Other compounds

Phosphatidylserine

A fat-like building block of brain cells, made from soy or sunflower. Taken for memory and stress – studies are small.

41 products from US online stores, sorted by what 100 mg of phosphatidylserine costs – not by the price per pack.

5.2¢Lowest cost
per 100 mg phosphatidylserine

Prices checked Nov 1, 2026, US
No paid placements

What does 100 mg mean?

phosphatidylserine per serving in most of the products we checked: 100–300 mgphosphatidylserine per serving in most of the products we checked

100 mg is about one serving: half of the 41 products we checked have up to 100 mg per serving, the other half more.
There’s no official daily amount for phosphatidylserine.

We compare by 100 mg only so products line up – it’s not a recommendation. Not medical advice.

Where products miss quality points

How the 41 products score

Very good 90+: 3
Good 75+: 38
Fair 60+: 0
Low under 60: 0

have no seal from an independent testing program: 93%have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 5 whose label says “third-party tested”

The full 30 testing points need an independent test. Every supplement sold in the US is made under the FDA’s GMP rules – the maker checks its own products, which gives 10 points. A seal from a testing program like NSF, USP or Informed Choice means a lab outside the company checks that what’s inside matches the label. Most brands don’t take part. That doesn’t make a product bad – without a seal, a clean product still gets up to 80.

We find seals on the label and in NSF’s public lists. USP and Informed Choice don’t let us search their lists automatically, so a seal that’s only in their lists can be missing. How the score works

Pack size

Compare packs of a similar size.

All sizesmixed41 productsSmallup to 60 × 100 mg15 productsfrom $0.40Medium60–120 × 100 mg18 productsfrom $0.16Large120+ × 100 mg8 productsfrom 5.2¢

All sizes in one list can affect the results – big packs usually cost less per 100 mg. Pick a size above to compare packs that are alike.

