GBP · £
USD · $
EUR · €
CAD · C$
AUD · A$
Andarine S4 25mg
Andarine (S4) is a partial AR agonist. 25mg x 60. Used to hold lean tissue on a cut. Plan PCT after.
Subscribe for updates
This product is currently out of stock. Leave your email and we will notify you when Andarine S4 25mg is back.
You'll earn 44 points on this order
Andarine (S4) is a non-steroidal SARM. It binds the androgen receptor, then only partly activates it. 25mg per capsule. 60 capsules per bottle.
S4 sits on androgen receptors in muscle and bone and only partly turns them on. That is the mechanism. It is not a steroid, not a diuretic, and not Cardarine.
It is used on cuts to hold the muscle you already have while food comes down. It does not burn fat. The deficit, training and protein still do that job.
Andarine is a partial agonist. S23 is a full agonist. Different molecules, different recovery. Do not treat S4 as a weaker S23.
Yes on longer or higher windows. S4 still occupies the androgen receptor, so own testosterone can fall. Plan Recharge after, then bloodwork.
Every batch is independently tested by a third-party lab before it is released for sale. Research products sold by APH Science are strictly for research purposes only and are not intended for human consumption. Consult a healthcare professional before use.
Are you currently natural (no PEDs / SARMs)?
What's your main goal right now?
Testimonials
Key benefits
Strength + Power
Andarine S4 binds selectively to androgen receptors in muscle and bone, driving strength and power. Typical dose 25mg oral, split twice daily.
How it works
Lean Mass
Holds lean muscle on a cut while supporting fat loss. Known for muscle hardness and vascularity: a defined look, not scale weight.
How it works
PCT Required
S4 suppresses natural testosterone. Plan PCT before you start: Recharge 2.0 (clomiphene 25mg + zinc citrate 15mg) after the cycle.
Try now
Strength + power
Andarine S4 is a SARM known for increasing strength and lean muscle mass. It binds selectively to androgen receptors in muscle and bone, so the signal goes where you train, not to the rest of the body. Typical dose 25mg oral, split into two doses across the day. 60 capsules.
-
Strength firstS4 is the strength-and-hardness SARM. Strength moves first, look follows.
-
Muscle and bone onlySelective androgen receptor binding in muscle and bone tissue.
-
25mg capsuleSplit into two doses through the day due to the short half-life.
Lean mass
S4 holds lean muscle while body fat comes down, which is why it anchors cutting cycles. The look it is known for: muscle hardness and vascularity, a more defined physique rather than scale weight. It supports fat loss while keeping the muscle you built.
-
Holds muscle on a cutLean muscle retention while body fat drops. That is the S4 job.
-
Hardness and vascularityThe defined look: harder, more vascular muscle, not a puffy scale jump.
-
Fat loss supportSupports fat loss alongside muscle retention for a sharper physique.
PCT required
Andarine S4 suppresses your natural testosterone, especially at higher doses or longer cycles. Plan your post-cycle therapy before you start: Recharge 2.0 (clomiphene 25mg + zinc citrate 15mg) is the APH PCT built for exactly this. Run it after the cycle to restart your own production.
-
Suppression is realS4 suppresses natural testosterone. Plan for it before you start.
-
Recharge 2.0The APH PCT: clomiphene 25mg + zinc citrate 15mg, built for SARM cycles.
-
Run it afterPCT runs after the cycle to restart your own production.
Product FAQs
Contact us Contact usWhat is Andarine (S4)?
Andarine (S4) is a non-steroidal SARM and a partial androgen-receptor agonist. 25mg per capsule. 60 capsules per bottle.
How does Andarine work?
It binds androgen receptors in muscle and bone, then only partly activates them. Not a steroid. Not a diuretic. Not a fat burner.
Does Andarine require PCT?
Yes on longer or higher windows. Plan Recharge after, then bloodwork.
Is this for human consumption?
No. Research products are for laboratory research only. Consult a qualified professional and follow your institutional rules.
Andarine vs S23?
Andarine is a partial agonist. S23 is a full agonist. Different molecule, different recovery. Do not treat S4 as a weaker S23.
Selectivity and tissue targeting
Many SARMs are studied for preferential action in muscle and bone versus broader androgen effects. Exact selectivity depends on the molecule - do not assume every SARM behaves like every other.
What does the labelled dose mean?
Follow the product label. Catalogue reference: 25mg. Use only as intended for the product category on this page.
Storage
Keep sealed, cool, and dry away from direct light. Follow any lot-specific storage guidance included with your order.
