Casein protein powder is keto-friendly, typically ~2–4g net carbs per 100g with ~80g protein. Unlike whey’s fast absorption, casein digests slowly for sustained amino acid release—great for nighttime or between-meal protein while maintaining ketosis.
Is Casein Protein Keto?

Casein protein powder is keto-friendly, typically ~2–4g net carbs per 100g with ~80g protein. Unlike whey’s fast absorption, casein digests slowly for sustained amino acid release—great for nighttime or between-meal protein while maintaining ketosis.
- Net carbs (100g)3g
- Protein (100g)80g
- Fat (100g)5g
- Keto verdictKeto-friendly
NUTRITION FACTS
Per 100g (raw)
Source: Nutritional databases and food labels
WHY IT'S KETO-FRIENDLY
- Low net carb content (~2–4g/100g) is highly keto-compatible
- Slow-digesting protein provides ~6–8 hours of amino acid release
- Complete amino acid profile supports muscle synthesis and recovery
- Ideal pre-bed or between meals to prevent overnight muscle breakdown
- Generally gentler glucose/insulin impact than fast-absorbing proteins
- Useful during intermittent fasting windows to preserve lean mass
HEALTH BENEFITS
- Complete protein with all nine essential amino acids
- Forms a stomach gel that may enhance satiety
- May contain casomorphins with calming effects for some individuals
- Supports muscle recovery and growth over extended periods
- Can reduce muscle protein breakdown during sleep
- Provides calcium and phosphorus for bone health
PREPARATION SUGGESTIONS
NIGHTTIME SHAKE
Blend with heavy-cream and keto sweetener before bed to sustain amino acid availability overnight.
PUDDING
Mix with almond-milk-unsweetened and rest 5–10 minutes to thicken; top with almonds and cacao nibs.
SLOW-RELEASE SHAKE
Blend with coconut-milk-full-fat and mct-oil for a steady-energy mid-day shake.
KETO BAKING
Use unflavored casein to add structure/protein to low-carb muffins, brownies, or pancakes.
POST-WORKOUT MIX
Combine with whey-protein (fast) for immediate + sustained amino delivery.
PEANUT BUTTER PROTEIN BARS
Stir with peanut-butter, coconut oil, and keto sweetener; chill into bars for easy snacks.