Andarine (S4)
Advanced Cutting SARM
£45.00
What’s Included
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60 capsules per bottle -
25mg pure S4 per capsule
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2-month supply (1 cap daily)
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Third-party lab certificate included
Lab Tested
Third-party verified
Fast Shipping
3-7 business days
24/7 Support
Expert guidance
Product details
Buy Andarine UK: CORE supplies Andarine (S4) in the UK as 60 x 25mg capsules, third-party lab tested, with the certificate included.
Andarine S4 is a powerful selective androgen receptor modulator specifically designed for cutting phases and body recomposition. Known for its exceptional ability to preserve muscle mass while promoting fat loss, S4 is the ideal choice for achieving a lean, defined physique.
Our pharmaceutical-grade Andarine S4 is manufactured under strict quality controls and third-party tested for maximum purity. Each capsule contains 25mg of pure S4, providing optimal cutting support and muscle preservation effects.
Research & Usage Context
Andarine (S-4) has been widely studied for its interaction with androgen receptors and its potential role in influencing body composition. It has been one of the first researched SARMs due to its selective mechanism – it may potentially impact fat loss and muscle building without affecting other tissues and organs.
Because of this profile, Andarine (S-4) is often associated with phases focused on improving overall body composition, especially if maintaining lean tissue while reducing body fat is the main goal. However, it may require further human research to establish the exact potential benefits.
Browse our cutting and fat loss compounds.
What is post-cycle therapy?
Active Ingredients
Purity & Quality
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Third-party lab tested -
98.8%+ purity guaranteed -
24-month shelf life
Andarine S4 works by selectively binding to androgen receptors in muscle and bone tissue, promoting anabolic activity while supporting fat oxidation. This dual action makes it particularly effective for cutting phases where maintaining muscle while losing fat is crucial.
The compound increases protein synthesis and prevents muscle catabolism during caloric restriction, while simultaneously enhancing lipolysis and fat burning. S4’s unique properties also improve vascularity and muscle hardness, creating a more defined appearance.
With a half-life of 4-6 hours, Andarine provides consistent support when taken multiple times throughout the day, making it highly effective for cutting goals.
Key Actions
Andarine’s most talked-about side effect is a temporary yellow tint to night vision, which fully resolves once you stop taking it. If you’re new to cutting compounds, our Complete Beginner’s Guide to SARMs is a good place to start.
Real results from real customers
Transformations from verified customers. Individual results vary.
Reviews
Rated 5 by verified UK buyers.
What are the Key Benefits of Andarine (S4)?
Enhanced fat loss
Muscle preservation
Improved strength
Better vascularity
Lean muscle gains
Enhanced recovery
How to Use Andarine (S4)?
Dosage
25mg once daily
Timing
Take with the morning meal
Cycle Length
8-12 weeks followed by a 4-week break
Important
Dietary supplement use only
Ideal for cutting phases. Can be split into smaller doses throughout the day for sustained effects.
Training
Keep intensity high even in a deficit. Focus on muscle contraction and blood flow through every set.
Diet
Eat at a moderate deficit. Keep protein high to protect muscle, and drink plenty of water, since dehydration worsens Andarine's vision side effect.
Stacking and cycle guidance
Andarine fits well into cutting-focused protocols depending on your research goals. Pick a single companion below to stack with Andarine and save 5%:
Cardarine (GW501516) + Andarine (S4)
Cutting: Cardarine's fat-burning support pairs with Andarine's hard, dry look for a complete cutting stack.
£90.25 £95.00 Save 5%
Andarine 25-50mg each morning. Cardarine 5-10mg, 1-2 hours before training. Run together for 6-8 weeks. PCT required for the Andarine portion.
Ostarine (MK2866) + Andarine (S4)
Cutting: Ostarine adds extra muscle protection alongside Andarine's harder, more vascular look.
£85.50 £90.00 Save 5%
Andarine 25-50mg + Ostarine 15-20mg, both once daily each morning. Run together for 6-8 weeks. PCT required after.
S23 (SARM) + Andarine (S4)
Advanced cutting: S-23 intensifies fat loss and hardening on top of Andarine, built for advanced cutting cycles.
£85.50 £90.00 Save 5%
Andarine 25-50mg + S-23 10-20mg, both once daily each morning. Run together for 6 weeks. PCT mandatory after.
SR9009 (Stenabolic) + Andarine (S4)
Cutting and endurance: SR-9009 adds a metabolic boost that complements Andarine's cutting effect.
£85.50 £90.00 Save 5%
Andarine 25-50mg each morning. SR-9009 10-20mg, split into 2-3 daily doses. Run together for 6-8 weeks. PCT required for the Andarine portion.
The CORE SARMS Handbook walks through dosing, cycle length, and stacking logic for every compound on this page.
Read the CORE SARMs Handbook →Post-cycle support
Frequently Asked Questions
Contact supportAndarine S4 is a selective androgen receptor modulator designed for cutting, fat loss, and muscle preservation.
Yes, S4 is excellent for cutting phases as it helps preserve muscle mass while promoting fat loss and improving muscle definition.
While primarily a cutting SARM, S4 can support lean muscle gains, especially when combined with proper nutrition and training.
Users typically experience enhanced fat loss, improved muscle definition, better vascularity, and preserved muscle mass during cuts.
Users have occasionally reported changes in vision, mild fatigue, or hormonal fluctuations. These effects are anecdotal and vary by individual.
Yes, follow recommended cycle lengths with breaks to maintain effectiveness and allow your body to recover.
Andarine (S4) is typically taken once or twice daily due to its shorter half-life of around 4-6 hours. Most users divide their daily dosage into two equal parts, one in the morning and one in the evening, to maintain stable levels in the body. The usual dosage ranges from 25 mg to 50 mg per day, depending on experience and fitness goals. Always start with a lower dose to gauge tolerance and adjust gradually.
For best results, take Andarine S4 at consistent times each day, ideally with meals to improve absorption. If you’re splitting doses, take half in the morning and half in the evening. Consistency is key for maintaining optimal plasma concentration and achieving steady performance and physique gains throughout your cycle.
Andarine (S4) has a half-life of approximately 4-6 hours, meaning it remains active in the body for about 24-36 hours after the last dose. However, complete elimination from the system may take 2-3 days, depending on dosage, frequency, and individual metabolism. Because of its shorter half-life, split dosing is preferred to maintain stable results and reduce fluctuations in energy or vision-related side effects.
Like most SARMs, Andarine usually takes 1-2 weeks to show initial effects. The peak potential benefits may be visible after around 8 weeks. This is why the recommended cycle length is 8-12 weeks.
You can buy Andarine UK directly from CORE. Each bottle holds 60 x 25mg Andarine (S4) capsules with a third-party lab certificate included. UK orders typically arrive in 3-7 business days.
Looking for something else?
Is your primary goal muscle strength? Explore other options and see RAD-140 (Testolone) available at CORE SARMS.
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