Rule1

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Glutamine
Isolate Protein

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Shop the Rule 1 range at Muscle House and discover premium sports nutrition trusted by athletes, gym-goers and fitness enthusiasts around the world. Built on a commitment to quality, purity and performance, Rule 1 offers a wide selection of supplements designed to support your training, recovery and nutrition goals.

Whether you're building muscle, increasing strength, supporting recovery or improving your daily nutrition, the Rule 1 range provides high-quality supplements to suit a variety of fitness goals and training styles. Every product is manufactured with a focus on quality ingredients and consistency, giving you confidence in every serve.

Browse the complete Rule 1 collection at Muscle House and discover premium sports nutrition designed to help you perform at your best.

Let customers speak for us

from 19 reviews

I've been using GHK powder for a bit now and really loving it—mixes easy, no bad taste, and I can feel the quality. Noticed better recovery and just feeling better overall. Simple to use and does exactly what it’s meant to. I highly recommend it.

Paula

05/27/2026

Collagen Copper Peptide GHK-CU

Hands down best flavour if you love fruit loops you will be amazed at the taste of this 10/10

Shaun Z.

05/25/2026

Ghost Whey Protein

Amazing product and amazing customer service always from muscle house team !!!

Gehan

05/25/2026

Tonic

Perfect and very comfy lifting belt, very strong at supporting back, would recommend

Dean G.

05/25/2026

Pro Leather Belt

Best in business. Super professional and easy to deal with.

Luca

05/25/2026

Muscle House

The best flavoured protein on the market . 10/10

Luca

05/25/2026

Ghost Whey Protein

Shopping was so easy website is very easy to use and delivery well what can I say haven’t received something so fast in my life great job guys definitely a customer for life 👌🏻

Mick r.

05/25/2026

Muscle House

Absolutely loving this jumper it’s a perfect fit perfect for the gym and definitely for out the gym do your self a favour and stock up for the winter 😉✌🏻

Mick r.

05/25/2026