SKU: 42020739424

Optimum Nutrition Serious Mass 12lbs

Sale price$15750.00 Regular price$17500.00
Save 10%

Pay in installments of $4375.00 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Optimum Nutrition Serious Mass 12lbsOptimum Nutrition Serious Mass 12lbs Optimum Nutrition Serious Mass 12lbs is a premium high calorie mass gainer specially designed for hard gainers, athletes, and bodybuilders who struggle to gain size and muscle. With over 1250 calories and 50g of protein per serving, this powerful gainer provides everything your body needs to stay in a calorie surplus, build lean muscle, and recover faster after intense workouts. Packed with complex carbohydrates,

Optimum Nutrition Serious Mass 12lbs

Optimum Nutrition Serious Mass 12lbs is a premium high-calorie mass gainer specially designed for hard gainers, athletes, and bodybuilders who struggle to gain size and muscle. With over 1250 calories and 50g of protein per serving, this powerful gainer provides everything your body needs to stay in a calorie surplus, build lean muscle, and recover faster after intense workouts.

Packed with complex carbohydrates, essential vitamins, minerals, creatine, and glutamine, Serious Mass is the ultimate solution for anyone looking to bulk up effectively.


Key Features of Optimum Nutrition Serious Mass 12lbs

  • Over 1250 calories per serving

  • 50g of high-quality protein blend (whey, casein & egg protein)

  • More than 250g of complex carbs per serving

  • Enriched with 25+ vitamins and minerals

  • Includes creatine, glutamine & glutamic acid

  • Supports maximum size, strength, and recovery

  • 12lbs bag offers long-lasting supply for serious bulkers

  • Delicious flavors with easy mixability


Benefits of Optimum Nutrition Serious Mass 12lbs

1. High-Calorie Formula for Rapid Size Gains

With more than 1250 calories per serving, Serious Mass ensures you get the calorie surplus required for muscle growth and mass gain.

2. Advanced Protein Support

Each serving delivers 50g of protein from a high-quality blend, supporting lean muscle development, faster recovery, and increased strength.

3. Energy From Complex Carbohydrates

Over 250g of complex carbs fuel your body with sustained energy while replenishing glycogen stores after intense training sessions.

4. Enhanced Recovery & Performance

Infused with creatine and glutamine, Serious Mass helps reduce muscle soreness, improve recovery, and boost training performance.

5. Complete Nutritional Profile

Serious Mass contains 25+ vitamins and minerals to support overall health, metabolism, and energy production.


Nutritional Information (Per Serving – May Vary by Flavor)

  • Calories: 1250+

  • Protein: 50g

  • Carbohydrates: 252g

  • Fats: 4.5g

  • Creatine, Glutamine & Glutamic Acid included

  • 25+ Essential vitamins & minerals


How to Use Optimum Nutrition Serious Mass 12lbs

Mix 2 heaping scoops (approx. 334g) with 24–32 oz of water or milk. Blend until smooth and creamy. Consume 1–2 servings daily, depending on your calorie needs.

Best times to use:

  • Post-workout (for recovery & growth)

  • Between meals (to maintain calorie surplus)

  • Before bed (to fuel overnight recovery)


Who Should Use Optimum Nutrition Serious Mass 12lbs?

  • Hard gainers who struggle to put on size

  • Athletes in bulking cycles

  • Bodybuilders targeting rapid mass gain

  • Fitness enthusiasts needing extra calories & protein


Why Choose Optimum Nutrition Serious Mass 12lbs?

Optimum Nutrition is a globally trusted brand known for producing high-quality, science-backed supplements. Serious Mass is their flagship gainer formula, offering unmatched calorie, protein, and carbohydrate content in one shake. The 12lbs pack provides excellent value and is ideal for long-term bulking goals.


FAQs

Q1: How many servings are in Optimum Nutrition Serious Mass 12lbs?
The 12lbs bag provides approximately 16–18 servings.

Q2: Can beginners use Serious Mass?
Yes, it’s suitable for beginners and advanced athletes alike.

Q3: Can I take Serious Mass every day?
Yes, daily use is safe as part of a balanced diet and workout plan.

Q4: Can I use it as a meal replacement?
Yes, but for best results, combine it with whole foods for complete nutrition.

Q5: Does Serious Mass contain creatine?
Yes, it includes creatine, glutamine, and glutamic acid to enhance performance and recovery.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 42020739424

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.0 ★★★★★
Based on 22 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
D-Man
Houston, US
★★★★★ 5
Love everything about it!
Color: Brown
Absolutely love this bag! It’s real Leather! It’s soft and slouchy. Has MANY inside pockets which like because I carry a little bit of everything. Has plenty of room without being overly huge. I’m using the crossbody strap to keep the weight off my shoulder and my hands free. This is a good handbag…and I am picky! This is the 4th bag (brand) I have gone thru this year alone. I’m gonna stick with this one (brand) til it wears out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2025
S
Verified Purchase
Sandria Sandlin
Battle Creek, US
★★★★★ 5
Great quality!
Color: Black
Great style, size and quality at a reasonable price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
C
Verified Purchase
Caroline
Los Angeles, US
★★★★★ 5
Carolyn
Color: Wine
Very beautiful, I only returned it because I like a much sifter leather, liked the crossbody and the deep burgundy color. Nice and big, how holds a lot. I would recommend this bag
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 25, 2025
P
Verified Purchase
PJ
Battle Creek, US
★★★★★ 4
Lightweight
Color: Black
I’m not crazy about the leather but I love how light it is and all the compartments. I got tired of heavy leather shoulder bags and so did my shoulders. It’s perfect for every day and very roomy. I’m using the shorter strap for ease. I recommend this bag.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 10, 2025
A
Verified Purchase
Auntie ♥️
Louisville, US
★★★★★ 5
Perfect Everyday Bag
Color: Black
This bag is so nice. I added a purse organizer and it is perfect for everyday and very versatile.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026

recommand products