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Optimum Nutrition Serious Mass 2.7kg

Optimum Nutrition

Low stock

ON's Serious Mass is the ultimate weight gain formula. If you find it difficult to gain weight, Serious Mass can help you develop the physique you'...

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£59.99

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£54.99

Optimum Nutrition Serious Mass 5.4kg

Optimum Nutrition

Low stock

ON's Serious Mass is the ultimate weight gain formula. If you find it difficult to gain weight, Serious Mass can help you develop the physique you'...

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Happy Customer

Brilliant customer service, well packaged items which are space efficient and speedy delivery. Special thanks to Michelle for working all hours of the clock to deal with questions!

SAMPLE: Complete Strength Cream Of Rice (25g per Serving)

While this certainly works, the first and second time I took it it made me feel rather sick to be honest and actually hampered my workout sessions, and ive never gone to the toilet so many times (apart from food poisoning) in the gym ever, I’ll agree with the review brothers on YouTube at a full scoop it is too strong , not the amount of caffeine (I can take allot) but the other stimulants in it must be not agreeing with me (could be the food coloring though or the lovely taste mix they use!), however after basically calling it a laxative!, I can tolerate 3/4 of a scoop without running to the loo!, and mixing it with my pump based pre I get a really good workout, be warned it is strong and not for everyone, hope this helps everyone

Outrageous

My boyfriend literally almost died, he had reactions he had never experienced from the pre-workout being extremely sick and had a perfumey aftertaste. Gym Power is great, especially delivery time so will order again just never this specific pre-workout.

Amazing 10+ stars

I’ve been buying from Gympower for a few years, always comes quickly and great value for money. Recently bought some panda supps in the BF sale and Royal Mail lost the package, emailed Gympower and they sent out a new one free of charge same day. I cannot recommend these guys enough. I challenge anyone to find a better place to buy high Stim pre work out at a better price.

Weight Gainers

Optimum Nutrition Serious Mass 2.7kg

Optimum Nutrition Serious Mass 5.4kg

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