Can it be stacked with other research products?
Yes in the sense that multi-compound research is common - but stack design is your protocol responsibility. Use the product pages and literature, not social media cycle sheets, as the source of truth.
What makes Andarine different in the APH catalogue?
Andarine (S4) was one of the first SARMs studied, built to hold lean muscle through a cut. Milder than S23 or RAD-140, still androgenic, so a standard PCT is recommended after a cycle.
Who typically buys Andarine?
Buyers usually arrive looking for a specific training or research goal and want a labelled, consistently supplied product from a UK-facing brand. Andarine should be chosen only when it matches that goal and the product category on this page.
If you are unsure, use the on-page quiz (where shown), read the FAQs, or contact support before ordering multi-bottle quantities.
How should I store Andarine?
Store Andarine sealed in a cool, dry place away from direct sunlight, moisture, and heat sources. Keep out of reach of children. Do not use if the seal is broken or the product looks compromised.
Follow any extra storage notes on the label (for example cold-chain guidance on certain research formats).
Is this suitable to stack with other APH products?
Many customers build multi-product carts (for example a primary compound plus recovery support). Whether Andarine fits a stack depends on the product class and your goal - use the description, FAQ, and quiz on this page as a starting point.
This is catalogue guidance only, not medical advice. When in doubt, keep the stack simple and verify compatibility yourself.
What makes APH Science different for this product?
Andarine (S4) was one of the first SARMs studied, built to hold lean muscle through a cut. Milder than S23 or RAD-140, still androgenic, so a standard PCT is recommended after a cycle.
What dose is on the Andarine label?
Use the milligram dose printed on the bottle and this page.
Can I stack Andarine with other APH products?
Stack only what matches this product class. Check the description on this page rather than generic recovery or strength copy from another SKU.
This is catalogue guidance only, not medical advice.
What shipping and cart benefits apply when I buy Andarine?
Andarine counts toward free UK shipping over £100, free protein gift thresholds, and next-day gift tiers in the same cart as every other APH Science product. Discrete packaging is standard. Tracked options are available at checkout depending on destination and service level.
How should I store Andarine after delivery?
Store Andarine in a cool, dry place away from direct sunlight and moisture. Keep the bottle closed between uses. Do not use past any stated best-before guidance on the pack. If the product is a research peptide vial rather than a capsule bottle, follow the dry-storage and reconstitution notes on that product page instead.
Is Andarine suitable for beginners?
If you are new to this category, start by reading the full product description, FAQ, and any dosage or research framing on the page. Andarine is positioned for buyers who already understand the compound class - not as a casual everyday multivitamin. When in doubt, choose a lower entry point or speak to a qualified professional before use.
Does Andarine qualify for subscribe and save or bulk pricing?
Where multi-bottle or bulk tiers are shown on the product page, the unit price drops as you increase quantity - that is the live price you add to cart. Subscription options appear only when configured for that SKU. Always check the buy box on Andarine for the current offer rather than assuming a sitewide discount code applies.
What should I do if I have a question about my Andarine order?
Contact APH Science support with your order number and the product name (Andarine). Typical queries include delivery timing, batch documentation, and stacking advice. Response times are usually within one business day on UK working days.
Where do you ship from?
Orders dispatch from the UK with tracked shipping options. Free UK shipping applies on carts over £100.
How long does delivery take?
Timing depends on the service selected at checkout and courier performance. You will receive tracking when the order leaves the warehouse.
How are orders packed?
Orders are dispatched from the UK with standard e-commerce packing. Tracking is provided so you can follow the parcel in transit.
Is every batch third-party tested?
APH Science targets independent lab verification for research batches before release. Certificate or purity paperwork can be requested where available for your lot.
How do bulk buy discounts work?
Where Buy 1 / Buy 2 / Buy 3 tiers appear on the product, choosing a higher tier applies the stated saving at add-to-cart. The price on the button updates to match the selected tier.
How do I track an order?
Use the Track order page with your order details once you have confirmation and tracking. Contact us if a label has not appeared within the expected dispatch window.
How fast do UK orders ship?
Orders typically leave the UK warehouse within 1–2 working days. Free UK shipping applies over £100. International options depend on destination and product type - checkout shows available rates.
All orders use discreet outer packaging. Tracking is provided once the parcel is with the carrier.
Can I get batch / CoA documentation?
Where certificates of analysis or batch documentation are available for a product, APH Science can supply them on request. Include your order number and product name when contacting support.
Keep screenshots of the product page and your invoice for your own records if your lab requires them.
