A drugstore protein powder designed to deliver slow-digesting overnight support for muscle growth and repair, Optimum Nutrition Casein Protein Powder. You can wake up feeling less sore and enjoy steadier hunger control until breakfast. But is an overnight-only shake the best choice for your training routine?
⚡ At a Glance
- • Protein Release: Slow and steady flow of amino acids overnight to support recovery
- • Best for: Evening supplementation and resistance trainers seeking overnight repair
- • Not ideal for: Those who need fast-digesting post-workout protein or plant-based alternatives
Micellar casein supplies a slow, steady flow of amino acids overnight. Fortified with zinc and magnesium to support immune health and normal protein synthesis.
Overnight muscle repair – Thanks to slow-digesting micellar casein
Micellar casein provides 24 g of protein per serving and releases amino acids gradually over several hours, according to the product information.
Sustained amino acid delivery supports growth and maintenance of muscle mass while the body is fasting overnight.
Longer satiety through the night – With a low-sugar, slow-release formula
A slow-digesting protein combined with a low sugar content reduces the speed of gastric emptying, and user feedback highlights prolonged fullness.
You are less likely to wake hungry, making it easier to stick to calorie goals and morning routines.
Recovery and support for training – With added zinc and magnesium
Zinc contributes to a healthy immune system and magnesium supports normal protein synthesis, as stated in the product information.
Added micronutrients complement the protein dose, helping to support general recovery alongside muscle repair.
✨ The 4 Key Reasons for Optimum Nutrition Casein Protein Powder
- 24 g protein per serving — Boosts overnight amino acid availability for muscle repair
- Fortified with zinc and magnesium — Supports immune system and protein synthesis while you sleep
- Low sugar formula — Minimises unnecessary calories and helps steady blood sugar overnight
- Excellent mixability and creamy taste — Makes a smooth shake that blends easily with water
📋 Technical Details at a Glance
- Category: Protein powder / Drugstore supplement
- Protein per serving: 24 g
- Protein type: Micellar casein (slow-digesting)
- Essential amino acids: 10 g naturally occurring essential amino acids per serving
- Fortified with: Zinc and magnesium
❓ Frequently Asked Questions
Q: How much protein is in each serving?
A: Each serving contains 24 g of premium micellar casein protein, as stated in the product information.
Q: When should it be taken to get overnight benefits?
A: Take one heaped scoop with about 300 ml of cold water before bed; the slow-digesting protein supplies a steady flow of amino acids through the night.
Q: Does it include any vitamins or minerals for recovery?
A: Yes, the formula is fortified with zinc, which contributes to a healthy immune system, and magnesium, which supports normal protein synthesis.
🏆 Our Verdict
Ideal for evening and overnight supplementation for resistance trainers who want sustained amino acid delivery while sleeping. Slow-digesting micellar casein paired with zinc and magnesium makes a convenient, low-sugar option to support muscle repair and general recovery. Regular use is a sensible long-term addition to a training plan for those prioritising overnight recovery and appetite control.
