Glycine is a simple amino acid sold most often as capsules or bulk powder. It is popular for sleep quality and nighttime recovery, and the clearest supplement convention is 3 grams before bed. TrueServing uses a 3 g daily reference dose because that amount appears in human sleep research and on common product labels. Glycine is different from magnesium glycinate, zinc glycinate, collagen, or amino acid blends; those products may contain glycine as part of another compound or protein source but are not standalone glycine supplements. The biggest comparison difference is usually format: powders tend to be much cheaper per gram than capsules. Products below are ranked by cost at your chosen daily dose.
Read our Glycine price comparison article for tips on what to look for when buying glycine.
| # | Product | 30-day cost | Supply | Sticker | |
|---|---|---|---|---|---|
| 1 |
Horbäach Glycine Powder 3 lbs | Free Form Supplement | Unflavored Powder | Vegetarian, Non-GMO, Gluten Free
Horbäach Store
|
$0.66 | 453d | $29.99 | View on Amazon |
| 2 |
Gya Tea Co Glycine Powder 0.33lb (5.29 oz) - Unflavored & Gluten-Free, Naturally Sweet, Water Soluble Pure Glycine Powder for Restful & Evening Rituals - No Added Sugar, Non-GMO, No Additives
Gya Tea Co Store
|
$0.70 | 428d | $9.99 | View on Amazon |
| 3 |
PURE ORIGINAL INGREDIENTS Glycine Powder, 5 lb, No Magnesium or Rice Fillers, Lab Verified
PURE ORIGINAL INGREDIENTS Store
|
$0.82 | 755d | $49.29 | View on Amazon |
| 4 |
Micro Ingredients Glycine Powder, 1KG (2.2 Pounds), Glycine 1000mg Per Serving, Water Soluble and Product of USA
Micro Ingredients Store
|
$0.87 | 333d | $28.99 | View on Amazon |
| 5 |
Source Naturals Glycine, for Protein Systhesis and Energy Generation*, 227 Grams - 8 oz Powder
Source Naturals Store
|
$1.09 | 76d | $8.24 | View on Amazon |
| 6 |
Best Naturals Glycine Powder 1 LB - Neurotransmitter & Relaxation Support
Best Naturals Store
|
$1.12 | 151d | $16.99 | View on Amazon |
| 7 |
Micro Ingredients Glycine Powder, 500 g (1.1 Pounds), Glycine 1000mg Per Serving, Water Soluble
Micro Ingredients Store
|
$1.14 | 167d | $18.99 | View on Amazon |
| 8 |
PURE ORIGINAL INGREDIENTS Glycine Power, 1 lb, Non-GMO, Non-Essential Amino Acid
PURE ORIGINAL INGREDIENTS Store
|
$1.57 | 151d | $18.99 | View on Amazon |
| 9 |
Nature's Life Glycine Powder | 400 g
Nature's Life Store
|
$1.68 | 133d | $22.39 | View on Amazon |
| 10 |
Vitamatic Glycine Powder – 3,000 mg Per Serving, Free-Form Amino Acid Supplement, Unflavored, 17.6 oz (500 g), Non-GMO, Gluten Free.
