Description
S4 Andarine + Cardarine Stack combines S4 Andarine and GW501516 in one product, sold as capsules. Each batch is checked for 99%+ purity. It’s intended for research use only.
Inside S4 Andarine + Cardarine Stack
S4 Andarine
S4 (andarine, also GTx-007) is one of the first nonsteroidal SARMs, developed by GTx Inc. alongside ostarine. It’s a partial agonist at the androgen receptor, and in rats it built muscle and bone while having much less effect on the prostate.
S4 binds the androgen receptor as a partial agonist. In muscle and bone it gives close to a full response, while in the prostate it gives a weaker one, and in the presence of full androgens it can even compete with them there.
GW501516
GW501516 (cardarine) is a PPAR-delta agonist developed by GlaxoSmithKline and Ligand in the 1990s. It’s often sold next to SARMs, but it works through a different receptor, one that switches on fat-burning genes in muscle.
PPAR-delta is a nuclear receptor. When GW501516 binds it, it pairs with the retinoid X receptor and switches on genes for taking up and burning fatty acids, such as CPT1 and PDK4.
Why S4 Andarine + Cardarine Stack combines these compounds
Labs pair these compounds because each works through a different pathway, so combining them covers more of the system in one study. A fixed mix also means one product, one label and no drift between separate containers.
S4 Andarine + Cardarine Stack research background
Gao and colleagues reported in Endocrinology in 2005 that S4 restored muscle and bone in castrated rats. Kearbey and colleagues later showed it reduced bone loss in ovariectomized rats.
Narkar and colleagues showed in Cell in 2008 that GW501516 combined with exercise or with AICAR raised running endurance in mice and shifted muscle toward slow-twitch fibers.
For the original studies, start with this PubMed search for S4 Andarine and GW501516.
Options and prices
This listing is a bottle of 60 capsules, 40mg each, for $110.38.
Capsules hold a measured amount each, listed in the size option with the count and total.
Study design notes
SARM research usually looks at lean mass, bone density, strength and hormone markers such as testosterone, LH and FSH in animal models. Liver enzymes and lipids are worth tracking too.
Because these compounds suppress the body’s own hormone signals, many study designs include a recovery period after exposure ends. Castrated or aged rodent models are common for muscle and bone work.
The classic rodent readout compares levator ani muscle weight with prostate weight, which shows how tissue-selective a compound is. Body composition scans and hormone blood work usually sit alongside it.
S4 Andarine + Cardarine Stack product details
- Contains: S4 Andarine and GW501516
- Forms: capsules
- Size: 40mg per capsule/60ct/2.4g
- Purity: 99% or higher, verified by first- and third-party testing
- Use: laboratory research only
How we test each batch
We test each batch for identity and purity before it ships, using HPLC and mass spectrometry, with independent third-party checks on top of our own.
The batch number on the label matches the certificate of analysis. If your lab keeps paperwork on file, ask us for it and we’ll email it over.
Storage and shelf life
Keep the container sealed at room temperature, away from heat, moisture and sunlight. Note the batch number and the date you opened it in your lab records.
Safe handling
Wear gloves and eye protection when you open or measure it, and work on a clean surface.
Label everything you prepare, keep it away from food areas, and follow your lab’s rules for disposing of sharps and chemical waste.
Supplies to have on hand
- nothing extra for capsules or tablets, as each unit is pre-measured
- a dry, sealed container if you split a bottle between projects
Often ordered alongside
- RAD-150 (TLB 150): RAD-150 (also sold as TLB-150) is an ester of RAD-140.
- YK-11 (Myostine): YK-11 is a steroidal compound built on a dihydrotestosterone backbone, first described by Japanese researchers in 2011.
- RAD-140 + MK-677 + YK-11 Value Pack, combining RAD-140, MK-677 and YK-11
- LGD-3303: LGD-3303 is a nonsteroidal SARM from Ligand Pharmaceuticals.
- Ligandrol (LGD-4033): LGD-4033 (ligandrol, also coded VK5211) is a nonsteroidal SARM discovered by Ligand Pharmaceuticals and later licensed to Viking Therapeutics.
You can also browse our full SARMs and metabolic research compounds pages.
S4 Andarine + Cardarine Stack questions
Is S4 Andarine + Cardarine Stack in stock?
Yes. It’s in stock and ships from our warehouse after your order clears.
Does it come with a certificate of analysis?
Yes. Every batch is tested, and we’ll email the certificate of analysis for your batch number on request.
Can it be used in people or animals?
No. It’s sold for laboratory research only and isn’t approved for human or veterinary use.
What’s in S4 Andarine + Cardarine Stack?
S4 Andarine and GW501516. The section above covers each one.
How should I store it?
Follow the storage section above. In short: cold and dark for freeze-dried vials, room temperature and dry for capsules, tablets, powders and liquids, unless the label says otherwise.
Order S4 Andarine + Cardarine Stack today
Order S4 Andarine + Cardarine Stack now for $110.38. It’s in stock, and checkout takes about two minutes.
Need more for the same project? Have a look at our SARMs and metabolic research compounds.
For laboratory research use only. Not for human or veterinary use. These statements have not been evaluated by the FDA.
Reviews
There are no reviews yet.