---
product_id: 774317259
title: "Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Strawberry, 12 Pound (Packaging May Vary)"
brand: "optimum nutrition"
price: "KSh69445"
currency: KES
in_stock: true
reviews_count: 9
category: "Optimum Nutrition"
url: https://www.desertcart.co.ke/products/774317259-serious-mass-weight-gainer-protein-powder-mass-gainer-vitamin-c
store_origin: KE
region: Kenya
---

# 250g+ carbs per serving 50g blended protein 1200+ calories/serving Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Strawberry, 12 Pound (Packaging May Vary)

**Brand:** optimum nutrition
**Price:** KSh69445
**Availability:** ✅ In Stock

## Summary

> 🚀 Bulk Up, Stand Out: Serious Mass for Serious Gains!

## Quick Answers

- **What is this?** Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Strawberry, 12 Pound (Packaging May Vary) by optimum nutrition
- **How much does it cost?** KSh69445 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/774317259-serious-mass-weight-gainer-protein-powder-mass-gainer-vitamin-c)

## Best For

- optimum nutrition enthusiasts

## Why This Product

- Trusted optimum nutrition brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Calorie Powerhouse:** Fuel your gains with 1,200+ calories per 2-scoop serving—because size matters.
- • **Immune Support Formula:** Packed with 20+ vitamins & minerals including Vitamin C and Zinc to keep you strong inside and out.
- • **Carb-Loaded Energy Boost:** Over 250 grams of carbohydrates to keep your energy levels maxed and muscles fueled.
- • **Customizable Mass Gainer:** Mix with fruits, nuts, or peanut butter for a personalized calorie and flavor boost.
- • **Muscle-Building Protein Blend:** 50 grams of premium protein to support serious muscle growth and recovery.

## Overview

Optimum Nutrition Serious Mass is a high-calorie weight gainer delivering over 1,200 calories, 50g of blended protein, and 250g+ carbohydrates per 2-scoop serving. Enhanced with 20+ vitamins and minerals including immune-supporting Vitamin C and Zinc, it’s designed for those committed to intense training and rapid muscle growth. Versatile enough to customize with your favorite calorie-dense add-ins, Serious Mass is the go-to formula for millennials aiming to transform their physique and dominate their fitness goals.

## Description

More calories. More protein. More carbs. SERIOUS MASS by Optimum Nutrition serves over 1,200 calories, 50g of blended protein, and over 249g of carbohydrates per 2-scoop serving to help you maximize your daily caloric intake – the ideal post-workout and between meals shake for sizing up your goals. SERIOUS MASS provides you with more tools to help you pack on pounds, when taken in addition to normal calorie intake and over time with regular resistance training.

