Stacked AF: The Ultimate Research Stack with 4 Science-Backed Compounds in Clinical Doses
Stacked AF is a cutting-edge research stack featuring four proven performance-enhancing compounds in scientifically supported dosages. Designed for optimal results, it includes GW-501516 (Cardarine), MK-677 (Ibutamoren), MK-2866 (Ostarine), and LGD-4033 (Ligandrol)—each known for their distinct anabolic and performance-enhancing properties.
3rd Party Tested for Exceptional Purity
Stacked AF is independently tested to ensure maximum purity and safety:
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GW-501516 – 99.41% purity
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MK-677 – 99.54% purity
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MK-2866 – 99.84% purity
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LGD-4033 – 99.69% purity
(See latest Certificates of Analysis (COAs) in the Data Sheet section below.)
What’s Inside Stacked AF?
1. MK-2866 (Ostarine) – Lean Muscle Growth & Bone Protection
A powerful Selective Androgen Receptor Modulator (SARM), MK-2866 supports:
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Increased lean muscle mass
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Enhanced strength and endurance
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Improved bone density
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Reduced risk of fractures and injuries
2. LGD-4033 (Ligandrol) – Strength, Size & Recovery
Another potent SARM, LGD-4033 is ideal for:
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Boosting muscle gains and strength
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Reducing body fat
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Improving recovery time
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Supporting bone health
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Lowering inflammation and cardiovascular risks
3. GW-501516 (Cardarine) – Endurance & Fat Loss
A unique PPARδ agonist, Cardarine is not a SARM but often used alongside them for:
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Enhanced aerobic performance
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Fat burning and improved metabolic function
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Increased endurance and reduced fatigue
Popular with MMA fighters and endurance athletes, Cardarine is ideal for high-output training phases and weight-cutting cycles.
4. MK-677 (Ibutamoren) – Growth Hormone Booster & Anti-Aging
MK-677 is a growth hormone secretagogue, stimulating the body’s natural GH production. Benefits include:
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Increased muscle mass
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Faster recovery
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Fat reduction
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Improved sleep quality
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Stronger bones and joints
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Potential anti-aging effects (skin elasticity, reduced wrinkles)
Stacked AF Benefits at a Glance:
✅ Promote lean muscle growth
✅ Support fat loss and body recomposition
✅ Boost strength and power output
✅ Enhance endurance and performance
✅ Accelerate recovery time
✅ Support joint and bone health
✅ Improve overall wellbeing and hormone balance
Purity, Safety & Quality Assurance
At Affordable Nutrition, we’re committed to delivering products that meet the highest standards of purity, safety, and transparency. Our Stacked AF is:
✅ Manufactured in the UK in an ISO-certified facility, following strict GMP (Good Manufacturing Practice) guidelines
✅ Lab-tested for identity, purity, and the absence of harmful contaminants
✅ Securely and discreetly shipped via Royal Mail Tracked 24 for fast, reliable delivery
Note: Stacked AF is intended for research purposes only. This product is not approved by the FDA for human consumption.
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
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
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.