Best Phosphatidylserine
The best phosphatidylserine we track, ranked by real cost-per-dose — not paid placements. Across 23 brands, 1 are third-party tested in a public registry.
Updated October 2026prices checked what’s changed
How much does Phosphatidylserine cost?
Phosphatidylserine costs a median $0.33 per serving — the cheapest of the 26 we can price per dose is $0.07 per serving. Prices checked October 2026.
Ranked across 26 products · prices checked Oct 10, 2026
3rd-party testedTHORNE Phosphatidylserine, 100 mg per Capsule, 60 Capsules
NSF Certified for Sport brand at $1.13 per serving.
How we rank
We rank by cost-per-dose — price ÷ servings, normalized to the daily dose — so bottle sizes and strengths compare fairly. Prices are scraped at publication and re-checked when the catalog refreshes (see the “Prices checked” stamp above). There is no paid placement and no kickback for ordering. Full methodology · Editorial standards.
When cheapest ≠ best value
The cheapest bottle isn’t automatically the best value: a low per-bottle price usually just means fewer servings or a smaller dose per serving. That is exactly what cost per dose normalises, which is why the ranking above is ordered by it rather than by sticker price. A bigger bottle isn’t automatically cheaper per dose either — this list already ranks by cost per dose, so a larger count only wins if it truly costs less per serving. Compare Phosphatidylserine forms.
Our data on this: how much the big bottle saves per serving · the gummy tax · the form premium · the price spread.
Full ranking by cost per dose
Cost-per-serving normalizes price across bottle sizes — a 60-count and a 365-count compare fairly. Top 20 of 26 shown.
- See offer#1Best valueMicro Ingredients Phosphatidylserine 600 mg Per Serving
capsule · 600mg · 240 servings · $15.99
$0.07per serving - See offer$0.10per serving1.6× #1
- See offer$0.11per serving1.7× #1
- See offer$0.13per serving1.9× #1
- See offer$0.17per serving2.5× #1
- See offer$0.20per serving3.0× #1
- See offer$0.20per serving3.0× #1
- See offer$0.22per serving3.3× #1
- See offer$0.25per serving3.7× #1
- See offer$0.25per serving3.7× #1
- See offer$0.25per serving3.8× #1
- See offer$0.25per serving3.8× #1
- See offer$0.32per serving4.8× #1
- See offer$0.34per serving5.1× #1
- See offer$0.35per serving5.3× #1
- See offer$0.45per serving6.8× #1
- See offer$0.48per serving7.3× #1
- See offer$0.50per serving7.5× #1
- See offer$0.57per serving8.5× #1
- See offer$0.57per serving8.6× #1
See also: Phosphatidylserine basics · all best-value rankings · phosphatidylserine cost-per-dose breakdown
Phosphatidylserine brands we compare — which are third-party tested?
1 of the 23 brands ranked above appear in an independent certifier's own public registry. A certification confirms the label matches the contents — it says nothing about how well the supplement works, and an uncertified brand is not automatically worse.
- Thorne NSF Sport
- BIOTICS RESEARCH
- DEAL SUPPLEMENT
- Doctor's BEST
- Double Wood Supplements
- Dr. Maxwell
- Integrative Therapeutics
- Jarrow Formulas
- Leaping Lynx
- Micro Ingredients
- Natural BioScience
- Nature's Way
- NatureBell
- Number One Nutrition
- NusaPure
- Nutricost
- Piping Rock
- PROTOCOL FOR LIFE BALANCE
- Pure Encapsulations
- SuperSmart USA LLC
- Swanson
- We Like Vitamins
- Wellness Resources
Frequently asked
How much does Phosphatidylserine cost?+
The cheapest phosphatidylserine we track is $0.07 per serving ($15.99 for 240 servings), against a typical $0.33 per serving across the 26 we can price per dose — about $2.00 a month at the cheapest. That's real cost per dose from live Amazon US prices as of October 2026, not the sticker price.
What is the best-value Phosphatidylserine supplement?+
Micro Ingredients Phosphatidylserine 600 mg Per Serving — $0.07 per serving ($15.99 for 240 servings), the lowest cost-per-dose phosphatidylserine in our Amazon US catalog as of October 2026.
How much does Phosphatidylserine cost per day?+
The cheapest phosphatidylserine we track works out to $0.07 per serving, against a typical $0.33 per serving across the 26 we can price per dose. Retailers and review sites list a price and a serving size but rarely divide it out — this is what a day actually costs, as of October 2026.
What is the typical cost per dose for Phosphatidylserine?+
About $0.33 per serving across the 26 phosphatidylserine products we can price per dose (combination products are left out — their single label dose belongs to whichever ingredient the product is built around) — the cheapest we track is $0.07 per serving, with most falling between $0.20 and $0.57.
What is the highest-quality Phosphatidylserine supplement?+
Of the 23 phosphatidylserine brands ranked here, 1 hold a third-party certification we could verify in a public registry: Thorne (NSF Certified for Sport). Certification means an independent lab confirmed the label matches the contents and screened for contaminants — it does not rate how well the supplement works. The cheapest certified option is THORNE Phosphatidylserine, 100 mg per Capsule, 60 Capsules at $1.13 per serving.
Which Phosphatidylserine brands are third-party tested?+
Thorne — NSF Certified for Sport. We only count a brand as tested when it appears in the certifier's own public registry (USP Verified, NSF Certified for Sport, Informed Choice), never on a claim printed on the label. The remaining 22 brands on this page have no certification we could verify.
Which Phosphatidylserine is the top rated?+
We don't republish marketplace star ratings — they belong to the retailer, they move constantly, and a 4.6 average tells you nothing about what is in the capsule. The two things you can verify are what a dose costs and whether an independent lab checked the label. On both counts, THORNE Phosphatidylserine, 100 mg per Capsule, 60 Capsules stands out: NSF Certified for Sport certified at $1.13 per serving.
What dose of Phosphatidylserine do these supplements come in?+
The phosphatidylserine products we track range from 100mg to 1000mg per serving. We rank by cost per serving so you can compare value across strengths — check the label for the dose that suits you.
Independent testing
1 of 23 tracked Phosphatidylserine brands here are flagged as carrying independent third-party testing — a voluntary check of a product's identity, potency and contaminants by an outside lab. It's a quality signal, not a value or efficacy claim. Confirm any brand's current status on the official registries:
Testing status is self-reported by the brand or drawn from public certification and may change — always verify on the official registry before purchase.
References & sources
We link primary sources and paraphrase their findings — never copy their text, tables, or images. Cost-per-dose figures are our own first-party catalog data.