MuscleMeds Carnivor Mass Chocolate Peanut Butter
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.
At a glance
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 13
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 →BCAAs (L-Leucine, L-Valine, L-Isoleucine)Good
Free-form branched-chain amino acids supporting muscle protein synthesis and recovery.
See more about BCAAs (L-Leucine, L-Valine, L-Isoleucine) →L-GlutamineGood
Conditionally essential amino acid supporting recovery and gut health.
See more about L-Glutamine →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) →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) →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) →Natural and Artificial FlavorsBad
Synthetic chemical compounds with zero transparency on composition and no nutritional value.
See more about Natural and Artificial Flavors →SaltNeutral
Sodium for flavor balance; minimal contribution to total sodium intake.
See more about Salt →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) →Processing
Ultra-Processed Foods
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