Rule One Proteins Mass Gainer

Frequently asked questions

Who is a mass gainer for?

It is for people who struggle to eat enough to gain weight or muscle. A gainer gives protein plus a large carb load in one shake. If you only want protein, a standard whey is the leaner choice.

Is it tested for banned substances?

Yes. It carries Informed Choice. That screens batches against the WADA banned-substances list. It tests on a sampling cadence. Certified batches are listed on the Informed Choice database.

Where can I buy it in the UK?

We list it at Amazon UK. Stock cycles change over time. So confirm it on the listing.

How does Informed Choice compare with Informed Sport?

Both test against the same banned-substances list. Informed Sport tests every batch. Informed Choice samples less often. Informed Sport is the stronger guarantee for elite tested competition.

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