Vitamatic Store
|
$1.81 | 166d | $9.99 | View on Amazon |
| 11 |
Pure Original Ingredients Glycine Powder (8oz) Non-GMO, Non-Essential Amino Acid
PURE ORIGINAL INGREDIENTS Store
|
$2.40 | 75d | $15.49 | View on Amazon |
| 12 |
Puregen Labs Glycine 1000mg [High Potency] 100 Vegetarian Capsules, Promotes Healthy Rest | No Harmful Additives | Non-GMO, NO Gluten and Dairy -100 Servings
P Puregen Labs Store
|
$3.00 | 33d | $9.99 | View on Amazon |
| 13 |
Glycine Powder (2 lbs) - Promotes Restful Sleep, Muscle Energy and Strength, Memory and Cognition Support (Resealable Bag)
TradeKing Store
|
$3.18 | 377d | $23.95 | View on Amazon |
| 14 |
PURE ORIGINAL INGREDIENTS Glycine Powder (4oz) Non-GMO, Non-Essential Amino Acid
PURE ORIGINAL INGREDIENTS Store
|
$3.24 | 38d | $10.49 | View on Amazon |
| 15 |
Life Extension Glycine, 1000 mg, Amino Acid that Promotes Healthy Sleep, Gluten-Free, Non-GMO, Vegetarian, 100 Capsules
Life Extension Store
|
$3.60 | 33d | $12.00 | View on Amazon |
| 16 |
Vitamatic Glycine Supplement, 2000mg Per Serving, 300 Count, Non-GMO, Gluten Free
Vitamatic Store
|
$3.60 | 100d | $17.99 | View on Amazon |
| 17 |
DEAL SUPPLEMENT Glycine Powder 3g Per Serving, 500g (1.1lb), Sleep Support* | Free-Form Glycine Amino Acid Supplement | Unflavored, Water-Soluble | Non-GMO, Gluten Free
DEAL SUPPLEMENT
|
$3.61 | 166d | $19.99 | View on Amazon |
| 18 |
NOW Foods Supplements, Glycine Pure Powder, Promotes Restful Sleep*, Neurotransmitter Support*, 1-Pound
NOW Foods Store
|
$3.65 | 151d | $18.37 | View on Amazon |
| 19 |
NutraBio Glycine Powder - Glycine Supplement- Free Form Amino Acid Supplement - 1000mg Serving - 150g, 150 Servings
NutraBio Store
|
$4.00 | 50d | $19.99 | View on Amazon |
| 20 |
Source Naturals Glycine, Dietary Supplement - 500 mg - 200 Capsules
Source Naturals Store
|
$4.37 | 33d | $14.57 | View on Amazon |
| 21 |
ProHealth Pure Glycine, 1000 mg Per Capsule | Promotes Restful Sleep & Morning Wakefulness, Supports Relaxation | Clinically Studied | Third-Party Tested | 120 Capsules
ProHealth Store
|
$4.99 | 40d | $19.95 | View on Amazon |
| 22 |
Metabolic Maintenance Glycine Powder - 1000 mg Glycine - Calm and Detox Support - Hypoallergenic Formula - Unflavored Powder - 200 Servings - 7 oz
Metabolic Maintenance Store
|
$5.25 | 67d | $35.00 | View on Amazon |
| 23 |
Carlson Glycine Powder 2000 mg, Amino Acid Supplement for Energy and Muscle Support, 3.53 oz (100 g)
Carlson Store
|
$6.38 | 33d | $10.63 | View on Amazon |
| 24 |
Carlson Labs Glycine Powder, 100g
Carlson Store
|
$6.38 | 33d | $10.63 | View on Amazon |
| 25 |
BulkSupplements.com Glycine Powder - Glycine Supplements, Amino Acid Supplement - Unflavored & Gluten Free, 3g per Serving, 250g (8.8 oz) (Pack of 1)
BulkSupplements Store
|
$6.50 | 83d | $17.97 | View on Amazon |
| 26 |
THORNE - Glycine - Supports Relaxation, Stress Management, Detoxification & Healthy Muscle Function* - Amino Acid Supplement - Third-Party Certified - Gluten, Dairy & Soy-Free - 250 Capsules
THORNE Store
|
$7.44 | 42d | $31.00 | View on Amazon |
| 27 |
BulkSupplements.com Glycine Capsules - Amino Acid Supplement, 3000mg - Gluten Free, 4 Capsules per Serving, 360 Count (Pack of 1)
BulkSupplements Store
|
$7.66 | 90d | $22.97 | View on Amazon |
| 28 |
Glycine 2,000mg Per Serving, 240 Veggie Capsules | Free Form | Double Strength Amino Acids | Restful Sleep and Neurotransmitter Support Supplements | Non-GMO, Gluten Free
