24g clear whey isolate with 3.25g leucine per scoop
Core Nutritionals Iso Clear is a clear whey isolate protein that's all about getting you the aminos you need in a light, tasty drink instead of a heavy shake. Sticking with your protein routine is huge, and this one makes it easy because it doesn't bog you down. Each 30.2g scoop gives you 24g protein, barely any carbs or fat, and the natural amino spread you'd expect from whey isolate.
Leucine is the star here at 3,250mg per scoop. That's the amino that kicks off muscle building by flipping the switch on mTOR, the pathway that starts protein synthesis. Studies show 2-3g is what most people need to get that going strong, and this hits it solid.
You've got a solid base of essential aminos too. Isoleucine at 1,960mg and valine at 1,750mg round out the BCAAs. Isoleucine helps with muscle building and getting glucose into your muscles, while valine teams up to fight fatigue and aid recovery. Lysine is strong at 2,920mg, helping with overall protein synthesis, tissue repair, and making carnitine. Threonine at 2,150mg, phenylalanine at 870mg, methionine at 650mg, histidine at 460mg, and tryptophan at 520mg make this a full protein, not just some amino mix.
The non-essentials show it's real whey. Aspartic acid at 3,220mg and glutamic acid at 5,400mg are high, just like in natural whey. Alanine comes in at 1,
Core Iso Clear by Core Nutritionals contains 17mg Calcium, a standard dose for muscle recovery and growth.
Key Highlights
- 24g protein per 30.2g scoop — that's a solid protein punch with low carbs and fats. Great for cutting or keeping things clean after workouts, and it delivers real recovery without extras you don't need.
- 3,250mg leucine — this is the big one for muscle growth. It fires up mTOR to start building and repairing muscle, and this dose is right in the sweet spot from what the research shows.
- 1,960mg isoleucine plus 1,750mg valine — a legit BCAA setup in a full protein, not some hyped-up isolate. They help with recovery, team up with leucine for muscle building, and cut down on that tired feeling from training.
- 2,920mg lysine — a solid amount of this essential amino that boosts protein synthesis and helps with tissue repair. It also supports carnitine production, making this a complete recovery protein.
- Full essential amino acid spectrum — threonine, methionine, phenylalanine, histidine, tryptophan, and the BCAAs are all listed out. Leucine starts the muscle-building process, but these others are what your body uses to actually get it done.
- 5,400mg glutamic acid and 3,220mg aspartic acid — these are naturally high in whey isolate, showing this is the real deal, not some funky fortified stuff.
- 520mg cystine — not the flashiest, but it matters. It helps with cysteine levels, which your body uses to make glutathione, the top antioxidant for fighting cell stress.
- 314mg potassium — a nice touch for a clear protein that's meant to refresh. It helps with muscle pumps, nerve signals, and staying hydrated, especially after sweaty workouts.
Core Iso Clear by Core Nutritionals contains 17mg Calcium, a standard dose for muscle recovery and growth.
Who Is This For?
- Physique folks cutting calories but needing protein to hold onto muscle. 24g protein and 3.25g leucine pack a punch, and the clear form is easy when you're not hungry.
- Lifters who skip creamy shakes post-workout. This gives full whey aminos in a light drink, so you actually use it when it matters most.
- Athletes in heat or big sweats wanting protein with some electrolyte help. 314mg potassium supports hydration and muscle function without overdoing it.
- Bodybuilders chasing hypertrophy who know leucine counts. 3,250mg hits the spot for muscle synthesis, making this more than just a light drink.
- Busy types bridging meals without stomach issues. Fast-digesting whey in clear form fits at work, on the go, or right after lifting.
- Guys eating clean but wanting reliable post-workout protein. The full amino list shows it's legit, not some mystery blend.
How to Use
Mix 1 scoop with 10-16 ounces of cold water, shake it up, and let any foam chill for a sec. Cold water in a shaker gives the best light, refreshing feel. Best time is right after training for that quick leucine boost without gut heaviness. Or use it between meals or in the morning when food's not an option.
