Muscle Milk Pro Series Protein Powder Review: Knockout Chocolate, 2 lb (11 Servings), 50g Protein, 3g Sugar, 20 Vitamins & Minerals, NSF Certified for Sport – Post-Workout Recovery & Muscle Growth (2026)

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Muscle Milk Pro Series Protein Powder in Knockout Chocolate is a high-performance supplement formulated to support muscle recovery, growth, and maintenance. Each 2 lb canister delivers approximately 11 servings with a premium blend of fast- and slow-releasing proteins to sustain amino acid levels and fuel muscle-building processes.

Key nutritional highlights (per serving):

  • 50g high-quality protein from a combination of whey and casein sources, providing immediate and prolonged amino acid delivery for optimal muscle repair and growth.
  • Low 3g sugar content, making it suitable for low-carb or controlled-sugar diets.
  • Excellent source of 20 vitamins and minerals to support energy metabolism, immune function, and overall daily nutrition.

Performance and usage benefits:

  • Helps satisfy hunger while delivering essential amino acids critical for muscle building and post-workout recovery.
  • Versatile and easy-to-mix: Dissolves smoothly in 10–16 fl oz of water (use a shaker bottle for best consistency; sold separately). Easily incorporates into coffee, smoothies, oatmeal, or baked goods for a convenient protein boost at breakfast, post-workout, or as an on-the-go snack.
  • NSF Certified for Sport: Independently tested and screened for over 270 banned substances by NSF International, ensuring safety for athletes and competitive sports.

Quality and formulation:

  • Blend of fast- and slow-digesting proteins supports sustained amino acid availability and muscle mass maintenance.
  • Made by Muscle Milk with packaging that may vary.
  • Compact canister dimensions (5.63 × 5.63 × 7.8 inches) for easy storage.

Pros:

  • High 50g protein per serving for serious muscle recovery and growth support
  • Delicious Knockout Chocolate flavor with low 3g sugar
  • Fortified with 20 vitamins and minerals for added nutritional value
  • NSF Certified for Sport — trusted for athletes and banned-substance safety
  • Mixes easily and versatile for shakes, recipes, or daily nutrition
  • Blend of fast- and slow-release proteins for extended amino acid benefits
  • Strong customer satisfaction (4.5/5 from 8,061 reviews) and top-ranked in protein powder blends (#4 category)
  • Excellent value with 11 servings in a 2 lb canister

Cons:

  • Packaging may vary (different label designs reported)
  • Shaker bottle not included (recommended for smooth mixing)
  • Chocolate flavor may be rich/sweet for those preferring milder tastes
  • Higher protein density may not suit very low-calorie or low-protein needs

This protein powder is ideal for athletes, gym-goers, bodybuilders, or anyone focused on muscle recovery, growth, and daily protein intake. It performs well as a post-workout shake, meal replacement, or protein addition to meals, especially for those needing NSF-certified quality for training or competition.

Overall rating: 8.8/10 Muscle Milk Pro Series Knockout Chocolate offers high protein potency, great taste, low sugar, vitamin fortification, and sport-certified safety in a versatile, reliable formula — a strong choice for workout recovery and everyday nutrition.