STROMUSC Andarine S4 25mg*100 For Bodybuilding CAS:401900-40-1

    What is Andarine S4? The Molecular Maverick

    Andarine S4, developed originally by GTx, Inc., was initially investigated as a therapeutic agent for conditions like muscle wasting (cachexia), osteoporosis, and benign prostatic hyperplasia (BPH). Its design was a triumph of targeted pharmacology: to elicit anabolic responses in bone and muscle tissue while exhibiting minimal activity in the prostate and other androgen-sensitive organs-a common downfall of traditional anabolic-androgenic steroids (AAS).

    Chemically, S4 is an aryl-propionamide derivative. Its "selectivity" is its defining characteristic. Unlike testosterone, which freely binds to and activates androgen receptors (AR) throughout the entire body, S4 demonstrates tissue-specificity. It acts as a partial agonist in anabolic tissues like muscle and bone, meaning it partially activates the AR to stimulate protein synthesis and strength gains. Conversely, in tissues like the prostate, it can act as an antagonist, blocking full androgenic activation and thereby mitigating side effects. This partial agonism is a critical differentiator from newer, fuller agonists like RAD-140 (Testolone) and is key to understanding its unique effect profile.

    While many SARMs are touted for sheer mass, Andarine S4's feature set carves out a different, highly valued niche:

    1.The "Hardening" and "Drying" Effect: S4 is renowned for its ability to drastically reduce subcutaneous water retention. This doesn't just create a leaner appearance; it leads to a state of extreme muscle density and hardness. Muscles take on a grainy, striated look, often described as being "carved from stone."

    2.Pronounced Vascularity: By promoting a dry, lean physique, S4 makes vascularity far more prominent. This is a highly sought-after aesthetic in competitive bodybuilding, particularly during pre-contest phases.

    3.Moderate but Quality Muscle Gains: Unlike bulking compounds, S4 does not typically cause dramatic weight gain. Instead, users report slow, steady increases in lean, contractile tissue. The gains are "dry," meaning they are not obscured by water or fat, making them highly visible and sustainable.

    4.Significant Strength Enhancement: Users consistently report notable strength increases, particularly in the 3-6 rep range. This is attributed to its direct action on the AR in muscle tissue, enhancing neurological efficiency and contractile protein synthesis.

    5.The "Yellow Vision" Side Effect: A unique and almost diagnostic feature of S4 is its transient visual side effect. Users may experience a temporary yellow tint to their vision, particularly in low-light conditions, and a slower adjustment time when moving from dark to bright environments. This is due to S4's interaction with ARs in the retina. While disconcerting, it is almost always reversible upon cessation and is dose-dependent.

    Understanding S4's features dictates its strategic application:

    ●Pre-Contest Cutting Phase: This is S4's primary and most effective application. In the 4-8 weeks leading up to a competition or photoshoot, bodybuilders use S4 to achieve that final level of dryness, hardness, and vascularity that separates amateurs from pros. It helps shed the last layers of subcutaneous water, making the skin appear paper-thin over the muscle.

    ●Recomposition Cycles ("Recomp"): For athletes seeking to simultaneously lose fat and gain a small amount of muscle, S4 is an excellent choice. Its ability to preserve, or even build, lean mass while in a caloric deficit makes it ideal for off-season refining or for those who wish to stay relatively lean year-round.

    ●Strength-Focused Phases: Powerlifters and strength athletes may utilize S4 during training blocks to break through plateaus without the significant water weight and bloating associated with other compounds, allowing them to stay within a specific weight class.

    Beyond the standard list of benefits, a deeper analysis reveals:

    ●Cognitive Clarity from a "Dry" State: Unlike compounds that cause estrogen-related water retention (which can lead to brain fog and lethargy), the dry state induced by S4 is often accompanied by a sense of heightened cognitive clarity and well-being. The physical "tightness" translates to a mental sharpness for many users.

    ●Joint Integrity in a Novel Way: While S4 does not aromatize and therefore doesn't provide the joint-cushioning effect of estrogen, its strong anabolic effect on connective tissues can potentially strengthen tendons and ligaments. This is a double-edged sword; joints may feel more "brittle" without the water cushioning, but structurally, they may be reinforced.

    ●The "Feedback Loop" of Vascularity: The pronounced vascularity isn't just aesthetic. For many, it provides a powerful psychological feedback loop during training. Visibly engorged veins can enhance the mind-muscle connection and training intensity, creating a positive cycle of performance.

    The 25mg dosage is the foundational starting point for S4. However, a novel approach to dosing is critical due to its short half-life and visual side effects.

    ●Initial Phase (Weeks 1-2): Begin with 25mg per day, split into two doses of 12.5mg approximately 8-10 hours apart (e.g., 7 AM and 5 PM). This stabilizes blood levels and mitigates peak-side effects.

