Optimum NutritionSerious Mass Weight Gainer Protein Powder, Vitamin C and Zinc for Immune Support, Vanilla, 12 Pound (Packaging May Vary)

I picked this a couple of summers ago to help keep weight on me. I tend to lose a lot of weight in the summer because I work outside a lot. This year was no exception and this stuff is absolutely amazing! It mixes up so well, I can work out with it, which helps build muscle, it helps my energy level levels., The ingredients are everything you need in a daily supply and the taste is great. I always mix mine with frozen fruit or peanut butter.!

I’ve been using Optimum Nutrition Serious Mass for a while now and keep coming back to it because it delivers consistent results. It’s a great weight gainer with plenty of calories and protein to help me build muscle and add mass.The added creatine is a nice bonus, supporting my strength gains and recovery. The taste mixes well and isn’t too sweet or chalky, which is a plus compared to other mass gainers I’ve tried.If you’re looking for a dependable product to help with weight gain and muscle building, I’d definitely recommend Serious Mass. I’ve bought it over and over again and plan to keep doing so!

I've been taking Serious Mass twice a day — once after my workouts and again before bed — and I’ve already noticed a big difference. I feel stronger, more energized, and I’m finally putting on the weight I’ve been working for.It mixes easily, tastes great with milk, and doesn’t leave me feeling too full or bloated. It’s packed with calories, protein, and nutrients — perfect for my busy schedule and night shifts.If you’re serious about gaining mass the healthy way, this is 100% worth it. Stay consistent and you’ll see results! 💪🏾🔥#MassGainer #SeriousMass #MuscleGrowth #WeightGainJourney

I love this! The taste isnt horrible and i usually dont like protein powders. It works as i expected, i have trouble gaining weight and muscle so this was perfect for me. Its high in calories and protein and that was exactly what i was looking for. It also mixes very well into a nice creamy shake, i love to mix fruit in as well.

Tastes great, mixes easily no chunks. Quality ingredients and energy boost. get this if you're looking for extra calories great value if it's on sale

My son has been using Optimum Nutrition Serious Mass for a few weeks and he loves it. Each serving is packed with over 1,200 calories, which makes it easy to hit your daily intake goals without force-feeding. The Chocolate flavor blends well with milk. He didn’t milk the taste when mixed with water. Just a heads-up—start with half a serving if you’re new to weight gainers.

This is the first time I’ve actually finished a full container of a mass gainer, and while it helped me gain about 5 lbs (alongside eating more), I had some struggles with it too. I got the vanilla flavor, and it was extremely sweet—to the point where it felt like a sugar coma every time I drank it. I normally don’t eat sweets, so I believe this sudden sugar intake caused a noticeable acne breakout on my face.Like most gainers, it’s heavy on the stomach and made me feel bloated for hours, which made it hard to eat proper meals after having a shake. That said, it does mix very well with no clumps, and the texture is smooth and creamy.I’m not sure if vanilla is just the sweetest flavor, but I’m hesitant to repurchase unless I try a different one or find a cleaner option. It works, but there are trade-offs.

The media could not be loaded. I’ve been using Optimum Nutrition’s Serious Mass Gainer for a few weeks now, and it’s been a great addition to my muscle-building routine. The price is very affordable for the amount of calories and protein you get, making it a solid value. The shipment arrived on time, and the product was in perfect condition. Each serving provides 1,250 calories (with milk) and 50 grams of protein, which has really helped me achieve a calorie surplus and gain muscle. The flavor is fantastic, especially the chocolate, and the texture is incredibly smooth—no clumps or graininess. It’s easy to mix, and I love that it feels like a hearty, satisfying meal replacement. While it can be a bit sweet for some, it’s not a dealbreaker for me. Overall, if you’re looking for an effective, affordable, and tasty mass gainer, Serious Mass is definitely worth trying.