 mg) | $0.17 | None (third-party tested) | Buy | |
| Solaray L-Tyrosine 500 mg (100 Capsules) | Solaray | 500mg L-tyrosine / 1 capsule (500 mg) | $0.20 | None | Buy |
Our Picks
Best Value: Nutricost L-Tyrosine Powder, 1,000 mg per serving (500 g)
1000mg L-tyrosine per 1 g scoop. None (third-party lab tested). $0.05/day. 500 servings per container at $26.95.
The shelf · L-Tyrosine
Capsules cost 3.7× what powder does for the same L-Tyrosine
The molecule is the same either way; the premium buys encapsulation. Across these 11 L-Tyrosine products that gap runs from 2¢ a day (BulkSupplements N-Acetyl L-Tyrosine (NALT) Powder, 400 mg per serving (500 g)) to 20¢ (Solaray L-Tyrosine 500 mg (100 Capsules)), and BulkSupplements N-Acetyl L-Tyrosine (NALT) Powder, 400 mg per serving (500 g) is the cheapest powder of the 3 here if you will actually weigh a dose.
Method: the 11 L-Tyrosine products above, compared on label facts — serving size, servings per container, form, price. Not a dosing recommendation.
The evidence · L-Tyrosine
What the published reviews of L-Tyrosine concluded
- Tyrosine supplementation for phenylketonuria. · The Cochrane database of systematic reviews, 2021
“From the available evidence no recommendations can be made about whether tyrosine supplementation should be introduced into routine clinical practice. Further randomised controlled studies are required to provide more evidence.”
- Oral L-Tyrosine Supplementation Improves Core Temperature Maintenance in Older Adults. · Medicine and science in sports and exercise, 2020
“These results indicate that L-tyrosine supplementation improves Tc maintenance in response to acute cold exposure in an older population.”
- Failure of oral tyrosine supplementation to improve exercise performance in the heat. · Medicine and science in sports and exercise, 2014
“These data indicate that acute tyrosine administration did not influence self-paced endurance exercise performance in the heat. Plasma tyrosine availability is apparently not a key determinant of fatigue processes under these conditions.”
- Randomised controlled trial of tyrosine supplementation on neuropsychological performance in phenylketonuria. · Archives of disease in childhood, 1998
“Tyrosine supplementation of this type does not appear to alter neuropsychological performance in individuals with phenylketonuria.”
Method: PubMed searched in humans for systematic reviews, meta-analyses and randomised trials with L-Tyrosine in the title; these 4 of the 4 that qualified are shown with the authors’ own conclusion quoted rather than summarised. What it cannot tell you: whether L-Tyrosine will work for you — each of these reports an average across trials published 1998–2021, and null findings are shown here as readily as positive ones.
How these 11 L-Tyrosine products were ranked
Not one of these 11 L-tyrosine products could be confirmed in the NSF, USP or Informed Sport registries, so verification separates none of them and the ranking falls to cost per day at the labelled serving. Commission does not enter it: the rate is the same whichever L-tyrosine you buy. Full methodology.