Cost per 100 mgQualityPack price

41 products · cheapest per 100 mg phosphatidylserine first

Rank 1
BulkSupplements
Phosphatidylserine Powder
Powder
80Good qualityCountry not stated
5.2¢
per 100 mg
Lowest
Pack
$103.972,000 servings
Phosphatidylserine per serving
100 mg
Pack lasts
2,000 daysif you take 100 mg a day
bulksupplements.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 2
BulkSupplements
Phosphatidylserine Powder
Powder
80Good qualityCountry not stated
6.3¢
per 100 mg
21% more
Pack
$62.971,000 servings
Phosphatidylserine per serving
100 mg
Pack lasts
1,000 daysif you take 100 mg a day
bulksupplements.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 3
BulkSupplements
Phosphatidylserine Powder
Powder
80Good qualityCountry not stated
8¢
per 100 mg
54% more
Pack
$39.97500 servings
Phosphatidylserine per serving
100 mg
Pack lasts
500 daysif you take 100 mg a day
bulksupplements.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 4
Probase Nutrition
Phosphatidylserine Supplement
Capsules
80Good qualityCountry not stated
$0.12
per 100 mg
135% more
Pack
$21.99120 capsules60 servings
Phosphatidylserine per serving
300 mgin 2 capsules
Pack lasts
120 daysif you take 1 capsule (150 mg) a day
probasenutrition.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 5
Double Wood Supplements
Phosphatidylserine Supplement
Capsules
100Very good qualityCountry not stated
$0.13
per 100 mg
145% more
Pack
$22.95120 capsules60 servings
Phosphatidylserine per serving
300 mgin 2 capsules
Pack lasts
120 daysif you take 1 capsule (150 mg) a day
doublewoodsupplements.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 6
BulkSupplements
Phosphatidylserine Powder
Powder
80Good qualityCountry not stated
$0.14
per 100 mg
169% more
Pack
$27.97200 servings
Phosphatidylserine per serving
100 mg
Pack lasts
200 daysif you take 100 mg a day
bulksupplements.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 7
Toniiq
Phosphatidylserine 50%
Capsules
80Good qualityCountry not stated
$0.14
per 100 mg
178% more
Pack
$25.9790 capsules45 servings
Phosphatidylserine per serving
400 mgin 2 capsules
Pack lasts
90 daysif you take 1 capsule (200 mg) a day
toniiq.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 8
EVLution Nutrition
Phosphatidylserine
Capsules
80Good qualityMade in USA
$0.16
per 100 mg
199% more
Pack
$13.9960 capsules30 servings
Phosphatidylserine per serving
300 mgin 2 capsules
Pack lasts
60 daysif you take 1 capsule (150 mg) a day
evlnutrition.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 9
Primaforce
Phosphatidylserine
Capsules
85Good qualityCountry not stated
$0.19
per 100 mg
269% more
Pack
$22.99120 capsules30 servings
Phosphatidylserine per serving
400 mgin 4 capsules
Pack lasts
120 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 10
BulkSupplements
Phosphatidylserine Powder
Powder
80Good qualityCountry not stated
$0.23
per 100 mg
342% more
Pack
$22.97100 servings
Phosphatidylserine per serving
100 mg
Pack lasts
100 daysif you take 100 mg a day
bulksupplements.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 11
Doctor's Best
Phosphatidylserine with SerinAid 100 mg
Capsules
80Good qualityCountry not stated
$0.25
per 100 mg
381% more
Pack
$29.99120 capsules
Phosphatidylserine per serving
100 mgin 1 capsule
Pack lasts
120 daysif you take 1 capsule (100 mg) a day
drbvitamins.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 12
BulkSupplements
Phosphatidylserine Capsules
Capsules
80Good qualityCountry not stated
$0.27
per 100 mg
412% more
Pack
$23.96180 capsules30 servings
Phosphatidylserine per serving
300 mgin 6 capsules
Pack lasts
90 daysif you take 2 capsules (100 mg) a day
bulksupplements.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 13
California Gold Nutrition
Sunflower Phosphatidylserine, 100 mg
Capsules
80Good qualityCountry not stated
$0.29
per 100 mg
456% more
Pack
$34.67120 capsules
Phosphatidylserine per serving
100 mgin 1 capsule
Pack lasts
120 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 14
ProHealth Longevity
Phosphatidylserine
Capsules
85Good qualityCountry not stated
$0.31
per 100 mg
487% more
Pack
$54.95120 capsules60 servings
Phosphatidylserine per serving
300 mgin 2 capsules
Pack lasts
120 daysif you take 1 capsule (150 mg) a day
prohealth.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 15
Swanson Vitamins
Phosphatidylserine, 100 mg
Softgels
80Good qualityCountry not stated
$0.35
per 100 mg
582% more
Pack
$31.8990 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
90 daysif you take 1 softgel (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 16
Swanson Vitamins
Phosphatidylserine
Softgels
80Good qualityCountry not stated
$0.35
per 100 mg
582% more
Pack
$31.8990 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
90 daysif you take 1 softgel (100 mg) a day
swansonvitamins.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 17
Life Extension
PS Caps, 100 mg
Capsules
80Good qualityCountry not stated
$0.36
per 100 mg
593% more
Pack
$36.00100 capsules
Phosphatidylserine per serving
100 mgin 1 capsule
Pack lasts
100 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 18
Solgar
Phosphatidylserine, 200 mg
Softgels
80Good qualityCountry not stated
$0.39
per 100 mg
653% more
Pack
$46.9660 softgels
Phosphatidylserine per serving
200 mgin 1 softgel
Pack lasts
60 daysif you take 1 softgel (200 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 19
BulkSupplements
Phosphatidylserine Powder
Powder
80Good qualityCountry not stated
$0.40
per 100 mg
668% more
Pack
$19.9750 servings
Phosphatidylserine per serving
100 mg
Pack lasts
50 daysif you take 100 mg a day
bulksupplements.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 20
Natural Factors
PS, 100 mg
Softgels
80Good qualityMade in Canada
$0.43
per 100 mg
732% more
Pack
$51.88120 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
120 daysif you take 1 softgel (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 21
Swanson Vitamins
Phosphatidylserine Soy-Free Formula
Softgels
80Good qualityCountry not stated
$0.43
per 100 mg
733% more
Pack
$38.9990 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
90 daysif you take 1 softgel (100 mg) a day
