The Claim

In healthy young adults, ingestion of 30 grams of free amino acids results in faster absorption and greater postprandial plasma amino acid availability compared to an equivalent amount of intact milk protein, with 76% of ingested phenylalanine appearing in circulation after free amino acids versus 59% after intact protein over a 6-hour period.

Source: Ingestion of Free Amino Acids Compared with an Equivalent Amount of Intact Protein Results in More Rapid Amino Acid Absorption and Greater Postprandial Plasma Amino Acid Availability Without Affecting Muscle Protein Synthesis Rates in Young Adults in a Double-Blind Randomized Trial

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
80score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Quantitative
1 study reviewed
In plain English

If you drink a mix of free amino acids instead of whole milk protein, your body absorbs them faster and more of them—especially phenylalanine—show up in your blood over six hours.

See the scientific wording

Ingestion of 30 grams of free amino acids causes more rapid absorption and greater postprandial plasma amino acid availability compared to an equivalent amount of intact milk protein in healthy young adults, with 76% of ingested phenylalanine released into circulation after free amino acids versus 59% after intact protein over a 6-hour period.

What the research says

1 study
  1. Study: Ingestion of Free Amino Acids Compared with an Equivalent Amount of Intact Protein Results in More Rapid Amino Acid Absorption and Greater Postprandial Plasma Amino Acid Availability Without Affecting Muscle Protein Synthesis Rates in Young Adults in a Double-Blind Randomized Trial

    The study found that taking amino acids in powder form leads to faster and higher levels in the blood compared to drinking milk protein, and more of the amino acid phenylalanine gets into the bloodstream—just like the claim says.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.