---
product_id: 1262095
title: "Optimum Nutrition GS Pro Gainer Weight Gainer Protein Powder, Double Chocolate, 5.09 Pounds (Packaging May Vary)"
brand: "optimum nutrition"
price: "HK$1419"
currency: HKD
in_stock: true
reviews_count: 9
category: "Optimum Nutrition"
url: https://www.desertcart.hk/products/1262095-optimum-nutrition-gs-pro-gainer-weight-gainer-protein-powder-double
store_origin: HK
region: Hong Kong
---

# 85g fast-absorbing carbs 60g high-quality protein blend 650 calories per serving Optimum Nutrition GS Pro Gainer Weight Gainer Protein Powder, Double Chocolate, 5.09 Pounds (Packaging May Vary)

**Brand:** optimum nutrition
**Price:** HK$1419
**Availability:** ✅ In Stock

## Summary

> 💥 Double Chocolate Power-Up: The ultimate post-workout fuel for unstoppable muscle gains!

## Quick Answers

- **What is this?** Optimum Nutrition GS Pro Gainer Weight Gainer Protein Powder, Double Chocolate, 5.09 Pounds (Packaging May Vary) by optimum nutrition
- **How much does it cost?** HK$1419 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/1262095-optimum-nutrition-gs-pro-gainer-weight-gainer-protein-powder-double)

## 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

- • **60g Premium Protein Blend:** Support muscle growth and repair with a potent protein mix that fuels your gains efficiently.
- • **85g Carbs to Recharge Energy:** Restore glycogen fast and keep your energy levels high for back-to-back training sessions.
- • **32 Essential Vitamins & Minerals:** Stay at peak performance with a comprehensive nutrient profile tailored for active lifestyles.
- • **Fuel Your Gains with 650 Calories:** Power through your workouts and recovery with calorie-packed nutrition designed for serious mass builders.
- • **Mixes Effortlessly Anytime, Anywhere:** Conveniently blend with a shaker or spoon—no clumps, no hassle, just smooth gains.

## Overview

Optimum Nutrition GS Pro Gainer is a high-calorie, nutrient-dense protein powder designed to accelerate muscle growth and weight gain. Each serving delivers 650 calories, 60g of premium protein, and 85g of carbohydrates, complemented by 32 vitamins and minerals including immune-supporting Vitamin C and Zinc. Perfect for post-workout recovery or between meals, it mixes effortlessly and comes in a rich Double Chocolate flavor, making it a top choice for active professionals committed to serious mass gains.

## Description

Putting on size requires a balance of heavy training and quality nutrition. Because everyone's a little different, some have a harder time packing on muscle than others. PRO Gainer is a high-protein formula delivering calories that count during recovery. Each shake provides ample supplemental protein, carbs, vitamins and minerals to build on the amount you're getting through a balanced diet of food. Use PRO Gainer as your post-workout recovery shake and/or high-protein meal between meals.

Review: Gains are great!! - BEST gainer ever!! I really recommend it!! Flavor is great and gains are awesome!dissolves easily ,energy Level is great..I combine it with monohydrate creatine by ON,it’s a great combination and of course with a good diet,works for me,but every body is different,Try to buy specific from the ON store,it is more secure that you going to get what u pay for.
Review: Great Product! Gained 4lbs in first 2 weeks. - OVERVIEW: I've always been at a constant weight for the past 5 years hanging around 150lbs. Before I started taking this about 2 weeks ago, I weighed 150lbs. I was doing one of those Kris Gethin muscle mass workouts for about 2 weeks in as well taking pretty much just Whey as my supplemental protein. I began taking the Pro Complex Gainer twice a day with 1 shake right in the morning and 1 before bed. I found this has helped buffer my entire day with constant protein intake. This is where it helped me the most. I had a hard time hitting those ridiculous 3000 calorie marks while trying to eat just brown rice and chicken, but adding in 2 shakes brought me almost half way there. I ate normally throughout the day as this stuff doesn't sit heavy in your stomach. I found this a huge plus since I hate that bloated sluggish feeling. So that left me with 1800 calories to get to which isn't terribly difficult as I'm eating yogurt, brown rice, nuts, and chicken throughout the day. And on training days, I'll have 1 pre-workout shake and 1 post-workout shake containing protein so I would surely hit my protein marks by this time. TASTE: This is by far the tastiest of the protein drinks I've had without having to mix in fruits and yogurt and what not into it. Double Chocolate flavor is a must. PERFORMANCE: I'm at 154lbs in just 2 weeks and mostly in muscle gains so I'm excited to see where this takes me. COST: This stuff can get costly since I noticed that you supposedly need about 5 regular scoops of what you use from the Whey Protein tub to make up just 1 serving of this stuff! The scoop for this protein is like a SHOVEL. I don't even understand how you can scoop this stuff out and pour it into any cup. So I end up using the extra plastic scoop from my other whey protein to get this stuff into my bottle. Given the large serving size, I'm 3/4 done with my tub so I will likely need to buy the 10lb bag next time.

