Nutrient Database

Whey Protein

other

Approved

General information about nutrients. No diagnosis, no medical advice. If you take medication, are pregnant or have a medical condition, talk to your doctor before taking supplements.

Breaks IFBreaks water fastBreaks autophagy

Track your intake

Sign up to track your supplement intake, get warnings about upper limits, and optimize your timing.

Overview

Fast-absorbing dairy protein rich in leucine and BCAAs. Protein contributes to a growth in muscle mass.

Expert opinions

Dr. Peter Attia

Attia recommends a total protein intake of around 1.6 g and up to 2.2 g per kg body weight per day (0.8 to 1.0 g/lb), more than double the RDA of 0.8 g/kg. The figure refers to protein from all sources, not to this supplement alone.

Recommended dose: 1.6–2.2 g/kg body weight/day (total protein)

Source: Determining optimal protein intake from data, not dogmatism (peterattiamd.com) · as of 2025-08-23

Expert profiles summarise publicly available statements. The named people do not cooperate with Stackwell and have not authorised these summaries. Not medical advice.

Expert consensus: Strong

Most researched protein supplement. Isolate preferred for lactose-sensitive individuals. Typical servings are 20 to 40 g.