About
Assured Supplements is an independent supplement shop based in Belfast, Northern Ireland, built around one simple standard: Nothing but the best.
From our shop at Unit 6, Westlink Enterprise Centre on Distillery Street, we supply sports nutrition and supplements from carefully selected brands alongside our own Assured Sports performance range.
Whether you're training for strength, running, HYROX, endurance sport or simply looking to support your nutrition, our aim is to make choosing supplements simpler — with quality products, practical advice and a range we genuinely believe in.
Built in Belfast
Assured Supplements started with a simple idea: create a supplement business that puts quality, knowledge and customer service first.
What began from home grew into local markets, an online supplement store and eventually our physical shop in Belfast.
Today, customers can shop with Assured in-store in Belfast or online for delivery across Northern Ireland and the rest of the UK.
Meet the Founder
Assured Supplements was founded by Niáll Doherty, a Sport & Exercise Science graduate from Ulster University with a strong personal interest in training, performance and sports nutrition.
Niáll isn't involved in sport only from the business side. Training and competing are a major part of his life, with a particular focus on HYROX and hybrid endurance performance.
That combination of education, practical experience and working with customers every day has helped shape the direction of Assured.
It also influences how we approach supplements. We want to understand what a product contains, why someone might use it and where it fits into their training or nutrition — rather than simply putting products on a shelf and trying to sell them.
As Assured has grown, that same approach has expanded beyond retail and contributed to the development of Assured Sports, our own Belfast-built performance nutrition range.
Nothing but the best
Nothing but the best isn't just a tagline. It's the standard we want Assured to be known for.
We carefully consider the brands and products we bring into the shop rather than stocking something simply because it's available. Quality, formulation, reputation and suitability for our customers all matter when we're deciding what Assured should sell.
That's particularly important for competitive athletes.
We take the risk of prohibited substances in sport seriously. Where appropriate, we can help athletes identify products that have undergone recognised third-party testing for banned substances and understand what they should look for when choosing supplements for tested competition.
Our goal is simple: when you buy from Assured, you should be confident that we've put thought into what we've chosen to put on our shelves.
More Than an Online Supplement Store
Our physical Belfast supplement shop gives customers somewhere to see products, compare options and ask questions before buying.
We stock sports nutrition across areas including protein powders, creatine, hydration and electrolytes, pre-workouts, amino acids, vitamins and performance nutrition.
Rather than trying to stock every supplement on the market, we focus on building a range around reputable brands and products we believe offer genuine value.
For customers across Greater Belfast, we also offer same-day local delivery on eligible orders, alongside our wider online delivery service.
Home of Assured Sports
Assured Supplements is also the home of Assured Sports, our own performance nutrition brand developed in Belfast.
Creating our own range was a natural progression from working with supplements, athletes and customers every day. It gives us the opportunity to develop products around the standards and performance demands we believe in ourselves.
The range currently includes Hydration+ Electrolyte Powder and Creatine Monohydrate, with further performance nutrition products to follow.
Built in Belfast. Made to go further.
Knowledge, Not Just Products
We don't believe good service ends when someone buys a tub.
Our Knowledge Hub provides clear, evidence-led guidance across hydration, electrolytes, supplementation and performance nutrition.
It's there to help customers understand ingredients, compare products and make better-informed decisions — without making sports nutrition unnecessarily complicated.
And if you'd rather speak to someone, that's exactly why we have a physical shop.
Visit Assured Supplements in Belfast
You can shop with us online or visit our supplement shop in Belfast.
Assured Supplements
Unit 6, Westlink Enterprise Centre
30–50 Distillery Street
Belfast
BT12 5BJ
If you're unsure what suits your training, sport or goals, come in and speak to us. We'll help you work through the options and find what makes sense for you.
Nothing but the best.