BSN Syntha-6 Chocolate Milkshake

BSN
Contains seed oils Lab tested
52 Fair
$63.99 · 48 servings
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Summary

BSN Syntha-6 Chocolate Milkshake scores 52/100. The protein matrix is genuinely premium — a 6-source blend of whey protein concentrate + isolate, calcium caseinate, micellar casein, milk protein isolate, and egg albumen delivering 22 g protein per serving with both fast and slow-digesting fractions. But the formula is wrapped in a Sunflower Powder composite (sunflower oil + corn syrup solids + sodium caseinate + mono and diglycerides + soy lecithin + tocopherols) and an MCT Powder composite (MCTs + non-fat dry milk + disodium phosphate + silicon dioxide), with polydextrose, natural and artificial flavors, cellulose gum, sucralose, and acesulfame potassium on top. Independent third-party lab testing (Consumer Reports, January 2024) detected only trace heavy metals — lead 0.23 mcg per serving, arsenic 0.20 mcg (2% of NSRL), cadmium and mercury not detected. The formula additives, not contamination, are what hold the score back. Owned by Glanbia Performance Nutrition (same parent as Optimum Nutrition).

At a glance

Beneficial ingredients 5
Harmful ingredients 6
Owned by Glanbia Performance Nutrition
Category Protein Powders

Contaminants 4

Source: Consumer Reports January 2024

Lead
0.23 mcg per serving
Low

Detected at a low level — within health-based exposure limits set by regulators such as the FDA, EPA, and EFSA, though above trace. Not an acute concern at typical use, but lower is always better for this substance. Treated as a trace finding rather than a contamination flag at this exposure level.

Consumer Reports January 2024 detected 0.23 mcg lead per serving.5 mcg/day.

Cadmium
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 cadmium below the lab's threshold of detection — no cadmium measurable in this product.

Arsenic
0.2 mcg per serving
Trace

A trace amount of arsenic — within the range expected from normal soil uptake/processing and below our concern threshold.

Consumer Reports January 2024 detected 0.2 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 16

Whey Protein Concentrate
Very Good

Complete dairy protein with high bioavailability and a rich amino acid profile. Retains beneficial bioactive compounds and provides one of the primary protein sources in the matrix.

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Whey Protein Isolate
Very Good

Higher-purity whey fraction with minimal lactose and fat; faster absorption than concentrate.

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Calcium Caseinate
Good

Slow-digesting casein-derived protein providing sustained amino acid release.

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Micellar Casein
Very Good

Slow-digesting native casein with intact micellar structure; provides a sustained-release amino acid profile that complements the fast-digesting whey fractions.

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Milk Protein Isolate
Very Good

Higher-purity milk protein with minimal lactose and fat, providing both whey and casein fractions in their natural ratio.

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Egg Albumen
Very Good

Egg-white protein providing a complete amino acid profile and an alternative animal-source protein for those wanting diversity beyond dairy. The most bioavailable whole-food protein source by reference standards.

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Sunflower Powder (Sunflower Oil, Corn Syrup Solids, Sodium Caseinate, Mono and Diglycerides, Dipotassium Phosphate, Tricalcium Phosphate, Soy Lecithin, Tocopherols)
Bad

Composite spray-dried creamer that hides eight ingredients behind one label — refined sunflower oil, corn syrup solids, sodium caseinate, mono and diglycerides (which can contain trans fats not required to be labeled), industrial phosphates, and soy lecithin. Adds processed fat and refined-sugar derivatives in a product otherwise marketed for protein quality.

See more about Sunflower Powder (Sunflower Oil, Corn Syrup Solids, Sodium Caseinate, Mono and Diglycerides, Dipotassium Phosphate, Tricalcium Phosphate, Soy Lecithin, Tocopherols) →
Cocoa Powder (Processed with Alkali)
Neutral

Dutch-processed cocoa has reduced flavanol and antioxidant content compared to natural cocoa.

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MCT Powder (Medium Chain Triglycerides, Non-Fat Dry Milk, Disodium Phosphate, Silicon Dioxide)
Neutral

Composite ingredient combining MCT (a beneficial coconut-derived fat) with non-fat dry milk, industrial phosphate, and silica anti-caking agent. The MCT itself is a positive but the composite carrier system adds processed components.

See more about MCT Powder (Medium Chain Triglycerides, Non-Fat Dry Milk, Disodium Phosphate, Silicon Dioxide) →
Polydextrose
Bad

Synthetic fiber filler made from glucose, sorbitol, and citric acid via heat polymerization. Counted toward fiber claims but offers limited gut-microbiome benefit compared to whole-food fiber and can cause GI discomfort at higher doses.

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Natural and Artificial Flavors
Bad

Synthetic chemical compounds with zero transparency on composition and no nutritional value. The 'and artificial' wording confirms artificial flavor presence.

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Cellulose Gum
Neutral

Wood-pulp-derived thickener; inert at typical concentrations but a processed-product marker.

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Sucralose
Bad

Chlorinated artificial sweetener linked to disruption of gut microbiome, potential insulin response issues, and generation of harmful chlorinated compounds during metabolism.

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Acesulfame Potassium
Bad

Artificial sweetener (Ace-K) with limited long-term safety data. Often paired with sucralose to mask aftertaste — a double artificial sweetener load.

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Papain
Good

Papaya-derived enzyme that aids protein digestion.

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Bromelain
Good

Pineapple-derived enzyme that aids protein digestion and may support recovery.

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Processing

Group 4 · Ultra-processed

Ultra-Processed Foods

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