99%+ Pure Compounds – Lab Verified | UK Manufactured | Only £54.95
High Purity Stacked AF – 4 Way Compound Formula
Stacked AF combines 4 widely referenced investigational compounds into a single, clearly dosed capsule format:
• 10mg MK-677 (Ibutamoren)
• 10mg MK-2866 (Ostarine)
• 10mg GW-501516 (Cardarine)
• 4.5mg LGD-4033 (Ligandrol)
Compound Overview
Stacked AF brings together 4 compounds that act through different biological mechanisms:
MK-677 (Ibutamoren)
has been widely studied for how it influences growth hormone signalling within the body. In controlled settings, it has been examined for its ability to:
- Increase measurable growth hormone (GH) and IGF-1 levels
- Support lean tissue development pathways
- Support fat metabolism signalling
- Support recovery-related hormonal activity
- Promote collagen-associated processes linked to skin and connective tissues
- Associated with better sleep quality in research settings
- Studied as an oral option instead of injectable GH
- Studied in relation to age-related hormone decline
MK-2866 (Ostarine)
In controlled settings, Ostarine has been examined for its ability to:
- Linked to increases in lean muscle tissue during calorie-controlled phases
- Associated with helping preserve muscle while dieting
- Studied for supporting strength-related performance markers
- Examined for its role in muscle maintenance during recovery periods
- Referenced in research exploring bone density signalling
- Known for selective activity in muscle tissue rather than the whole body
GW-501516 (Cardarine)
Cardarine has been widely studied for how it influences the body’s energy systems. In controlled settings, it has been examined for its ability to:
- Support the body’s shift toward using fat as a primary fuel source
- Enhance fat-utilisation signalling pathways
- Promote endurance-related signalling pathways
- Influence training volume tolerance
- Influence cellular energy efficiency
- Support lipid metabolism markers
- Enhance oxidative capacity in skeletal muscle
- Influence how the body manages fuel during calorie-controlled conditions
LGD-4033 (Ligandrol)
LGD-4033 has been widely studied for its selective interaction with muscle and bone tissue:
- Targets muscle receptors for focused lean tissue support
- Studied for its role in lean mass and strength signalling
- Selectively interacts with muscle and bone tissue
- Supports structural muscle development pathways
- Explored for muscle retention during calorie-controlled phases
- Known for its precision receptor activity profile
Mechanism Summary
Stacked AF combines:
• A compound examined for growth hormone pathway signalling
• A compound studied for how it influences the body’s energy systems
• Two compounds studied for selective androgen receptor interaction
Because these mechanisms differ, they are frequently analysed together when examining muscle-related and endocrine signalling systems in controlled environments.
Published scientific literature discussing MK-677, MK-2866, GW-501516, LGD-4033, and related signalling mechanisms can be accessed via the PubMed database.
Why Should You Choose Our Stacked AF?
- Third-party tested compounds with 99%+ purity, ensuring high quality and potency
- Excellent value at only £54.95 per 30 day supply
- Manufactured in a UK ISO 9001 certified facility under strict GMP quality controls
- Absolutely no ready-made imported capsules with zero quality control and over inflated prices
- Trusted by over 30,000 customers nationwide
Moreover we provide full transparency with up-to-date Certificates of Analysis available in the Data Sheet section so you know exactly what you’re getting.
Shipping & Packaging
- UK-based same day dispatch (if ordered before 4pm workdays)
- Fast and reliable 24hr trackable shipping
- Discreet and secure packaging
Stacked AF Further Reading
For additional educational context on the compounds and pathways referenced above, the following articles may be of interest:
MK-677 and Sleep Quality: What Research Examines — A research-focused discussion of MK-677 in literature relating to circadian hormonal rhythms and sleep-linked endocrine markers.
Ostarine Results: What to Expect from a Research Perspective — A neutral overview of how MK-2866 is referenced in controlled research settings and what researchers typically measure.
Cardarine and Fat Loss: What the Science Actually Says — An evidence-led discussion of GW-501516 in metabolic research contexts, focusing on PPAR-δ signalling models.
