Penn Herb Wellness Guide

Casein Protein for Sports & Fitness Find Products

Also indexed as:Milk Protein, Protein (Casein), Protein (Milk)
Casein Protein
Casein Protein: Main Image

Why Do Athletes Use It?*

Some athletes say that using casein protein improves weight training results by providing a steady supply of amino acids over several hours.

What Do the Advocates Say?*

Protein is necessary for building and repairing muscle, and this is especially important for bodybuilders. All types of protein, including casein, provide the body with amino acids. However, compared with other protein supplements, casein is slowly digested, resulting in a slower yet more prolonged rise in blood levels of amino acids, so some fitness professionals believe it may help support muscle growth and strength gains in weight-training programs.
*Athletes and fitness advocates may claim benefits for this supplement based on their personal or professional experience. These are individual opinions and testimonials that may or may not be supported by controlled clinical studies or published scientific articles.

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The information presented by TraceGains is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires December 2025.