Micro Ingredients Store
|
$8.00 | 40d | $15.99 | View on Amazon |
| 29 |
Now Supplements, Glycine 1,000 mg Free-Form, Neurotransmitter Support*, 250 Veg Capsules
NOW Foods Store
|
$8.81 | 83d | $24.37 | View on Amazon |
| 30 |
Horbäach Glycine 3000mg Supplement | 100 Powder Capsules | Non-GMO, Gluten Free
Horbäach Store
|
$9.08 | 33d | $9.99 | View on Amazon |
| 31 |
NOW Foods Glycine 1000mg, Free-Form Pharmaceutical Grade, Neurotransmitter Support*, Promotes restful Sleep*, Gluten Free, Vegan, Kosher 200 Vegetarian Capsules (Pack of 2)
NOW Foods Store
|
$9.20 | 132d | $40.50 | View on Amazon |
| 32 |
Now Foods Glycine 1000mg, Free-Form Pharmaceutical Grade, Neurotransmitter Support*, Promotes restful Sleep*, Gluten Free, Vegan, Kosher 200 Vegetarian Capsules (Pack of 1)
NOW Foods Store
|
$10.23 | 66d | $22.50 | View on Amazon |
| 33 |
NOW Foods Supplements, Glycine 1,000 mg Free-Form, Neurotransmitter Support*, 100 Veg Capsules
NOW Foods Store
|
$10.56 | 33d | $11.62 | View on Amazon |
| 34 |
Premium Glycine Powder 250g | Amino Acids Supplement for Post Workout Muscle Recovery, Digestion, Sleep Aid + More - Vegan, Additive-Free, Third-Party Tested | Centenarius Nutrition
Centenarius Nutrition Store
|
$10.84 | 83d | $29.99 | View on Amazon |
| 35 |
BulkSupplements.com Glycine Powder - Glycine Supplements, Amino Acid Supplement - Unflavored & Gluten Free, 3g per Serving, 100g (3.5 oz) (Pack of 1)
BulkSupplements Store
|
$16.34 | 33d | $17.97 | View on Amazon |
| 36 |
Glycine Supplement – 100% Pure 3g Glycine Powder for Sleep, Calm & Recovery – USA Made Sleep Aid for Men & Women – Non-GMO & Completely Natural - 6.3Oz for 60 Servings
Nocturna Store
|
$29.99 | 30d | $29.99 | View on Amazon |
| 37 |
Metabolic Maintenance Glycine Sticks - 3 g Glycine - Calm & Sleep Support - Single Dose Powder Sticks - No Fillers or Preservatives - 30 Servings - 30 Count
Metabolic Maintenance Store
|
$41.00 | 30d | $41.00 | View on Amazon |
This is the current ranking surface for Glycine. It recalculates cost per month from product price, Supplement Facts active amount, servings per container, and the dose you enter above.
40 active products have enough price and label data to calculate cost before display filters; 37 rows are currently shown in the ranked table. The current review floor for this category is 25+ reviews before any large-category and duplicate/bulk filtering.
At 3 g/day, visible products range from $0.66-$41.00/mo with a $4.00/mo median midpoint and a 62.1x low-to-high spread.
Confirm the product is plain glycine and read the serving in grams. Labels reviewed for this update included powders, capsules, tablets, and sleep formulas where glycine can be paired with magnesium, GABA, melatonin, or other calming ingredients.
Powders usually dominate on price because the comparison dose is 3 g/day. Capsules and tablets can be convenient, but they often require several units per day and raise the monthly cost.
Do not compare a tiny glycine amount in a sleep blend with a full 3 g powder serving. For powders, check whether the scoop is weight-defined and whether the container has enough servings for a month at the target dose.
Glycine has moderate evidence from small human sleep studies around 3 g before bed, while broader longevity and metabolic claims are less settled. TrueServing compares labeled glycine cost at 3 g/day.
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