The Backstory

We got tired of the lies on the label.

How Stimulus Nutrition started, and what we actually built.

January 2024

The frustration.

The pre-workout aisle was a noise machine. 5,000mg "energy matrices" that hid the dose. Labels promising "next-level pumps" from 800mg of citrulline — a fifth of what the research uses. Stimulants stacked four-high so the tub felt strong even when the actives weren't. We weren't supplement scientists, but we were lifters — and we wanted to know exactly what we were putting in the scoop. So we started building the brand we'd actually buy.

October 2025

The launch.

Eighteen months of formulation, tasting, and label-reading later, OMNISHRED launched. Every dose set at the clinical research level. Every ingredient on the front of the label. One flavour — Pink Lemonade — because we'd rather get one flavour right than rush four to market. The first 20 reviews came back at 4.9 out of 5. Then we built Essential Creatine to go with it. Same principle: do one thing properly.

The Founders

Two people.
One product line.

Reuben Aryiku, Co-Founder of Stimulus Nutrition

Co-Founder & CEO

Reuben Aryiku

Reuben spent five years coaching strength clients before launching Stimulus Nutrition with Adnan. He owns the product story end-to-end — formulation choices, dosing, label clarity, and the supplier relationships in the UK. If you've messaged the brand on Instagram, you've probably been talking to Reuben.

Adnan Siraj, Co-Founder of Stimulus Nutrition

Co-Founder & CEO

Adnan Siraj

Adnan handles the half of the business that keeps the lights on — operations, fulfilment, the Shopify backend, the customer side of the inbox. He's also been the brand's loudest tester: every formulation revision had to clear his 5am training session before it shipped.

The Receipts

Who's training on it.

Customer in a gym holding the OMNISHRED tub, flexing
Customer in workout gear holding the OMNISHRED tub, smiling
Customer in a red workout top holding the OMNISHRED tub
Customer holding the OMNISHRED tub

Tag @stimulusnutritionuk on Instagram to land here.

Try It

Ready to feel the difference from your first workout?

Buy Omnishred — £39.95 Or read the full ingredient panel →