Casein Protein
The slower-digesting protein fraction of milk, releasing amino acids more gradually than whey.
Educational content only. This content is provided for general educational purposes only and is not medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before making decisions about your health, exercise, or nutrition. This page intentionally does not provide dosage guidance — speak to a doctor, pharmacist, or registered dietitian about what is appropriate for you.
What the evidence suggests
- Slower digestion profile
- Contributes to daily protein intake
Typical use
Often used in the evening or between meals due to its slower digestion.
Who may benefit
- People wanting a slower-digesting protein option
Who should avoid it
- People with milk protein allergy
Possible side effects
- Not suitable for those with milk allergy
- Can feel heavy or thick to drink
Safety notes
- Total daily protein remains the primary driver of results, not the specific protein type.
Frequently asked questions
Is casein better than whey before bed?
It digests more slowly, which is the usual rationale. In practice, meeting total daily protein matters more for most people.