    ●Titration Phase (Week 3+): After assessing tolerance (primarily to the visual sides), the dose can be carefully increased. A common and effective protocol is to increase to 50mg per day, split into three doses (e.g., 17mg, 16mg, 17mg) to account for the short half-life. Some advanced users may push to 75mg, but the law of diminishing returns and the increased risk of sides apply sharply beyond this point.

    ●The "Pulse Dosing" Alternative: A more advanced strategy to manage sides is "pulse dosing." This involves taking a full daily dose (e.g., 25-50mg) only on training days, approximately 60-90 minutes before the workout. On rest days, the user takes nothing or a minimal dose. This leverages the compound's strength-enhancing properties when they are most needed while giving the body's ARs, and specifically the retinas, a regular break.

    A standard S4 cycle lasts 6-8 weeks. Its exceptionally short half-life of approximately 4-6 hours is a pivotal factor in cycle design.

    ●Short Half-Life Implications:

    ○Pros: Rapid onset of action (effects are often felt within days). Quick clearance from the body if side effects become unmanageable.

    ○Cons: Requires multiple daily doses to maintain stable blood levels and avoid "ups and downs." The effects (and sides) can be pulsatile if dosing is inconsistent.

    ●Exemplar Cycle for a Cutting/Recomp Goal (8 Weeks):

    ○Weeks 1-2: Andarine S4 - 25mg/day (split into two doses).

    ○Weeks 3-8: Andarine S4 - 50mg/day (split into three doses).

    ○Supporting Compounds: S4 is often stacked for synergistic effects. A classic stack includes Cardarine (GW-501516) at 10-20mg/day. Cardarine is not a SARM but a PPARδ agonist that dramatically enhances endurance and fat oxidation, perfectly complementing S4's hardening effects and mitigating potential cardio lethargy.

    The term PTC (Post-Therapy Care) is more encompassing than the traditional PCT (Post-Cycle Therapy), as it addresses not just hormonal recovery but overall physiological restoration.

    S4 is suppressive to the Hypothalamic-Pituitary-Testicular Axis (HPTA), meaning it will lower natural testosterone production. The degree is dose and duration dependent, but it is not a "shutdown" as severe as with steroids. A targeted PTC is non-negotiable.

    ●The PTC Protocol (Commencing 24 hours after the last S4 dose):

    ○Core Component: A Selective Estrogen Receptor Modulator (SERM) like Nolvadex (Tamoxifen Citrate) or Clomid (Clomiphene Citrate).

    ○A Novel 4-Week Protocol:

    ◇Week 1: Nolvadex 20mg daily OR Clomid 50mg daily.

    ◇Weeks 2-4: Nolvadex 10mg daily OR Clomid 25mg daily.

    ○Beyond Hormones - Comprehensive PTC:

    1.Blood Work: The cornerstone of intelligent PTC. Pre-cycle and post-PTC blood tests (Testosterone Total/Free, LH, FSH, HDL/LDL, Liver Enzymes) are essential to gauge recovery accurately.

    2.Liver Support: Despite being oral, S4 is not notably hepatotoxic like methylated steroids. However, a support supplement containing NAC (N-Acetyl Cysteine) and TUDCA is a prudent measure for overall health.

    3.Cardiovascular Support: S4 can negatively impact HDL (good) cholesterol. Post-cycle, implementing a regimen of fish oil (3-5g daily), soluble fiber, and coenzyme Q10 is critical for lipid profile recovery.

    4.Natural Testosterone Boosters: After the SERM protocol, supplements like Ashwagandha, Zinc, and Vitamin D can provide a gentle, natural nudge to the HPTA and aid in well-being.

Brand	STROMUSC
Trade names	Acetamidoxolutamide; Androxolutamide; GTx-007; S-4
CAS	401900-40-1
Molar mass	441.363
Formula	C19H18F3N3O6
Purity	Above 98%
Apprarance	25mg*100

 

 

Any needs, please contact us

Email: Jasonraws106@gmail.com

WhatsApp: +86-15572565525
Telegram: +86-15871669785

   

                                   

 

    Andarine S4 is not a mass-building sledgehammer; it is a precision chisel. Its value lies not in sheer volume, but in quality, detail, and definition. For the bodybuilder who has built a substantial foundation and is seeking to refine, harden, and unveil the intricate details of their physique, S4 remains a powerful and unique instrument. Its distinctive profile-marked by dramatic hardening, unparalleled vascularity, and its self-identifying visual side effect-demands respect, careful management, and a strategic, informed approach. When used correctly within a well-planned cycle and a meticulous PTC protocol, it can deliver the polished, stage-ready condition that is the ultimate goal of the dedicated iron athlete.

Hot Tags: stromusc andarine s4 25mg*100 for bodybuilding cas:401900-40-1, China stromusc andarine s4 25mg*100 for bodybuilding cas:401900-40-1 manufacturers, suppliers, factory, MK677 growth hormone secretion, OTR AC Gain muscle mass, RAD150 Promotes muscle growth, GW0742 Hormone and Metabolic Regulators, GW0742, LGD3303