Amino acids
Glycine
The smallest amino acid – about a third of collagen is glycine. Your body uses it to build collagen and as a calming messenger in the nerves.
54 products from US online stores, sorted by what 3 g of glycine costs – not by the price per pack.
9¢Lowest cost
per 3 g glycine
- Prices checked Nov 1, 2026, US
- No paid placements
What does 3 g mean?
- glycine per serving in most of the products we checked
- 0.3–3 gglycine per serving in most of the products we checked
- 3 g is a fixed amount to compare by: half of the 54 products we checked have up to 1 g per serving, the other half more.
- There’s no official daily amount for glycine.
We compare by 3 g only so products line up – it’s not a recommendation. Not medical advice.
Where products miss quality points
How the 54 products score
- Very good 90+: 2
- Good 75+: 52
- Fair 60+: 0
- Low under 60: 0
- have no seal from an independent testing program
- 96%have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 8 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 sizes in one list can affect the results – big packs usually cost less per 3 g. Pick a size above to compare packs that are alike.
54 products · cheapest per 3 g glycine first
- Rank 1
Micro Ingredients
Glycine Powder, Unflavored
Powder
85Good qualityCountry not stated9¢per 3 g
Lowest
- Pack
- $29.991 kg (2.2 lb)1,000 servings
- Glycine per serving
- 1 gin 1 g
- Pack lasts
- 333 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 2
Micro Ingredients
L-Glycine Powder
Powder
85Good qualityCountry not stated9¢per 3 g
Lowest
- Pack
- $29.991,000 servings
- Glycine per serving
- 1 g
- Pack lasts
- 333 daysif you take 3 g a day
microingredients.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 3
Best Naturals
Glycine Powder
Powder
80Good qualityMade in USA9.2¢per 3 g
3% more
- Pack
- $13.99454 g (1 lb)454 servings
- Glycine per serving
- 1 gin 1 g
- Pack lasts
- 151 daysif you take 3 g a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 4
Best Naturals
Glycine Powder
Powder
80Good qualityPacked in USA9.6¢per 3 g
7% more
- Pack
- $14.56454 g (1 lb)454 servings
- Glycine per serving
- 1 gin 1 g
- Pack lasts
- 151 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 5
Best Naturals
Betaine Anhydrous Trimethylglycine (TMG) Pure Powder 1 Pound
Powder
80Good qualityMade in USA9.9¢per 3 g
10% more
- Pack
- $14.99454 g (1 lb)227 servings
- Glycine per serving
- 2 gin 2 g
- Pack lasts
- 151 daysif you take 3 g a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 6
BulkSupplements
Glycine Powder
Powder
80Good qualityCountry not stated$0.11per 3 g
17% more
- Pack
- $34.97333 servings
- Glycine per serving
- 3 g
- Pack lasts
- 333 daysif you take 3 g a day
bulksupplements.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 7
Vitamatic
Glycine Powder Pouch
Powder
80Good qualityCountry not stated$0.11per 3 g
20% more
- Pack
- $17.99498 g (1.1 lb)166 servings
- Glycine per serving
- 3 gin 3 g
- Pack lasts
- 166 daysif you take 3 g a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 8
Micro Ingredients
Glycine Powder, Unflavored
Powder
85Good qualityCountry not stated$0.12per 3 g
33% more
- Pack
- $19.99500 servings
- Glycine per serving
- 1 g
- Pack lasts
- 166 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 9
NOW Foods
Glycine, Pure Powder
Powder
80Good qualityPacked in USA$0.12per 3 g
35% more
- Pack
- $18.37454 g (1 lb)151 servings
- Glycine per serving
- 3 gin 3 g
- Pack lasts
- 151 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 10
Source Naturals
Glycine Powder
Powder
80Good qualityCountry not stated$0.13per 3 g
49% more
- Pack
- $10.15227 g (8 oz)227 servings
- Glycine per serving
- 1 gin 1 g
- Pack lasts
- 75 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 11
Nutricost
Glycine, Unflavored
Powder
85Good qualityPacked in USA$0.15per 3 g
61% more
- Pack
- $21.95454 g (1 lb)151 servings
- Glycine per serving
- 3 gin 3 g
- Pack lasts
- 151 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 12
