Plasma Amino Acid Concentrations After the Ingestion of Dairy and Collagen Proteins, in Healthy Active Males

Alcock RD, Shaw GC, Tee N, Burke LM · Frontiers in Nutrition

Preclinicalcounts toward this tier

Collagen proteins produced far higher plasma glycine peaks than dairy (683 vs 260 umol/L, p < .0001); dairy gave higher leucine. Bone broth was the weakest tested source. Shows bioavailability of collagen amino acids, not any joint benefit.

Population: Healthy recreationally active males; acute feeding study with 180-min serial blood sampling
Intervention: 20 g servings of various dairy and collagen proteins, or 300 mL bone broth, after an overnight fast
Limitations: Small acute pharmacokinetic study; abstract does not describe randomization; surrogate (plasma amino acids) only.

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3 entries reference this study

Bone broth
Foods & Nutrition → Collagen from food · key study
ANECD.Anecdotal
Dietary collagen & glycine
Foods & Nutrition → Collagen from food · key study
PRECL.Preclinical
Gelatin + vitamin C before exercise
Foods & Nutrition → Collagen from food
PROM.Promising