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Fast, tracked UK delivery
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Order
Order before 4pm on weekdays or 12pm on Saturdays.
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Dispatched same day
Packed and sent the same day with Royal Mail Tracked 24.
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Delivered
Tracked to your door. Free over £30.
Featured product
Daily Essentials
Sale price
£40.00
Regular price
£50.00
Taxes included.
Shipping calculated at checkout.
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Not sure where to start?
Use the calorie calculator
Work out your daily calories
Cutting, bulking or maintaining? Get your calories and macros in under a minute, then we'll email you the numbers.
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Flex Answers
Calories What You Need To Know
How to actually calculate your calories (without the guesswork) If you've ever typed "how many calories should I eat to bulk" into Google at 11pm and closed twelve tabs more...
Calories What You Need To Know
Calories What You Need To Know
FAQs
Questions? Sorted.
How fast is delivery?
Order before 4pm Monday to Friday, or before 12pm on Saturday, and we'll dispatch the same day with Royal Mail Tracked 24. Delivery is free on orders over £30, and £3.99 below that.
What's your returns policy?
You've got 30 days to return your order. If something arrives damaged or isn't what you ordered, let us know within 7 days and we'll put it right.
I'm new to supplements. Where should I start?
Start with our free calorie calculator to get your numbers. If you want a simple starting point, the Daily Essentials Bundle covers the basics: Creatine, L-Glutamine and two Bovine Collagen, a 60-day supply for £40.
Where are your products made?
Our products are made in the UK in a GMP-certified facility.
Who are your products for?
Everyday gym-goers aged 18 and over, whether it's week one or year three. Our products aren't intended for anyone under 18.
How do I get in touch?
Email info@muscleflexuk.com. We're around Monday to Friday, 9am to 9pm.
Still stuck? Email info@muscleflexuk.com, Monday to Friday, 9am to 9pm.