SupplementDuel

Whey Protein Isolate

Protein

The gold-standard fast-absorbing protein. 90%+ protein by weight, virtually lactose-free, ideal for muscle protein synthesis around workouts.

musclerecoveryfast-absorbingMPS
Typical dose
20–40 g per serving
Evidence
Strong (multiple RCTs / meta-analyses)
Onset time
Acute: 30–60 min absorption peak
Half-life
~1.5 hours
Forms
Powder
Source
animal
Best taken with
water or milk
Best time of day
post-workout
Bioavailability
5/5
Safety rating
5/5
Price per serving
$0.90
Vegan / GF / 3rd-party
✗ / ✓ / ✓
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Vetted brands, third-party testing, ships worldwide.

Common uses

  • • Post-workout recovery
  • • Muscle gain
  • • Protein top-up

Effect profile

Strength
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Muscle
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Energy
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Focus
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Mood
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Sleep
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Immunity
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Recovery
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Longevity
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Common side effects

  • • GI upset for lactose-sensitive (rare with isolate)
  • • Acne (high doses)

Avoid if

  • • Severe milk allergy

Drug interactions

  • • Levodopa (timing)

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Medical disclaimer

SupplementDuel is for educational purposes only and is not medical advice. Consult a physician before starting, stopping, or combining supplements.