A full scoop works for most because 24g protein and 3.25g leucine make it count for recovery. Half scoop if you're smaller or adding to a meal, but full gets you over the leucine line. No need to avoid food, but taking it solo keeps it fast. Stack with creatine, carbs after hard sets, or real meals later. Use it daily — no cycling. Keep it sealed in a cool spot for best mixing.
What to Expect
Minutes 0-5: right away, you notice it's not thick or heavy — more like a flavored drink when mixed cold. Minutes 5-20: whey isolate digests fast, so aminos hit quick without weighing you down. Minutes 20-60: no energy rush here; it's just efficient protein getting into your system. Hours 1-4: aminos support repair and tide you over to your next meal. Days 1-7: you start using it more because it's easy. Weeks 2-4: that habit means better protein intake, quicker recovery, and a solid routine.
Key Ingredients
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Leucine — Triggers the muscle-building signal with every full scoop
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Isoleucine — 1960mg — Supports recovery and muscle glucose uptake after hard training
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Valine — 1750mg — Completes the BCAA backbone for full-spectrum recovery support
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Lysine — 2920mg — Strengthens complete-protein recovery beyond just BCAA marketing
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Threonine — 2150mg — Adds meaningful essential amino support for tissue rebuilding
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Potassium — 314mg — Supports hydration, nerve signaling, and muscle contraction
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Cystine — 520mg — Feeds sulfur amino acid and antioxidant recovery pathways
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Methionine — 650mg — Provides sulfur amino support inside a complete whey matrix
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Histidine — 460mg — Rounds out essential amino coverage for true complete protein
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Glycine — 440mg — Contributes to collagen and glutathione precursor pools
Core Iso Clear by Core Nutritionals contains 17mg Calcium, a standard dose for muscle recovery and growth.
Frequently Asked Questions
How much protein does Core Nutritionals Iso Clear provide per scoop?
Each 30.2g scoop provides 24g of protein. That is a strong protein yield for a clear whey isolate and leaves very little room in the scoop for extra carbs or fats.
Why does the 3,250mg leucine content matter in Iso Clear?
Leucine is the amino acid most responsible for activating mTOR, the pathway that initiates muscle protein synthesis. At 3.25g per scoop, Iso Clear comfortably reaches the intake range commonly used to trigger a strong anabolic signal in most adults.
Is this just a BCAA drink or a complete protein?
It is a complete protein. In addition to 3,250mg leucine, it provides the full essential amino acid spectrum including 1,960mg isoleucine, 1,750mg valine, 2,920mg lysine, and the rest of the EAAs needed to actually build and repair muscle tissue.
When should I take Iso Clear?
The best use case is within 0-60 minutes after training, when you want a fast-digesting, light-feeling protein source. It also works well between meals or first thing in the morning if you want protein without the heaviness of a traditional shake.
What makes a clear whey isolate different from regular whey protein?
A clear whey isolate is designed to drink more like a juice-style beverage than a creamy milkshake. You still get whey’s fast digestion and leucine-rich amino profile, but in a lighter, more refreshing format that many people find easier to use consistently.
Does Iso Clear contain any electrolyte support?
Yes, it includes 314mg potassium per serving. That is not a full hydration formula, but it is a useful amount for supporting fluid balance, nerve signaling, and muscle contraction around training.
Can I stack Iso Clear with creatine?
Absolutely. Iso Clear handles the fast post-workout protein feeding, while standalone creatine monohydrate adds phosphocreatine support for strength, power output, and long-term training performance.
Is this a good protein for cutting?
Yes. The combination of 24g protein, low carbs, low fat, and a high-leucine amino profile makes it especially useful during calorie deficits when you want to preserve muscle without adding extra calories or a heavy shake texture.
Is Iso Clear suitable for beginners?
Yes, because it is a straightforward protein product rather than a harsh stimulant formula. Beginners benefit from the simplicity: a full recovery-oriented protein dose with transparent amino disclosure and easy post-workout usability.
Does this product appear to use a proprietary blend?
No. The formula is fully disclosed with individual amino acid amounts listed, which is a major transparency advantage over products that hide key details behind proprietary labeling.
