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Moderate evidencePhysical performance

Whey Protein Hydrolysate

Whey partially broken into peptides before you drink it, which speeds absorption. As a protein source it works as well as any whey; the specific claim that pre-digestion adds recovery benefit rests on a few small trials.

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What the science says

  • Works as a protein source Strong evidence

    The muscle mass and strength benefit of supplemental protein during resistance training is established by a meta-analysis of 49 randomized trials. Hydrolysate delivers the same amino acids as intact whey, so this benefit carries over.

  • Faster recovery from muscle damage Moderate evidence

    A randomized trial in women found that whey protein hydrolysate accelerated recovery of muscle function after damaging exercise. A separate randomized trial in top-class orienteering runners also reported improved recovery measures, but both studies are small.

  • Advantage over regular whey Limited evidence

    No adequately powered head-to-head trial shows hydrolysate produces more muscle or strength than ordinary whey isolate or concentrate. The faster absorption is measurable, but its practical payoff in trained people is unproven.

Dosage & safety

Studied dose20–40 g per serving, same as other whey forms. Hydrolysate is sometimes taken closer to training because of its faster absorption, though the practical benefit of that timing is small.
SafetySame profile as other whey products: generally well tolerated, unsuitable for milk protein allergy. Hydrolysates taste noticeably bitter and are usually more expensive. High osmolality drinks can cause gastrointestinal discomfort during exercise in some people.

How to take it

TimingAny time that helps you reach your daily protein target; the faster absorption does not translate into a meaningful timing advantage.
With food?With or without food, though a very concentrated hydrolysate drink sits badly during exercise.
Worth knowingYou are paying a premium and accepting a bitter taste for a difference in absorption speed that does not show up in muscle outcomes.

Interactions

With medications

  • levodopa

    A protein load competes with levodopa for absorption and brain uptake. separate the shake from your levodopa dose by at least 1 hour

Well-established interactions only — this is not a complete list. Always tell your doctor and pharmacist what you take.

Frequently asked questions

Is whey hydrolysate better than whey isolate?

No adequately powered trial shows whey protein hydrolysate produces more muscle or strength than ordinary whey isolate or concentrate, so the evidence for an advantage is limited. Hydrolysate absorbs faster, but that has not shown up in muscle outcomes.

Does whey protein hydrolysate speed up recovery?

Whey protein hydrolysate has moderate evidence for faster recovery of muscle function after damaging exercise, from two small randomised trials, one in women and one in orienteering runners. As a protein source, whey hydrolysate works as well as any whey for muscle gain.

How much whey protein hydrolysate should I take?

Take 20–40 g of whey protein hydrolysate per serving, the same as other whey forms, at any time that helps you reach your daily protein target. Separate it from levodopa by at least 1 hour.

Why is whey hydrolysate bitter?

Whey protein hydrolysate is pre-broken into peptides, which gives it a noticeably bitter taste, and it usually costs more. Very concentrated hydrolysate drinks can also cause stomach discomfort during exercise.

Scientific references

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