Gold Standard Pro Gainer, Double Chocolate
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
Certifications & Testing
Other Ingredients
Maltodextrin, Whey Protein Isolate, Whey Protein Concentrate, Calcium Caseinate, Whey Protein, Hydrolyzed, Cocoa, Medium Chain Triglyceride, Sunflower Oil, Natural & Artificial Flavors, Sunflower Lecithin, Soy Lecithin, Dimagnesium Phosphate, Tricalcium Phosphate, Calcium Carbonate, Sodium Ascorbate, DL-Alpha-Tocopheryl Acetate, Ferrous Fumarate, Biotin, Niacinamide, Vitamin A Acetate, Zinc Oxide, Copper Gluconate, D-Calcium Pantothenate, Manganese Sulfate, Pyridoxine Hydrochloride, Riboflavin, Thiamine Hydrochloride, Potassium Iodide, Cyanocobalamin, Folic Acid, Salt, Sucralose, Acesulfame Potassium
Recommended Use
165 grams About 1 scoop pro grainer powder 16 fl oz Cold water, milk or other beverage 30 seconds Stir, shake or blend until dissolved Suggested use: For healthy adults, consume enough energy from a combination of high quality foods and supplements throughout the day as part of a balanced diet and exercise program.
Warnings
See nutrition facts for saturated fat and cholesterol content Contains: Milk and soy.
Frequently Asked Questions
What is Optimum Nutrition Gold Standard Pro Gainer, Double Chocolate's Formulate score?
Optimum Nutrition Gold Standard Pro Gainer, Double Chocolate scores 73 out of 100 (grade B+) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Optimum Nutrition Gold Standard Pro Gainer, Double Chocolate worth it?
Optimum Nutrition Gold Standard Pro Gainer, Double Chocolate scores 73/100 (grade B+). That's an above-average result — most of its doses and ingredient forms are well-chosen, with only minor gaps in dosing, transparency, or testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Optimum Nutrition Gold Standard Pro Gainer, Double Chocolate?
Each serving contains Calcium (600 mg), Iron (7.5 mg), Potassium (660 mg), Vitamin A (330 mcg), and more. Serving size: 165 Gram(s). 14 servings per container.
How do I take gold standard pro gainer, double chocolate?
165 grams About 1 scoop pro grainer powder 16 fl oz Cold water, milk or other beverage 30 seconds Stir, shake or blend until dissolved Suggested use: For healthy adults, consume enough energy from a combination of high quality foods and supplements throughout the day as part of a balanced diet and exercise program.
Who makes Gold Standard Pro Gainer, Double Chocolate?
Gold Standard Pro Gainer, Double Chocolate is made by Optimum Nutrition. See Formulate's full grade and product lineup for Optimum Nutrition on its brand page.
Is Optimum Nutrition Gold Standard Pro Gainer, Double Chocolate third-party tested?
Optimum Nutrition lists the following certifications and testing for this product: Informed Choice.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.