optimumnutrition

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Chocolate Peanut Butter,

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, - Main image
$16.50 $54.99 In stock

Category: POWDERS

Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Chocolate Peanut Butter, 6 Pound (Packaging May Vary) - POWDERS - Sold by optimumnutrition. Free US shipping, 30-day return policy. Quality products you can trust.

Customer Reviews (4.7 / 5 · 43 reviews)

Owen ★★★★★

Finally a weight gainer that doesn't taste like chalk—the chocolate peanut butter flavor actually makes me look forward to my shake. I've noticed real progress in my arms after using it for just two weeks.

Aurora E. ★★★★★

I’ve been drinking this after my evening lifts and the chocolate peanut butter flavor mixes really smoothly with milk—no clumps at all. The 6-pound bag lasts a solid month for me, which is great because I’m trying to add mass without eating a ton of extra meals. Honestly, seeing the scale creep up two pounds in three weeks makes me want to stick with it.

Kevin J. ★★★★★

I was skeptical about weight gainers until I tried this, but the peanut butter chocolate flavor blends smoothly and doesn't leave that gritty aftertaste. Mixing it with milk gives me 1,250 calories easily after my workout.

Ava P. ★★★★★

After hard workouts, I blend two scoops with whole milk and it’s like a milkshake that actually helps me recover. The 6-pound bag lasts a while, and I feel fuller and stronger since starting it.

Claire ★★★★★

Was skeptical about the 1,250 calories per serving being too heavy, but with a banana blended in it tastes great and the chocolate peanut butter flavor is actually enjoyable. The 50g of protein definitely helps me hit my daily numbers for bulking.

Michael ★★★★★

I was skeptical about the calorie count, but the Chocolate Peanut Butter flavor makes it actually enjoyable to drink. Two scoops with water gives me 1,250 calories that don't feel overly heavy. It's been a solid help for my lifting progress without the bloating I've had with other powders.

Christopher A. ★★★★★

Mixing this with whole milk and a banana gives me a shake that actually tastes like a dessert, not a chore. Each serving packs serious calories without that heavy, bloated feeling I’ve had with other brands. The vitamin C and zinc boost was a nice surprise for my immune system.

John Q. ★★★★★

Not as chalky as other weight gainers I've tried, the chocolate peanut butter flavor actually tastes like a dessert shake. Sticks with me for hours after my workout.

Ella C. ★★★★★

Mixing this with whole milk makes a thick, creamy shake that actually tastes like a dessert rather than a chalky protein drink. I’ve noticed real recovery gains after heavy leg days, and the 1,250 calories per serving are no joke.

Olivia S. ★★★★★

I was a little skeptical about a weight gainer that promised 1,250 calories per serving, but the chocolate peanut butter flavor genuinely mixes smooth and doesn't leave that chalky aftertaste. The creatine and zinc in here are a nice bonus for recovery too.