Dietary Supplement 20 g collagen science-backed. Typical Amino Acid Profile (Per 20g serving[Amino Acid profile may vary]): Alanine 1,800 mg; Arginine 1.587 mg; Aspartic Acid 1,127 mg; Glutamic Acid 1,933 mg; Glycine 4,740 mg; Histidine (Essential Amino Acids) 153 mg; Hydroxyproline 2,280 mg; Isoleucine (Essential Amino Acids) 304 mg; Leucine (Essential Amino Acids): 580 mg; Lysine (Essential Amino Acids) 760 mg; Methionine (Essential Amino Acids) 172 mg; Phenylalanine (Essential Amino Acids) 378 mg; Proline 2,720 mg; Serine 638 mg; Threonine (Essential Amino Acids) 386 mg; Tryptophan (Essential Amino Acids) 0 mg; Tyrosine 113 mg; Valine (Essential Amino Acids) 416 mg. Sustainably sourced. Grass-fed & pasture-raised. No added hormones. 12 servings. Joint & bone support. Glowing & hydrated skin. Feel the whole-body difference. Our collagen peptides provide essential building blocks to support your own collagen production. We only use collagen types I and III-the most common, naturally occurring types in the body-in effective, science-backed doses. These collagen types provide three amino acids that you won't find in meaningful amounts in other proteins. Why bulletproof collagen. Joint & bone support. Glowing & hydrated skin. Mixes in hot or cold drinks. Premium quality, thoughtfully sourced. We ethically source our collagen from grass-fed and pasture-raised cows without added hormones. bulletproof.com. Tel: 1-844-640-3003. (These statements have not been evaluated by the food and drug administration. This product is not intended to diagnose, treat, cure, or prevent any disease.)