Review: Best protein shakes ever - Not only is this an desertcart a quality amount of protein, but it tastes so good! Usually, protein shakes taste worst than anything else but the STRAWBERRY flavor is fantastic (all other flavors like chocolate and peanut butter are absolute dog poop) you cannot go wrong with strawberry. At first, if you’re first starting to work out, you might have some stomach issues, but you have to very slowly increase the amount and your body will get used to it. I ONLY use one scoop because two is ridiculously too much and I don’t want to end up with liver or kidney failure lol but one scoop is good. Once you get used to it, no stomach issues at all! Very effective, I have gotten so many compliments from others who have been at the gym for longer and ache for my results. You must remain consistent with the gym and workouts, do very intense workouts. If you don’t, then you’ll just get fat from this lol I advise to only use one scoop size to make the bag last longer and prevent any health issues, two scoops is ridiculously too much. Be consistent and you can play with some mix ability and throw banana or some other fruits if you want. I would recommend and will continue to buy this after so many years of already doing so
Review: Works Great but... - 6'2 150 pounds unhappy with my body wanting to gain body weight, muscle and strength 12/5/19 I did and to this day eat 6 meals a day: breakfast, snack, lunch, snack, supper, snack. then bed. this in the past was not even enough to gain the kind of weight, and muscle i was looking for. and believe me i was not skimpy on servings. And researched my diet extensively...i am not going to bore you with the normal Eggs oatmeal rice nut (haha) green stuff...extra.. But as any extreme diet program that i had cooked up for myself the endless Cooking, packaging, taking food to work eating every 10min break and obviously lunch time began to get exhaustive and i found myself cheating or just skiping eating "sessions" which gets expensive and is annoying and discouraging... also eating and trying to gain weight when you are under weight is hard! just eating enough is a mental battle in itself. I ordered my first bag of Serious Mass in January 2020 i initially daunted by the huge doses required i decided take half sevings (one scoop) and to stick with my regular eating habits but integrate the Serious Mass into between meals. i also slightly dial back the amount I was eating for snacks. (like a handful of almonds or some peanut butter) Well i can tell you this stuff works great I noticed a huge difference in my hunger levels and in the amount of muscle I was gaining and weight. 4/9/20 as of today i weigh 190lbs and am still lean. great product. i take only half scoops whole is to much for me. My meal plan now: Breakfast, Serious Mass, Snack, Lunch, Snack, (Workout after work) Supper, Serious Mass, Snack, (Bed) Using this product sparingly even has greatly increaseed my results and weight gain i am very happy. Now a few tips.( i have bought 5 bags) Flavors: Chocolate. heavy not good for morningsbut good. Banana. very sweet but light and good for morning. Strawberry. mix of both (i got tired of it tho) Mixing: Do yourself a favor and get a 32 oz + shaker cup two heaping scoops is one serving will almost not fit in a 32 oz shaker cup dry! so take it in half servings and space it out. Also do not put the Shaker ball in first it will be a dough ball. put your Serious Mass in your shaker cup add milk or water shake it up. there will be some clumps so then add the shaker ball in and shake again. this will give you the best consistency. This stuff tastes like cake mix and can be hard to drink( just kinda thick) If you use water it will make it so much easier to drink after working out especially. (In the picture is 2 scoops on a small plate to give you an idea of the amount) Over all great product! VERY happy with it!

## Features

- HIGH CALORIE WEIGHT GAINER: More than 1,200 calories per 2-scoop serving
- 50 grams of blended protein per 2-scoop serving
- Over 250 grams of carbohydrates per 2-scoop serving
- With over 20 vitamins and minerals including Vitamin C and Zinc to provide immune support
- MORE VERSATILITY: Using an electric blender, add fresh or frozen fruits, peanut butter, nuts, and other calorie dense foods to boost your weight gain potential

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0001FSWMM |
| Best Sellers Rank | #4,560 in Health & Household ( See Top 100 in Health & Household ) #4 in Sports Nutrition Weight Gainers #571 in Sales & Deals |
| Customer Reviews | 4.4 4.4 out of 5 stars (3,650) |
| Date First Available  | April 21, 2004 |
| Department  | unisex-adult |
| Is Discontinued By Manufacturer  | No |
| Item model number  | 1031917 |
| Manufacturer  | Glanbia Performance Nutrition |
| Product Dimensions  | 11.5 x 5.5 x 16 inches; 12 Pounds |

## Product Details

- **Brand:** Optimum Nutrition
- **Flavor:** Strawberry
- **Item Weight:** 12 Pounds
- **Material Type Free:** Caffeine Free
- **Servings per Container:** 16

## Images

![Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Strawberry, 12 Pound (Packaging May Vary) - Image 1](https://m.media-amazon.com/images/I/814o1QYGHDL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best protein shakes ever
*by N***S on January 18, 2026*