swansonvitamins.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 22
Swanson Vitamins
Phosphatidylserine, 100 mg
Softgels
80Good qualityCountry not stated
$0.45
per 100 mg
771% more
Pack
$13.5930 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
30 daysif you take 1 softgel (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 23
Swanson Vitamins
Phosphatidylserine
Softgels
80Good qualityCountry not stated
$0.45
per 100 mg
771% more
Pack
$13.5930 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
30 daysif you take 1 softgel (100 mg) a day
swansonvitamins.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 24
Swanson Vitamins
Phosphatidylserine, Soy-Free Formula, 100 mg
Softgels
80Good qualityCountry not stated
$0.45
per 100 mg
775% more
Pack
$40.9490 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
90 daysif you take 1 softgel (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 25
Natural Factors
PS, 100 mg
Softgels
80Good qualityMade in Canada
$0.48
per 100 mg
824% more
Pack
$28.8160 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
60 daysif you take 1 softgel (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 26
Natural Factors
PS, Phosphatidylserine, 100 mg
Softgels
80Good qualityMade in Canada
$0.51
per 100 mg
887% more
Pack
$15.4030 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
30 daysif you take 1 softgel (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 27
Nature's Way
Phosphatidylserine, 100 mg
Softgels
80Good qualityPacked in USA
$0.57
per 100 mg
1,002% more
Pack
$34.3760 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
60 daysif you take 1 softgel (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 28
Natural Factors
Phosphatidylserine
Softgels
85Good qualityCountry not stated
$0.60
per 100 mg
1,053% more
Pack
$71.95120 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
120 daysif you take 1 softgel (100 mg) a day
naturalfactors.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 29
Jarrow Formulas
PS100, Phosphatidylserine, 100 mg
Capsules
80Good qualityCountry not stated
$0.63
per 100 mg
1,117% more
Pack
$75.89120 capsules
Phosphatidylserine per serving
100 mgin 1 capsule
Pack lasts
120 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 30
Natural Factors
Phosphatidylserine
Softgels
85Good qualityCountry not stated
$0.67
per 100 mg
1,181% more
Pack
$39.9560 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
60 daysif you take 1 softgel (100 mg) a day
naturalfactors.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 31
Jarrow Formulas
PS 100
Capsules
80Good qualityCountry not stated
$0.69
per 100 mg
1,225% more
Pack
$82.66120 capsules
Phosphatidylserine per serving
100 mgin 1 capsule
Pack lasts
120 daysif you take 1 capsule (100 mg) a day
jarrow.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 32
Natural Factors
Phosphatidylserine
Softgels
85Good qualityCountry not stated
$0.70
per 100 mg
1,243% more
Pack
$20.9530 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
30 daysif you take 1 softgel (100 mg) a day
naturalfactors.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 33
BrainMD
Neuro-PS
Capsules
80Good qualityCountry not stated
$0.73
per 100 mg
1,309% more
Pack
$32.9530 capsules
Phosphatidylserine per serving
150 mgin 1 capsule
Pack lasts
30 daysif you take 1 capsule (150 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 34
Jarrow Formulas
PS 100
Softgels
80Good qualityCountry not stated
$0.78
per 100 mg
1,407% more
Pack
$93.99120 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
120 daysif you take 1 softgel (100 mg) a day
jarrow.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 35
Integrative Therapeutics
Phosphatidylserine
Softgels
80Good qualityPacked in USA
$0.82
per 100 mg
1,479% more
Pack
$49.2560 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
60 daysif you take 1 softgel (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 36
Integrative Therapeutics
Phosphatidylserine
Softgels
80Good qualityPacked in USA
$0.82
per 100 mg
1,479% more
Pack
$49.2560 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
60 daysif you take 1 softgel (100 mg) a day
integrativepro.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 37
Nature's Way
Phosphatidylserine
Softgels
80Good qualityPacked in USA
$0.96
per 100 mg
1,743% more
Pack
$57.4960 softgels
Phosphatidylserine per serving
100 mgin 1 softgel
Pack lasts
60 daysif you take 1 softgel (100 mg) a day
naturesway.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 38
Designs For Health
PS 150, 150 mg
Capsules
80Good qualityCountry not stated
$1.00
per 100 mg
1,823% more
Pack
$89.9960 capsules
Phosphatidylserine per serving
150 mgin 1 capsule
Pack lasts
60 daysif you take 1 capsule (150 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 39
Thorne
Phosphatidylserine
Capsules
100Very good qualityMade in USA
$1.13
per 100 mg
2,080% more
Pack
$68.0060 capsules
Phosphatidylserine per serving
100 mgin 1 capsule
Pack lasts
60 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)
Checked Nov 1, 2026 · Label
Rank 40
Thorne
Phosphatidylserine
Capsules
100Very good qualityMade in USA
$1.13
per 100 mg
2,080% more
Pack
$68.0060 capsules
Phosphatidylserine per serving
100 mgin 1 capsule
Pack lasts
60 daysif you take 1 capsule (100 mg) a day
thorne.com (opens in a new tab)
Checked Nov 1, 2026 · Label

40 of 41 shown

Good to know

Fact: 2,497%more per 100 mg for the most expensive product than for the cheapest.
Fact: 582%more per 100 mg for the cheapest softgels than for the cheapest powder.

How we checked: one-time price for each size in the store’s US online shop, before sales tax and shipping, without subscriptions or coupons. Prices change often, so check the store before you buy. More on how we check

The amount we compare by only makes products comparable – it is not a dosage recommendation. Not medical advice.

How we calculate

Cost per dose = price ÷ (servings × amount per serving) × comparison amount. Example: $119.99 for 74 servings with 24 g of protein each is 1,776 g of protein. $119.99 ÷ 1,776 g × 30 g = $2.03 per 30 g of protein.

Found a mistake or a product we should add? Email us

Phosphatidylserine

What does 100 mg mean?

Where products miss quality points

Pack size