Core Nutritionals Brings Back ISO Whey Isolate in 1.5lb Bags — Fully Transparent and Straight to the Point

Core Nutritionals is bringing back a fan-favorite format — their ISO Whey Protein Isolate now returns in 1.5 lb bags, offering a smaller, cleaner option for people who want a high-quality daily protein without committing to a large tub.

The formula stays true to what made it popular in the first place: a straightforward isolate-based protein designed around purity, digestion, and label transparency rather than filler ingredients.

Each serving delivers 24g of protein at only 110 calories, keeping carbs and fats minimal while maintaining a full amino acid profile typical of a quality whey isolate. The ingredient list is intentionally tight — whey isolate as the primary protein source, cocoa or flavoring, sunflower lecithin for mixability, sea salt, xanthan gum, and sucralose. No unnecessary blends, no inflated protein sources, and no label dressing.

The amino acid profile confirms what you want to see from an isolate: strong leucine content and a complete EAA spectrum supporting muscle protein synthesis and recovery. Instead of adding extra amino acids to spike numbers, the protein derives its profile naturally from the whey itself — a key difference between premium isolate products and budget proteins.

Core is also leaning into variety with five dessert-style flavors:

• Chocolate Peanut Butter Cup

• Death By Chocolate

• Strawberries N’ Cream

• Frosted Vanilla Cupcake

• Frosted Cinnamon Bun

The 1.5 lb size fills an important gap in the market — ideal for trying flavors, travel, or rotating proteins without getting stuck with a large container.

Bottom Line

Core ISO doesn’t try to reinvent protein — it focuses on execution. Clean isolate, transparent label, complete amino profile, and simple formulation. Sometimes the best product is just the one that doesn’t overcomplicate things.