Core Nutritionals | Iso Clear | 30 Servings

Core Nutritionals Iso Clear is a clear whey isolate protein built around one simple formulation philosophy: deliver a full muscle-building amino acid payload in a lighter, more refreshing format than the standard creamy shake. That matters because compliance is underrated in sports nutrition. A protein can look good on paper, but if it feels heavy after training or sits poorly during a cut, people stop using it. Iso Clear solves that with a lean 30.2g scoop delivering 24g protein, minimal carbs and fat, and a naturally protein-rich amino acid spectrum consistent with whey isolate.

The most important number on this label is leucine: 3,250mg per scoop. Leucine is the primary nutrient signal for muscle protein synthesis through mTOR activation, and research consistently places roughly 2-3g leucine in the range needed to robustly trigger that anabolic signal in most adults. Iso Clear clears that threshold comfortably. In practical terms, this is the amino acid that tells muscle tissue it’s time to build and repair.

That leucine sits inside a strong essential amino acid backbone. Isoleucine is present at 1,960mg and valine at 1,750mg, completing the BCAA trio. Isoleucine contributes to muscle protein synthesis and has a unique role in supporting glucose uptake into skeletal muscle, while valine works alongside the other BCAAs in recovery and central fatigue management. Lysine is also notably strong at 2,920mg, supporting total protein synthesis, collagen-related tissue turnover, and carnitine production. Threonine at 2,150mg, phenylalanine at 1600mg, methionine at 650mg, histidine at 460mg, and tryptophan at 520mg round out the essential amino acid profile, making this a complete protein source rather than an isolated amino product.

The non-essential amino acids matter too because they reflect intact whey quality. Aspartic acid is high at 3,220mg and glutamic acid leads the profile at 5,400mg, both typical of whey’s naturally occurring structure. Alanine comes in at 1,600mg, glycine at 440mg, proline at 1,880mg, serine at 1,390mg, tyrosine at 820mg, cystine at 520mg, and arginine at 600mg. These are not “fortified” performance add-ons at standalone clinical doses; they are the amino architecture of the protein itself. Cystine contributes sulfur amino acid support and feeds into cysteine availability, which matters for glutathione synthesis. Glycine is below the standalone 3-5g range used in sleep or metabolic studies, but in the context of a complete protein it still contributes to connective tissue and antioxidant precursor pools.

Potassium at 314mg is a useful addition for a protein in a clear, hydration-friendly format. Potassium is the primary intracellular electrolyte responsible for membrane potential, nerve impulse conduction, and muscle contraction. This is not a full electrolyte product, but it does meaningfully support fluid balance and training-day usability, especially for people drinking this around sweat-heavy sessions.

From a synergy standpoint, the formula works because whey isolate already contains the system your body uses to recover: a leucine-rich essential amino acid matrix to initiate muscle protein synthesis, plus the remaining amino acids required to actually complete tissue repair. Leucine flips the switch; the rest of the essential amino acids supply the building blocks. Potassium complements that by supporting hydration status and neuromuscular function.

Transparency is a real strength here. There’s no proprietary blend, no amino spiking disclosed through inflated nitrogen tricks, and no attempt to disguise the amino profile. You can see exactly what kind of protein backbone you’re getting. Day 1, expect a light, easy-drinking protein source that feels far less dense than a standard whey shake. Over 2-4 weeks of consistent use, the real benefit is simpler but more important: better adherence to daily protein intake, stronger recovery support, and a reliable leucine hit every time you need to stimulate muscle repair.

How to Use Core Nutritionals | Iso Clear. (Cotton Candy)