MuscleFier Nutrition

PREMIUM STIMULANT-FREE PRE-WORKOUT

What if your best workout didn't need caffeine?

UK MANUFACTURED

THIRD-PARTY LAB TESTED

STIMULANT-FREE

30-DAY GUARANTEE

UK MANUFACTURED

Made in the UK under controlled manufacturing standards.

THIRD-PARTY LAB TESTED

Independent testing documentation available for INFRNO.

GMP QUALITY STANDARDS

Produced using documented quality-control processes.

30-DAY GUARANTEE

Try INFRNO with the reassurance of our money-back guarantee.

Choose Your INFRNO Supply

Single Tub
50 Reviews

Single Tub

30/60 SERVINGS • £1.10 per serving

£32.96
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10% OFF + FREE SHIPPING
Duo Pack
50 Reviews

Duo Pack

60/120 SERVINGS • 99p per serving

£59.34
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SAVE 20% + FREE SHIPPING
Three-Tub Stack
50 Reviews

Three-Tub Stack

90/180 SERVINGS • 88p per serving

£79.11
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Why I Built INFRNO

A stimulant-free pre-workout, made for people who train around work and family.

My Interview with Elliott Matthews — WBC Asia Continental Champion

Chatting to professional boxer Elliott Matthews in the gym about INFRNO. His honest take, in his own words.

Built for the Way You Train

Train Later, Without the Caffeine

SERIOUS TRAINING. NO CAFFEINE.

QUALITY YOU CAN VERIFY

Testing and Certificates in One Place

Review the available Certificates of Analysis, third-party laboratory reports and manufacturing documents connected to INFRNO.

VIEW TESTING & CERTIFICATES

TESTED. DOCUMENTED. TRANSPARENT.

What’s Inside INFRNO and Why

The key actives in INFRNO, and the exact dose of each.

L-Citrulline

Pump & Performance

8,000mg Per Scoop

Beta-Alanine

Training Endurance

3,200mg Per Scoop

Betaine Anhydrous

Strength & Power

3,000mg Per Scoop

HydroPrime® Glycerol

Hydration & Fullness

2,000mg Per Scoop

Taurine

Hydration Support

2,000mg Per Scoop

L-Tyrosine

Focus & Precision

1,000mg Per Scoop

L-Citrulline

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Beta-Alanine

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Betaine Anhydrous

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HydroPrime® Glycerol

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Taurine

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L-Tyrosine

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1 OF 6

★★★★★

BUILT FOR REAL TRAINING

What Customers Say About INFRNO

★★★★★

T.O.B

I've always had a high caffeine pre-workout. I honestly didn't realise I could train this well without it. Took INFRNO around 20 minutes before my workout and had one of my best sessions. Looking forward to using it again tomorrow. Tastes great too.

30 May 2026

★★★★★

Ben Richardson

Mega stuff. Ordering again. Brilliant energy, great pumps and I can still sleep properly afterwards. Exactly what I wanted from a non-stim pre-workout.

2 June 2026

★★★★★

theSummitChaser

Can't praise this enough. Split scoop for hard sessions and it delivers every time. Excellent pump, great flavour and now part of my regular supplement stack.

30 May 2026

★★★★★

Black-Ops Clothing

I'm former military and train almost every day. This is easily the best pre-workout I've used. No jitters, no crashes and I still sleep perfectly at night. This is now a permanent part of my routine.

29 May 2026

★★★★★

David Jones436

Easy to use, tastes great and gives a steady boost throughout the workout without the sudden energy drop I normally get from stimulant products.

30 May 2026

★★★★★

T.O.B

I honestly forgot it was stimulant-free until after my workout because the session felt so good.

30 May 2026

★★★★★

ElevateHer Supplements

Fantastic pump and brilliant overall experience. After trying it at my gym before ordering, I knew this was something worth buying. Highly recommended.

1 May 2026

★★★★★

Abdul Kadir

Great experience from the first workout. Really enjoying INFRNO and looking forward to making it part of my regular training routine.

28 June 2026

★★★★★

Fazza

Five stars. Really pleased with INFRNO and enjoying every session with it.

10 June 2026

★★★★★

theSummitChaser

Great taste, mixes easily and has become one of the few supplements I genuinely look forward to taking.

30 May 2026

★★★★★

Chris Harris

Brilliant product. Couldn't recommend it enough.

29 May 2026

★★★★★

Steve

Five stars. Exactly what I expected and happy to support the brand.

1 June 2026

FREE GUIDE — STRAIGHT TO YOUR INBOX

TRAINING FOR REAL LIFE

I’ve trained with weights for over 40 years, alongside boxing and jiu-jitsu — through injuries and the years when life got in the way. This isn’t a perfect programme. It’s what I’ve learned about staying consistent when work, family and life don’t go to plan.

GET THE FREE GUIDE
Why Choose ?
Others
Properly Dosed Performance Ingredients
Often Underdosed
Clearly Disclosed Ingredient Amounts
Proprietary Blends
✓ Stimulant-Free Formula
Usually Caffeinated
✓ Third-Party Lab Tested
Varies
✓ UK Manufactured
Varies

Train Smarter. Know More.

Practical guidance on non-stim pre-workouts, supplement transparency and building a training routine that works around real life.

Questions Before Your First Scoop

Clear answers about INFRNO, non-stim training, lab testing, delivery and our 30-day guarantee.

Who Is INFRNO Designed For?

INFRNO is designed for adults who want stimulant-free training support without relying on caffeine. Whether you train before work, after work or later in the evening, INFRNO provides a fully dosed, non-stimulant formula to support pump, hydration and performance.

Can I Take INFRNO Every Day?

Yes. INFRNO can be used as part of your regular training routine. On training days, take one full scoop (23.5g) 20–30 minutes before your workout. For lighter sessions, you can use a half scoop (11.75g). Do not exceed one full scoop in a 24-hour period.

Can I Use INFRNO Before an Evening Workout?

Yes. INFRNO is completely stimulant-free, with no caffeine or other stimulants. It's designed for any time of day, including evening training, so you can support your workout without relying on caffeine.

Do You Offer a 30-Day Money-Back Guarantee?

Yes. Every order is backed by our 30-day money-back guarantee. If you're not satisfied with your purchase, contact our support team within 30 days of delivery and we'll help resolve the issue in line with our Refund Policy.

What Makes INFRNO Different From Traditional Pre-Workouts?

INFRNO is designed as a stimulant-free pre-workout option. It is intended for adults who want to follow a pre-workout routine without relying on caffeine.

Does INFRNO Contain Caffeine?

No. INFRNO is completely caffeine-free and stimulant-free. It's designed to support pump, hydration and performance without caffeine, making it suitable for people who train early, late, or simply want to avoid stimulants. Always check the product label for the latest ingredient and allergen information.

Is INFRNO Third-Party Lab Tested?

Yes. Every batch is independently third-party tested for quality and consistency before release.

How Many Servings Are In Each Tub?

Each tub provides 30 full servings, or up to 60 half servings, depending on your session. A full scoop (23.5g) delivers the complete formula, while a half scoop (11.75g) can be used for lighter training sessions.

STILL DECIDING?

30-day money-back guarantee. UK made, third-party tested, and every key active dosed and disclosed above.

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