Not only is this an Amazon a quality amount of protein, but it tastes so good! Usually, protein shakes taste worst than anything else but the STRAWBERRY flavor is fantastic (all other flavors like chocolate and peanut butter are absolute dog poop) you cannot go wrong with strawberry. At first, if you’re first starting to work out, you might have some stomach issues, but you have to very slowly increase the amount and your body will get used to it. I ONLY use one scoop because two is ridiculously too much and I don’t want to end up with liver or kidney failure lol but one scoop is good. Once you get used to it, no stomach issues at all! Very effective, I have gotten so many compliments from others who have been at the gym for longer and ache for my results. You must remain consistent with the gym and workouts, do very intense workouts. If you don’t, then you’ll just get fat from this lol I advise to only use one scoop size to make the bag last longer and prevent any health issues, two scoops is ridiculously too much. Be consistent and you can play with some mix ability and throw banana or some other fruits if you want. I would recommend and will continue to buy this after so many years of already doing so

### ⭐⭐⭐⭐⭐ Works Great but...
*by J***. on May 10, 2020*

6'2 150 pounds unhappy with my body wanting to gain body weight, muscle and strength 12/5/19 I did and to this day eat 6 meals a day: breakfast, snack, lunch, snack, supper, snack. then bed. this in the past was not even enough to gain the kind of weight, and muscle i was looking for. and believe me i was not skimpy on servings. And researched my diet extensively...i am not going to bore you with the normal Eggs oatmeal rice nut (haha) green stuff...extra.. But as any extreme diet program that i had cooked up for myself the endless Cooking, packaging, taking food to work eating every 10min break and obviously lunch time began to get exhaustive and i found myself cheating or just skiping eating "sessions" which gets expensive and is annoying and discouraging... also eating and trying to gain weight when you are under weight is hard! just eating enough is a mental battle in itself. I ordered my first bag of Serious Mass in January 2020 i initially daunted by the huge doses required i decided take half sevings (one scoop) and to stick with my regular eating habits but integrate the Serious Mass into between meals. i also slightly dial back the amount I was eating for snacks. (like a handful of almonds or some peanut butter) Well i can tell you this stuff works great I noticed a huge difference in my hunger levels and in the amount of muscle I was gaining and weight. 4/9/20 as of today i weigh 190lbs and am still lean. great product. i take only half scoops whole is to much for me. My meal plan now: Breakfast, Serious Mass, Snack, Lunch, Snack, (Workout after work) Supper, Serious Mass, Snack, (Bed) Using this product sparingly even has greatly increaseed my results and weight gain i am very happy. Now a few tips.( i have bought 5 bags) Flavors: Chocolate. heavy not good for morningsbut good. Banana. very sweet but light and good for morning. Strawberry. mix of both (i got tired of it tho) Mixing: Do yourself a favor and get a 32 oz + shaker cup two heaping scoops is one serving will almost not fit in a 32 oz shaker cup dry! so take it in half servings and space it out. Also do not put the Shaker ball in first it will be a dough ball. put your Serious Mass in your shaker cup add milk or water shake it up. there will be some clumps so then add the shaker ball in and shake again. this will give you the best consistency. This stuff tastes like cake mix and can be hard to drink( just kinda thick) If you use water it will make it so much easier to drink after working out especially. (In the picture is 2 scoops on a small plate to give you an idea of the amount) Over all great product! VERY happy with it!

### ⭐⭐⭐⭐⭐ It helps a lot
*by K***S on December 7, 2025*

Optimum Nutrition Serious Mass is a great choice for anyone looking to gain weight, build muscle, or increase overall calorie intake. The Chocolate flavor mixes smoothly—especially if you use a blender—and has a rich, dessert-like taste without being overly sweet. Each serving delivers a very high amount of calories, protein, and carbs, which makes it ideal for people with fast metabolisms or those who struggle to eat enough throughout the day. It also includes added vitamins, minerals, and creatine for extra support. The bag is large and lasts a good amount of time depending on how much you use. The powder is heavy, so mixing by hand can be a bit difficult, but blending solves that problem easily. Overall, Serious Mass is effective for healthy weight gain and muscle-building goals. If you need a calorie boost and don’t mind a thick shake, it’s a solid and reliable product.

## Frequently Bought Together

- Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Strawberry, 12 Pound (Packaging May Vary)
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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-03-07*