BulkSupplements
Glycine Powder
Powder
80Good qualityCountry not stated$0.16per 3 g
81% more
- Pack
- $26.97166 servings
- Glycine per serving
- 3 g
- Pack lasts
- 166 daysif you take 3 g a day
bulksupplements.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 13
Nature's Life
Glycine Powder
Powder
80Good qualityCountry not stated$0.17per 3 g
87% more
- Pack
- $22.39400 g (14.1 oz)400 servings
- Glycine per serving
- 1 gin 1 g
- Pack lasts
- 133 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 14
Best Naturals
Glycine 1000 mg
Capsules
80Good qualityMade in USA$0.22per 3 g
141% more
- Pack
- $12.99180 capsules
- Glycine per serving
- 1 gin 1 capsule
- Pack lasts
- 60 daysif you take 3 capsules (3 g) a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 15
Swanson Vitamins
Glycine Powder
Powder
80Good qualityCountry not stated$0.22per 3 g
145% more
- Pack
- $16.69227 g (8 oz)227 servings
- Glycine per serving
- 1 gin 1 g
- Pack lasts
- 75 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 16
Swanson Vitamins
Glycine Powder
Powder
80Good qualityCountry not stated$0.22per 3 g
145% more
- Pack
- $16.69227 g (8 oz)227 servings
- Glycine per serving
- 1 gin 1 g
- Pack lasts
- 75 daysif you take 3 g a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 17
BulkSupplements
Glycine Capsules
Capsules
80Good qualityCountry not stated$0.23per 3 g
159% more
- Pack
- $20.97360 capsules90 servings
- Glycine per serving
- 3 gin 4 capsules
- Pack lasts
- 90 daysif you take 4 capsules (3 g) a day
bulksupplements.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 18
Vitamatic
Glycine
Capsules
80Good qualityMade in USA$0.27per 3 g
200% more
- Pack
- $17.99300 capsules100 servings
- Glycine per serving
- 2 gin 3 capsules
- Pack lasts
- 60 daysif you take 5 capsules (3.33 g) a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 19
BulkSupplements
Glycine Powder
Powder
80Good qualityCountry not stated$0.28per 3 g
208% more
- Pack
- $22.9783 servings
- Glycine per serving
- 3 g
- Pack lasts
- 83 daysif you take 3 g a day
bulksupplements.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 20
NOW Foods
Glycine, 1,000 mg
Capsules
80Good qualityMade in USA$0.29per 3 g
220% more
- Pack
- $24.00250 capsules83 servings
- Glycine per serving
- 3 gin 3 capsules
- Pack lasts
- 83 daysif you take 3 capsules (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 21
Force Factor
Glycine
Capsules
80Good qualityMade in USA$0.30per 3 g
233% more
- Pack
- $9.98100 capsules33 servings
- Glycine per serving
- 3 gin 3 capsules
- Pack lasts
- 33 daysif you take 3 capsules (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 22
Vitamatic
Glycine
Capsules
80Good qualityCountry not stated$0.30per 3 g
233% more
- Pack
- $19.99300 capsules100 servings
- Glycine per serving
- 2 gin 3 capsules
- Pack lasts
- 60 daysif you take 5 capsules (3.33 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 23
Carlson
Glycine Powder
Powder
80Good qualityCountry not stated$0.30per 3 g
233% more
- Pack
- $49.90499 g (1.1 lb)250 servings
- Glycine per serving
- 2 gin 2 g
- Pack lasts
- 166 daysif you take 3 g a day
carlsonlabs.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 24
Carlson
Glycine Powder, Free Form Amino Acid
Powder
80Good qualityCountry not stated$0.32per 3 g
254% more
- Pack
- $10.63100 g (3.5 oz)50 servings
- Glycine per serving
- 2 gin 2 g
- Pack lasts
- 33 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 25
Life Extension
Glycine, 1,000 mg
Capsules
80Good qualityCountry not stated$0.36per 3 g
300% more
- Pack
- $12.00100 capsules
- Glycine per serving
- 1 gin 1 capsule
- Pack lasts
- 33 daysif you take 3 capsules (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 26
Carlson
Glycine Powder
Powder
80Good qualityCountry not stated$0.38per 3 g
317% more
- Pack
- $12.50100 g (3.5 oz)50 servings
- Glycine per serving
- 2 gin 2 g
- Pack lasts
- 33 daysif you take 3 g a day
carlsonlabs.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 27
Nutricost
