MuscleMeds Carnivor Mass Chocolate Peanut Butter
At a glance
Summary
MuscleMeds Carnivor Mass scores 28/100. The hero protein is hydrolyzed beef protein isolate — 50 g per serving from a non-dairy animal source, with bonus creatine, BCAAs, and L-glutamine. But the iSpike carbohydrate complex is built on micronised maltodextrin and waxy maize for a 720-calorie blood-sugar spike, and the rest of the formula stacks sucralose + acesulfame potassium, hydrolyzed beef gelatin, natural and artificial flavors, and silicone. Independent third-party lab testing (Consumer Reports, January 2024) detected 1.21 mcg lead per serving. Owned by MuscleMeds Performance Technologies.
Contaminants 4
Source: Consumer Reports January 2024
Lead 1.21 mcg per serving Moderate
Detected at a moderate level — a meaningful fraction of health-based exposure limits. Worth factoring in if this product is used regularly. No safe level of lead exposure exists per CDC, AAP, and WHO; chronic ingestion is associated with lowered IQ, neurodevelopmental harm, and cardiovascular and kidney effects.
Independent third-party testing.
Cadmium 1.67 mcg per serving Moderate
A moderate level of cadmium — elevated enough to be a real sourcing concern; cleaner-tested options exist.
Consumer Reports January 2024 detected 1.67 mcg cadmium per serving.1 mcg/day.
Arsenic 3.58 mcg per serving High
A high level of arsenic — a significant sourcing/quality concern relative to what clean supply chains achieve.
Consumer Reports January 2024 detected 3.58 mcg arsenic per serving.
Mercury not detected Not detected
Not detected — below the laboratory's detection limit. This is the strictest possible result: no measurable amount was found.
Consumer Reports January 2024 reported mercury below the lab's threshold of detection — no mercury measurable in this product.
Key ingredients 15
Micronised Maltodextrin & Waxy Maize (iSpike Complex)Very Bad
Two high-glycemic-index fillers engineered to spike insulin. Provide the bulk of the 125 g carbohydrate / 720 calorie load with no meaningful nutritional benefit. Linked to gut microbiome disruption.
See more about Micronised Maltodextrin & Waxy Maize (iSpike Complex) →Natural and Artificial FlavorsBad
Synthetic chemical compounds with zero transparency on composition and no nutritional value.
See more about Natural and Artificial Flavors →Acesulfame PotassiumBad
Artificial sweetener (Ace-K) with limited long-term safety data. Often paired with sucralose to mask aftertaste — a double artificial sweetener load.
See more about Acesulfame Potassium →SucraloseBad
Chlorinated artificial sweetener linked to disruption of gut microbiome, potential insulin response issues, and generation of harmful chlorinated compounds during metabolism.
See more about Sucralose →Silicone (anti-foaming agent)Bad
Industrial anti-foaming agent. No nutritional value and unusual to see in a consumer protein product.
See more about Silicone (anti-foaming agent) →Hydrolyzed Beef GelatinNeutral
Collagen-derived protein source supplementing the beef isolate. Incomplete amino acid profile (low in tryptophan) but non-dairy and animal-source.
See more about Hydrolyzed Beef Gelatin →Cocoa (Processed with Alkali)Neutral
Dutch-processed cocoa has reduced flavanol and antioxidant content compared to natural cocoa.
See more about Cocoa (Processed with Alkali) →SaltNeutral
Sodium for flavor balance; minimal contribution to total sodium intake.
See more about Salt →L-LeucineGood
Part of BCAAs. Free-form branched-chain amino acids supporting muscle protein synthesis and recovery.
See more about L-Leucine →L-ValineGood
Part of BCAAs. Free-form branched-chain amino acids supporting muscle protein synthesis and recovery.
See more about L-Valine →L-IsoleucineGood
Part of BCAAs. Free-form branched-chain amino acids supporting muscle protein synthesis and recovery.
See more about L-Isoleucine →L-GlutamineGood
Conditionally essential amino acid supporting recovery and gut health.
See more about L-Glutamine →Medium Chain Triglycerides (MCT)Good
Coconut-derived MCTs that are rapidly absorbed for energy. A genuinely beneficial fat source in a high-calorie mass gainer.
See more about Medium Chain Triglycerides (MCT) →Hydrolyzed Beef Protein IsolateVery Good
Non-dairy animal-source protein with a complete amino acid profile and high bioavailability comparable to whey. Hydrolyzed for faster absorption. Lactose-free and cholesterol-free. The genuine standout ingredient.
See more about Hydrolyzed Beef Protein Isolate →Creatine MonohydrateVery Good
Most-researched ergogenic supplement on the market. Robustly supports strength, power output, and lean mass gains. A genuinely beneficial inclusion in a mass gainer.
See more about Creatine Monohydrate →Processing
Ultra-Processed Foods
Get the full breakdown in the Scout appTake Scout shopping
Scan any product to see lab results, healthy alternatives, and your personalized analysis.
Download on theApp Store GET IT ONGoogle PlayAmazon pricing & content
Amazon price as of . Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED “AS IS” AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.