Serious Mass Chocolate Peanut Butter
This product looks safe
- Niacin: 50.2mg is 1.4× the Tolerable Upper Intake Level (35mg)
- Folate: 680mg is 680.0× the Tolerable Upper Intake Level (1.0mg)
- 56% of ingredients have research evidence
What the Evidence Says
AI-generated · Qwen 3.6 · methodologyThis formula provides high caloric intake and protein to support muscle growth and weight gain, with strong evidence supporting protein's role in muscle synthesis. Vitamin A is included to support immune function and vision. Research evidence for these foundational nutrients is well-established, and the product maintains a high safety score.
AI-generated summary based on research evidence. Not medical advice.
Safety Alerts
Niacin: 50.2mg is 1.4× the Tolerable Upper Intake Level (35mg)
Folate: 680mg is 680.0× the Tolerable Upper Intake Level (1.0mg)
Product Label
Label Data
Supplement Facts — Evidence Check
Other Ingredients
Label Claims — Verification
Product Information
Directions for Use
336 grams About 2 heaping scoops serious mass protein powder 24 fl oz Cold water, milk or other beverage 30-45 seconds Blend until dissolved Tips: New users may find it beneficial to begin with 1/2 of a serving daily for the first week and then gradually increase to 1 serving a day.
Suggested Use: For healthy adults, consume enough protein to meet your daily protein requirements with a combination of high protein foods and protein supplements throughout the day as part of a balanced diet and exercise program.
Warnings & Precautions
Contains: Egg, milk, soy.
Formulation Notes
Why serious mass? Each serving is packed with 1,250 calories to support a calorie surplus for weight and muscle building. 50 grams of protein to support muscle building and recovery. 253 grams of carbohydrates to support fueling of intense workouts and aid in replenishment of glycogen stores. 3 grams of creatine monohydrate to support performance. 25 vitamins and minerals plus glutamine.
Strength training Supports performance Supports weight gain goals
Supports muscle building & weight gain goals
1250 calories Helps boost calorie intake 50 g protein Helps build and maintain muscle 253 g carbs Helps fuel intense workouts Chocolate peanut butter artificially flavored
Serious Mass is designed to provide serious calories, protein and carbohydrates – making this a convenient way to get extra calories throughout your day.
Additional Information
Optimum Nutrition has been trusted to provide the highest quality in post-workout recovery, pre-workout energy, and on-the-go sports nutrition for over 30 years and in 90+ countries. After careful supplier selection, each ingredient is tested to assure exceptional purity, potency and composition. We hold ourselves to the highest production standards, all so you can unlock your body’s full potential. Authentic Optimum Nutrition product Optimumnutrition.com/authentic
Informed Choice We test - you trust Informed Choice is a quality assurance program for sports nutrition products. The program certifies that nutritional supplements that bear the Informed Choice logo are regularly tested for banned substances by the world class sports anti-doping lab, LGC Limited. Manufactured in the USA This product contains ingredients of international and domestic origin
See supplement facts for sodium and cholesterol content When taken in addition to normal calorie intake and regular weight resistance training
Check out optimumnutrition.com for recipes and training tips.
Store in a cool, dry place.
Serving scoop included, but may settle to the bottom during shipping
Contents sold by weight not volume. Some settling will occur.
Product Details
Research Evidence
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.