• Happy Diwali from Dropy
  • 🎁 Free CeraVe gift on every order
  • 🚚 Free delivery from ₹1,499
  • 🎁 Free Squalane from ₹3,999
  • ✓ 100% genuine products, imported from the USA
  • 🎥 Every order packed on video
Diwali offerOffer
Optimum Nutrition Serious Mass Weight Gainer and Gold Standard Casein Protein Powder tubs front view premium imported fitness supplements.

Optimum Nutrition

Optimum Nutrition Serious Mass High Protein Weight Gainer Powder And Gold Standard One Hundred Percent Micellar Casein Protein Powder Combo

Why you'll like it

  • Accelerated Mass Gaining — Serious Mass provides an intensive calorie surplus with fifty grams of protein and over two hundred and fifty grams of carbohydrates per serving to fuel serious size goals
  • Sustained Overnight Recovery — Gold Standard Casein delivers twenty-four grams of slow-digesting micellar protein to feed muscles for up to eight hours while you sleep
  • Enhanced Muscle Performance — Formulated with three grams of added creatine monohydrate and glutamine to increase strength and support muscle tissue repair
  • Comprehensive Nutritional Support — Packed with over twenty essential vitamins and minerals alongside naturally occurring essential amino acids to support overall health and protein synthesis

Product details

Achieving your ultimate mass-building and muscle-recovery goals requires a strategic, round-the-clock nutritional approach. This premium Optimum Nutrition combination pairs the legendary Serious Mass Weight Gainer with the Gold Standard one hundred percent Micellar Casein, offering fitness enthusiasts in India the perfect day-and-night muscle management system.

Serious Mass delivers an incredible calorie surplus packed with carbohydrates, whey protein concentrate, calcium caseinate, and egg albumen, making it the ideal daytime formula for hard gainers struggling to put on size. It helps replenish glycogen stores and triggers muscle hypertrophy during your active hours.

To ensure your hard-earned gains are protected while you sleep, Gold Standard Micellar Casein steps in as an overnight anti-catabolic shield. This slow-digesting protein releases essential amino acids steadily for up to eight hours, preventing muscle breakdown during prolonged periods without food.

Together, these authentic USA-imported supplements provide the comprehensive caloric foundation and sustained amino acid delivery needed for serious physical transformations.

  1. During the day or post-workout, mix two scoops of Serious Mass with twenty-four ounces of cold water or milk using an electric blender to support daily caloric goals.
  2. Before going to bed, mix one scoop of Gold Standard 100% Casein with ten to twelve ounces of cold water or milk using a shaker cup, consuming it thirty minutes before sleep to ensure sustained overnight amino acid delivery.

Serious Mass Ingredients: Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Natural and Artificial Flavors, Vitamin and Mineral Blend (Dipatassium Phosphate, Magnesium Aspartate, Calcium Carbonate, Ascorbic Acid, Zinc Citrate, Copper Gluconate, d-Alpha Tocopheryl Acetate, Manganese Sulfate, Chromium Citrate), Lecithin, Creatine Monohydrate, L-Glutamine, Acesulfame Potassium. Gold Standard Casein Ingredients: Micellar Casein, Cocoa, Natural and Artificial Flavors, Salt, Cellulose Gum, Xanthan Gum, Carrageenan, Lecithin, Sucralose, Aminogen.

As printed by the brand. Check the pack label if you have an allergy.

BrandOptimum Nutrition
Ships fromUSA (sourced directly), checked in Navi Mumbai
Sold byDropy.in

Ratings & reviews

From our customers

No reviews yetBe the first to review this product.
Write a reviewOptimum Nutrition Serious Mass High Protein Weight Gainer Powder And Gold Standard One Hundred Percent Micellar Casein Protein Powder Combo

More from Optimum Nutrition

View all

FAQs

Which is the no. 1 mass gainer in the world?

Optimum Nutrition Serious Mass is widely recognized globally as a premier high-calorie weight gainer for individuals looking to build significant physical mass. It provides a reliable blend of carbohydrates and proteins to help hard gainers achieve a caloric surplus safely and effectively.

Is Optimum Nutrition Serious Mass gainer healthy?

Yes, it is a healthy and safe sports nutrition supplement when used alongside a balanced diet and regular exercise routine. It provides an efficient blend of macronutrients, vitamins, and minerals specifically formulated to support muscle growth and weight gain goals safely.

Can I use Serious Mass and Micellar Casein together on the same day?

Absolutely. Utilizing both products strategically maximizes your results by using Serious Mass during the day or post-workout for an immediate caloric and protein influx, and Casein before bed to prevent muscle breakdown during overnight sleep.

Are these Optimum Nutrition supplements authentic USA imports available in India?

Yes, Dropy India sources these products directly from the United States to guarantee one hundred percent authenticity. Indian fitness enthusiasts can shop with confidence knowing they are receiving genuine, unadulterated international formulations.

What is the primary difference between whey protein and micellar casein protein?

The primary difference lies in digestion speed. Whey protein is rapidly absorbed by the body, making it ideal for immediate post-workout recovery, while micellar casein digests slowly over seven to eight hours, providing a sustained release of amino acids perfect for nighttime muscle protection.

How long will delivery take?

Most orders arrive in 15–20 days: we source each product directly from the USA, check it at our Navi Mumbai warehouse and pack it on video. Items marked Dropy Express ship from our India warehouse and arrive in 3–5 days.

Is cash on delivery available?

Full cash on delivery is available all over India on Dropy Express items. For other orders from ₹2,499 to ₹15,000 you can use Partial COD: pay 25% online now and the rest in cash on delivery.

Are your products genuine?

Yes. Every product is 100% authentic, sourced directly from the USA, quality-checked and packed on video at our Navi Mumbai warehouse.

What if my order arrives damaged or wrong?

Write to us at [email protected] as soon as it arrives. Damaged, wrong or not as described, our Buyer Protection gives you a full refund. The details are in our Return, Refund & Cancellation Policy.

Is delivery free?

Delivery is free on orders from ₹1,499. Below that a ₹79 delivery fee applies.