Casein protein is a slow-digesting dairy protein that makes up roughly 80 percent of the protein found in cow's milk, valued for its sustained amino acid release over several hours. Research suggests that this gradual absorption profile may support muscle protein synthesis during prolonged periods without food, such as overnight recovery, making it a popular choice among athletes and active individuals looking to complement their nutrition. Studies indicate that micellar casein, which retains its natural structure, and casein hydrolysate, a partially broken-down form for faster uptake, each offer distinct advantages depending on individual goals related to muscle recovery and satiety. Emerging evidence also points to casein's potential role in weight management, as its slow digestion may help promote feelings of fullness between meals.
Compare this supplementResearch suggests that consuming casein protein before sleep may support muscle recovery by elevating blood amino aci...
View studies →Research suggests that adequate protein intake plays a meaningful role in supporting gut health and nutritional resil...
View studies →Research suggests that casein protein, when compared to other protein sources in the context of weight management, sh...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Powder | 20–40 g | Daily | Muscle recovery and protein synthesis, typically consumed before sleep | Common in clinical trials on pre-sleep protein ingestion and muscle protein synthesis |
| Powder | 20–30 g | Daily | Nutritional support and meeting daily protein requirements | Common in clinical trials on dietary protein supplementation and nitrogen balance |
| Powder | 30–40 g | As needed | Pre-sleep supplementation for overnight muscle protein synthesis | Based on RCTs by Res et al. and Snijders et al. studying nocturnal protein intake |
| Powder | 25–35 g | Daily | Weight management and satiety support due to slow-digesting protein properties | Based on RCTs examining casein's slower gastric emptying and appetite regulation |