The overall rating for casein protein is 2.8 out of 3 meaning there is evidence that this supplement lives up to its expectations. Using this supplement should lead to positive results.

What is casein protein?

Casein is commonly referred to as the slow or nighttime protein because of its relatively slow digestion time compared to other options. It's perhaps the second most popular protein after the king: whey. If whey protein is the most popular, is casein good for anything? Read More

Table of Contents

  1. Articles
  2. Simple Report
  3. Detailed Report
  4. Overall Effectiveness Rating
  5. Research Rating
  6. Products Containing Casein Protein
  7. Claim Ratings
  8. Dosing
  9. References


Casein Protein Simple Report

  • Supplement: Casein Protein
  • Supplement Category: proteins
  • Number of Products Containing Casein Protein: 52
  • Effectiveness Rating: 2.8 out of 3
  • Research Rating: 60 (above 80 indicates sufficient research)
  • Number of Studies: 8
  • Number of Claims: 4
  • Effective Dosage Range: 8 - 40 grams per day

Casein Protein Detailed Report

Overall Effectiveness Rating

The overall effectiveness rating for casein protein is 2.8 out of 3. This rating means the evidence is clear on the supplement's ability to deliver positive results. Using this supplement will lead to positive results. Note, this effectiveness rating is for casein protein as a whole; there are also individual ratings for the claims below.

Read more: What is the effectiveness rating?

Research Rating for Casein Protein

There are 8 studies in the database on casein protein; the research rating is 60. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating. Note, this research rating is for casein protein as a whole; there are also individual ratings for the claims below.

Read more: What is the research rating?

Products Containing Casein Protein

Products Names Amount of Casein Protein
Vapor One 150mg
Wrath Pump 250mg
Pump Serum 254mg
Vaso Grow 267mg
Vessel 254mg
Full list of all 52 products containing Casein Protein.

Claim Ratings

The overall ratings above are an average of the individual claim ratings below. Individual claims may have higher or lower ratings compared to the supplement's overall rating. For example, some supplements may have excellent backing for one claim, but be completely useless for another. Click on a claim below for more information.

Body Composition (weight, muscle, body fat) Claims Effectiveness Rating Research Rating
decrease body fat
increase muscle mass

Protein Synthesis Claims Effectiveness Rating Research Rating
increase protein synthesis

Performance Claims Effectiveness Rating Research Rating
increase strength


The Supplement Database includes 7 studies on casein protein dosing. These studies indicate an effective dose ranges from 8 to 40 grams per day, the average dose being 24.93 grams per day. For a more detailed dosing analysis visit: Supplement Dosing for Casein Protein.


Title of Study
Casein Protein Supplementation in Trained Men and Women: Morning versus Evening
Daytime and nighttime casein supplements similarly increase muscle size and strength in response to resistance training earlier in the day: a preliminary investigation
Hydrolyzed casein and whey protein meals comparably stimulate net whole-body protein synthesis in COPD patients with nutritional depletion without an additional effect of leucine co-ingestion
Ingestion of casein and whey proteins result in muscle anabolism after resistance exercise
Ingestion of whey hydrolysate, casein, or soy protein isolate: effects on mixed muscle protein synthesis at rest and following resistance exercise in young men
Protein Ingestion before Sleep Improves Postexercise Overnight Recovery
The effect of whey isolate and resistance training on strength, body composition, and plasma glutamine
The effects of protein and amino acid supplementation on performance and training adaptations during ten weeks of resistance training