## Features

- Vitamin C and Zinc Provides Immune Support along with Vitamin E
- 650 CALORIES - delivering calories that count to support your gains
- 60G PROTEIN BLEND - support your mass gaining goals with high-quality protein
- 85G CARBOHYDRATES - help restore energy levels
- 7g SUGAR (OR LESS)
- 32 VITAMINS & MINERALS - because the nutrient needs of very active individuals may be greater than those of less active people
- GREAT POST-WORKOUT OR BETWEEN MEALS
- MIXES EFFORTLESSLY - use a blender, shaker, or spoon to easily mix
- AVAILABLE IN 5 LB TUBS OR 10 LB BAGS

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0015R3A1S |
| ASIN  | B0015R3A1S |
| Age Range Description | Adult |
| Allergen Information | Milk, Soy |
| Best Sellers Rank | #11,131 in Health & Household ( See Top 100 in Health & Household ) #8 in Sports Nutrition Weight Gainers #1,150 in Sales & Deals |
| Brand Name | Optimum Nutrition |
| Color | No Color |
| Container Type | Bag |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,804) |
| Date First Available  | April 28, 2004 |
| Department  | unisex-adult |
| Diet Type | Kosher |
| Dosage Form | Powder |
| Flavor | Double Chocolate |
| Global Trade Identification Number | 00748927029710 |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions | 8.06 x 8.06 x 11.18 inches |
| Item Form | Powder |
| Item Weight | 5.09 Pounds |
| Item model number  | 1077890 |
| Manufacturer | Optimum Nutrition - NutWell |
| Manufacturer  | Optimum Nutrition - NutWell |
| Manufacturer Part Number | 1077890 |
| Material Features | Sugar Free |
| Model Name | GS - Pro-Gainers Weight Gainer - Protein Powder |
| Model Number | 1077890 |
| Number of Items | 1 |
| Primary Supplement Type | Vitamin C |
| Product Benefits | Muscle Growth, Weight Gain |
| Product Dimensions  | 8.06 x 8.06 x 11.18 inches; 5.09 Pounds |
| Total Servings Per Container | 14 |
| UPC | 748927029710 |
| Unit Count | 81.44 Ounce |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** Optimum Nutrition
- **Diet Type:** Kosher
- **Flavor:** Double Chocolate
- **Item Form:** Powder
- **Item Weight:** 5.09 Pounds
- **Item dimensions L x W x H:** 8.06 x 8.06 x 11.18 inches
- **Primary Supplement Type:** Vitamin C
- **Product Benefits:** Muscle Growth, Weight Gain
- **Unit Count:** 81.44 Ounce

## Images

![Optimum Nutrition GS Pro Gainer Weight Gainer Protein Powder, Double Chocolate, 5.09 Pounds (Packaging May Vary) - Image 1](https://m.media-amazon.com/images/I/71HWFC-+vVL.jpg)

## Available Options

This product comes in different **Size, Flavor** options.

## Questions & Answers

**Q: what's the difference between this one and serious mass?**
A: This is much easier to digest, healthier, better protein and nutrients and only one scoop compared to 4 which becomes chalky and hard to drink. This tastes a lot better than serious mass and is much easier to drink overall. I drank this with reduced fat milk for 3-4 months straight and gained 20 lbs. of course I was also tracking and lifting weights, but this helped a ton to get those extra 800 calories I needed that I couldn’t obtain through meals and a lot of cooking.

**Q: I'm most concerned about it causing gas.  Any comments?**
A: NO Gas with vanilla custard and i give this to my 98 yr old MOTHER who weight 80 LBS as a supplement !! SHE Wd get it cuase shes in a wheelchair- Just finished a 10 lb bag.. DO need to drink WATER cuase HIGH protein can stop u up.. I also add ice cream to it:) tastes great! Good stuff- Doc approved! Shes in GREAT shape + he does Labs on her al the time.

**Q: If this is so good, it makes me wonder why it has twice the protein and is $45 cheaper per 10lb bag than Gold Standard - the same company.**
A: Which Gold Standard are you looking at?  This is a lean weight gainer vs protein vs bulking weight gainer.  Sometimes the wholesalers give us deals if we purchase a large amount at a time.  Some sellers (myself included) will discount the price in relationship with the "cost" associated with the product I sell.

**Q: Which is better for bulk muscle mass: serious mass or pro gainer**
A: Serious Mass is a high-calorie gainer with 1,250 calories and 60 grams of protein per serving. PRO Gainer is a high-protein gainer with 60 grams of protein per serving at 650 calories.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Gains are great!!
*by J***H on December 29, 2025*

BEST gainer ever!! I really recommend it!! Flavor is great and gains are awesome!dissolves easily ,energy Level is great..I combine it with monohydrate creatine by ON,it’s a great combination and of course with a good diet,works for me,but every body is different,Try to buy specific from the ON store,it is more secure that you going to get what u pay for.