Customer Feedback
About our reviews
Verified customer reviews represent personal opinions and individual experiences. They should not be interpreted as scientific claims or advice.
This product is sold for laboratory research purposes only and is not intended for human consumption. Any references within reviews to effects, outcomes, or experiences should not be interpreted as medical advice.
April 28, 2026
I made my first order with Affordable Nutrition for Stacked AF which really is the “research booster” I’ve been looking for. Not only are their prices excellent, their service is excellent too. They updated me every step of the way from order to delivery, and my item arrived quickly and securely. Affordable Nutrition will be my first choice every time now. 5 stars from me
March 17, 2026
Great product and fast delivery highly recommend these
January 25, 2026
Finishing the cycle now and feeling great, strong and recovering fast. Definitely found my sessions improved with intensity and duration. If you’re feeling a slump in your training 100% worth giving a go 🙌🏾
November 20, 2025
Researched a full cycle including PCT to help transition off the gear and overall I’d say it’s a solid option. Once it builds up you get that familiar drive and feel-good factor without any of the bloat. It’s not as strong but then again that depends on how much you want to take. Results-wise I’d say that’s dose dependent but expect to make less gains. But you can offset that with an easier PCT on enclo, keep more of your gains (pleasant surprise) with none of the usual DHT and oestrogen issues. That said I’d defo run some liver support and keep cycle length sensible 60-90 days tops
September 12, 2025
Always great ordering from here, all the bells and whistles with this product, amazing value and quick dispatch/delivery 10/10
July 31, 2025
Finished my 8 week cycle of stacked af and wow it was brilliant. Felt amazing throughout, no side effects, was 83kg now I’m 88kg with minimal fat gain. Just over an inch added to my arms flexed in just 8 weeks. Constant PBs while on it and even after coming off I’m still just as strong, no drop in performance whatsoever noticed so far. Maybe the long workouts are a bit more sluggish but that’s to be expected.
I’ll be doing another cycle of this to drop to my desired body fat % next.
Also Anthony is THE BEST for any advice you may need, beginner to experienced he knows everything you’d need to know about this world so even if you’re maybe doubting I’d recommend just giving him an email and having a talk about it.
Couldn’t recommend it more tbh, excited for the next cycle!
June 26, 2025
Good all-in-one product, excellent value, everything you need to build muscle and lose fat at the same time with no sides that a normal PCT can’t sort
April 1, 2025
Works!!!
January 18, 2025
Perfect for recomping when you need a quality booster this time of year 👌
October 30, 2024
Definitely seeing my strength going up, awesome stuff
September 4, 2024
This supplement has definitely boosted me up massively as I have noticed feeling being more active and bulking up in the gym. As result I barely felt fatigue for while and I’m sleeping so much better. Definitely 100% buy it again when I run out
June 15, 2024
After my first ever cycle I'm very happy with the results. Can testify to more strength, size, endurance, better pumps and fat loss. I would definitely recommend this product to anyone wanting to make solid gains without taking anabolic steroids
March 22, 2024
Had some time off recently with some health issues and needed a kickstart to get my backside inside a gym again. I was recommended this by a work colleague who trains a lot and after just a week I started to feel changes. I'm now 4 weeks into an 8 week cycle and I'm see changes almost daily and pushing myself through some serious workouts. When I look back on each workout I sometimes wonder how I got through all that lol absolutely awesome stack can recommend to anyone struggling to get back on it
January 17, 2024
Best deal online!!!
October 31, 2023
Great combo, superb value and 100% legit! Took 2 caps every morning for 2 months and made solid progress with no side effects apart from being hungry but that seemed to wear off after a couple weeks
June 11, 2023
Good stuff
February 13, 2023
Amazing product! After recently becoming a father and over-indulging at Christmas I wanted to get back into shape. I was recommended this by a mate at the gym to combat the Dad Bod lol and its worked a treat. I’m making gains in every part of my training and have much more energy and enthusiasm to keep this up. Highly recommend.