L-Glycine, 1,000 mg
Capsules
85Good qualityMade in USA$0.40per 3 g
343% more
- Pack
- $15.95120 capsules
- Glycine per serving
- 1 gin 1 capsule
- Pack lasts
- 40 daysif you take 3 capsules (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 28
Double Wood Supplements
Glycine Supplement
Capsules
80Good qualityCountry not stated$0.40per 3 g
343% more
- Pack
- $19.95300 capsules150 servings
- Glycine per serving
- 1 gin 2 capsules
- Pack lasts
- 50 daysif you take 6 capsules (3 g) a day
doublewoodsupplements.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 29
Double Wood Supplements
Glycine
Capsules
80Good qualityCountry not stated$0.40per 3 g
344% more
- Pack
- $19.99300 capsules150 servings
- Glycine per serving
- 1 gin 2 capsules
- Pack lasts
- 50 daysif you take 6 capsules (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 30
NutraBio
Glycine Powder
Powder
85Good qualityMade in USA$0.40per 3 g
344% more
- Pack
- $19.99150 g (5.3 oz)150 servings
- Glycine per serving
- 1 gin 1 g
- Pack lasts
- 50 daysif you take 3 g a day
nutrabio.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 31
Nutricost
L-Glycine Capsules
Capsules
85Good qualityCountry not stated$0.45per 3 g
399% more
- Pack
- $17.97120 capsules
- Glycine per serving
- 1 gin 1 capsule
- Pack lasts
- 40 daysif you take 3 capsules (3 g) a day
nutricost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 32
Source Naturals
Glycine
Capsules
80Good qualityCountry not stated$0.50per 3 g
453% more
- Pack
- $16.57200 capsules100 servings
- Glycine per serving
- 1 gin 2 capsules
- Pack lasts
- 33 daysif you take 6 capsules (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 33
ProHealth Longevity
Pure Glycine, 1,000 mg
Capsules
80Good qualityCountry not stated$0.50per 3 g
454% more
- Pack
- $19.95120 capsules
- Glycine per serving
- 1 gin 1 capsule
- Pack lasts
- 40 daysif you take 3 capsules (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 34
Micro Ingredients
Glycine
Capsules
80Good qualityMade in USA$0.50per 3 g
455% more
- Pack
- $19.99240 capsules60 servings
- Glycine per serving
- 2 gin 4 capsules
- Pack lasts
- 40 daysif you take 6 capsules (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 35
Metabolic Maintenance
Glycine Powder
Powder
80Good qualityCountry not stated$0.52per 3 g
484% more
- Pack
- $35.00200 servings
- Glycine per serving
- 1 g
- Pack lasts
- 66 daysif you take 3 g a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 36
Source Naturals
Glycine, 500 mg
Capsules
80Good qualityCountry not stated$0.54per 3 g
498% more
- Pack
- $8.97100 capsules50 servings
- Glycine per serving
- 1 gin 2 capsules
- Pack lasts
- 16 daysif you take 6 capsules (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 37
Solaray
Glycine, 1,000 mg
Capsules
80Good qualityCountry not stated$0.55per 3 g
511% more
- Pack
- $10.9960 capsules
- Glycine per serving
- 1 gin 1 capsule
- Pack lasts
- 20 daysif you take 3 capsules (3 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 38
Toniiq
Glycine
Capsules
85Good qualityCountry not stated$0.58per 3 g
541% more
- Pack
- $29.97240 capsules120 servings
- Glycine per serving
- 1.3 gin 2 capsules
- Pack lasts
- 48 daysif you take 5 capsules (3.25 g) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 39
BulkSupplements
Glycine Powder
Powder
80Good qualityCountry not stated$0.64per 3 g
606% more
- Pack
- $20.9733 servings
- Glycine per serving
- 3 g
- Pack lasts
- 33 daysif you take 3 g a day
bulksupplements.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 40
Swanson Vitamins
Glycine
Capsules
80Good qualityCountry not stated$0.65per 3 g
621% more
- Pack
- $6.4960 capsules
- Glycine per serving
- 0.5 gin 1 capsule
- Pack lasts
- 10 daysif you take 6 capsules (3 g) a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
Good to know
- Fact
- 10,542%more per 3 g for the most expensive product than for the cheapest.
- Fact
- 10,542%more per 3 g for the cheapest liquid 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