### ⭐⭐⭐⭐⭐ Great Product! Gained 4lbs in first 2 weeks.
*by B***N on September 29, 2012*

OVERVIEW: I've always been at a constant weight for the past 5 years hanging around 150lbs. Before I started taking this about 2 weeks ago, I weighed 150lbs. I was doing one of those Kris Gethin muscle mass workouts for about 2 weeks in as well taking pretty much just Whey as my supplemental protein. I began taking the Pro Complex Gainer twice a day with 1 shake right in the morning and 1 before bed. I found this has helped buffer my entire day with constant protein intake. This is where it helped me the most. I had a hard time hitting those ridiculous 3000 calorie marks while trying to eat just brown rice and chicken, but adding in 2 shakes brought me almost half way there. I ate normally throughout the day as this stuff doesn't sit heavy in your stomach. I found this a huge plus since I hate that bloated sluggish feeling. So that left me with 1800 calories to get to which isn't terribly difficult as I'm eating yogurt, brown rice, nuts, and chicken throughout the day. And on training days, I'll have 1 pre-workout shake and 1 post-workout shake containing protein so I would surely hit my protein marks by this time. TASTE: This is by far the tastiest of the protein drinks I've had without having to mix in fruits and yogurt and what not into it. Double Chocolate flavor is a must. PERFORMANCE: I'm at 154lbs in just 2 weeks and mostly in muscle gains so I'm excited to see where this takes me. COST: This stuff can get costly since I noticed that you supposedly need about 5 regular scoops of what you use from the Whey Protein tub to make up just 1 serving of this stuff! The scoop for this protein is like a SHOVEL. I don't even understand how you can scoop this stuff out and pour it into any cup. So I end up using the extra plastic scoop from my other whey protein to get this stuff into my bottle. Given the large serving size, I'm 3/4 done with my tub so I will likely need to buy the 10lb bag next time.

### ⭐⭐⭐⭐⭐ Excellent Protein for Clean Bulking
*by J***S on February 21, 2014*

Once again, Optimum Nutrition has a winner. To give you an idea of my lifestyle so you can make a comparison, my style of weight-lifting, eating, etc. is more of a "clean-bulking" program. Many will say the concept of the clean bulk is a myth, but I've done it. Is it perfect? Nah, but it works for me. I watch my diet all the time but am no calorie-counting zealot. I exercise every day of the week with five weight lifting sessions and three half-hour interval training cardio sessions (one day is combined of course). I am 5'6" and weigh 138 lbs with about 7% body fat. I am no expert on fitness but I've made it to where I am and I'm proud of it. So this review won't be the most scientific post on Amazon. First off, this is a GAINER protein. I will say that again because it merits repeating. GAINER. Despite it being visible in gigantic green letters on the package, and in the name, and in the description, I am sure some people managed to glaze over this. This is a higher calorie protein while being lower in fat, sugars, etc. so lean mass can be put on. You will put on some great muscle growth if used appropriately with exercise and proper diet. Despite the fact it's a lean gainer, some loss in definition is inevitable. Not all of those calories will go straight towards building muscle mass alone. I have been using this protein since November 2013 and I have seen some great improvements in my muscle gains and my strength shot through the roof. I am sure having the extra calories from the protein to increase muscle growth attributed to those results. Now I did experience some minor loss in definition with this protein since it is after all a GAINER; even with my constant clean diet not all of the calories went straight to my muscles some of it inevitably went to my fat reserves, particularly around the mid-section of course, but the loss in tone was minor. All in all I am thrilled with the results that this protein gave me and how much it bulked up my muscles with such little change to my "aesthetics" so to speak. The protein tastes fine. I am so sick of seeing "THIS PROTEIN DOESN'T TASTE LIKE CANDY. ONE STAR. THIS IS GROSS DO NOT BUY." If you want a candy like taste then go eat chocolate. This is a protein. If it has all the sugars and flavor additives then guess what? It defeats the purpose. Is it the best tasting one I've had? No, but I don't really care. It did it's job and that's what matters. I highly recommend this protein if you're looking to increase muscle mass without adding as much "other mass" AKA lean mass. The price is also a steal for 10 lbs. Pro Tip: If you open the box they ship it in with a knife, be careful. I learned the hard way.

## Frequently Bought Together

- Optimum Nutrition GS Pro Gainer Weight Gainer Protein Powder, Double Chocolate, 5.09 Pounds (Packaging May Vary)
- Optimum Nutrition Micronized Creatine Monohydrate Powder, Unflavored, 120 Servings, 600 Grams (Packaging May Vary)
- VELOMIX -2 Pack- 28 oz Protein Shaker Bottles for Protein Mixes - 2x Wire Whisk | Leak Proof Shaker Cups for Protein Shakes | Protein Shaker Bottle Pack | Shakers for Protein Shakes-Black&Transparent

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hk/products/1262095-optimum-nutrition-gs-pro-gainer-weight-gainer-protein-powder-double](https://www.desertcart.hk/products/1262095-optimum-nutrition-gs-pro-gainer-weight-gainer-protein-powder-double)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-18*