Sports Research® 100% Whey Protein Isolate Fruity Cereal - U.S. Sourced Protein Powder w/BCAAs - No Artificial Flavors or Gums- Informed Sport Tested · Gluten Free - 2lb Bulk Bag, 25 Servings

Clinical trials typically use 20–40g whey protein per serving is the established range for muscle protein synthesis. Sports Research 100% Whey Protein Isolate Fruity Cereal delivers 25g whey protein isolate + 6.9g BCAAs + 1,000mg L-Leucine per serving, which we classify as Full relative to that range.

See the "Also consider" section below for two alternatives. Choose based on form preference (Powder vs alternatives), dose adequacy, and third-party testing.

Yes — Informed Sport. Third-party testing verifies ingredient identity and label accuracy.

Yes — Amazon Subscribe & Save is available for this product. Enrolling locks in a recurring delivery at a reduced per-unit price.

Whey protein isolate has no significant drug interactions for healthy individuals. Those on antibiotics (quinolones or tetracyclines) should space supplementation 1-2 hours from medication as calcium in whey may mildly reduce drug absorption. Individuals with kidney disease or those on renal-protective medications should discuss high-protein supplementation with their physician before use.

Whey protein isolate is well tolerated in long-term clinical research for healthy adults. The isolate process removes most lactose, substantially reducing the GI side effects seen with concentrate forms. Very high total daily protein intakes (above 3g per kg bodyweight) have not shown harm in healthy adults but should be balanced with adequate hydration.

Whey isolate contains less than 1% lactose, making it significantly better tolerated than whey concentrate for lactose-sensitive individuals. The absence of xanthan gum and artificial sweeteners further reduces the GI irritation common in many flavored proteins. Those with true milk protein allergy (not lactose intolerance) should avoid all whey-based products.

Yes — this whey isolate is compatible with creatine, pre-workouts, omega-3s, and multivitamins. The added Vitamin D per scoop should be counted toward your total daily intake to avoid over-supplementation above 4,000 IU. Combining with other protein supplements in the same meal is generally unnecessary given the complete amino acid profile of whey.

Mix one scoop in 8-10 oz cold water or your preferred milk. Consume post-workout for optimal muscle protein synthesis, or at any time of day to meet protein targets. Do not rely solely on protein supplements — whole food sources should form the dietary base. Store sealed in a cool, dry environment.

Acute muscle protein synthesis begins within 1-3 hours of consumption. Cumulative lean mass and strength improvements require 4-8 weeks of consistent training combined with adequate daily protein intake. The added L-Leucine per scoop provides an immediate anabolic signaling boost above standard whey alone.