Stanozolol Stanoplex XT Labs 100 / 20 ml USA

What Is Stanozolol Stanoplex XT Labs 100 / 20 ml?

Stanozolol is a synthetic, non-aromatizable anabolic-androgenic steroid (AAS) derived from dihydrotestosterone (DHT). It was historically prescribed for hereditary angioedema(1); in sports it is a prohibited substance. Mechanistically it binds the androgen receptor, promoting protein synthesis and nitrogen retention without conversion to estrogen. PubChem+1

Important: In many countries, non-prescribed possession or use of stanozolol is illegal and banned in sport at all times(2). Wada-Ama

Clinical Indications, Legal Status & Anti-Doping Policy for Stanozolol Stanoplex XT Labs 100 / 20 ml

Stanozolol has limited, historical medical use and a well-defined regulatory and anti-doping profile. This section clarifies when and why it was prescribed, outlines high-level legal considerations, and summarizes anti-doping rules relevant to competitive athletes. It is not an endorsement of non-medical use.

Historical/Clinical Indications (Context Only)

Stanozolol was historically prescribed for select indications such as hereditary angioedema and certain catabolic states under physician supervision. Modern availability for these uses varies by country, and safer or more targeted alternatives are commonly preferred in current practice. Any therapeutic use requires a valid prescription, individualized risk–benefit assessment, and ongoing laboratory monitoring.

Legal Status (High-Level Overview)

• Prescription-only in many jurisdictions; non-prescribed possession, distribution, or importation can be illegal and subject to penalties.

• Regulatory classifications differ by country (e.g., controlled substances vs. prescription medicines). Readers must verify local laws before considering any possession or use.

• Products from underground labs (including performance-market brands) may not meet pharmaceutical-grade standards for identity, potency, sterility, or particulate burden—raising safety and quality concerns.

Anti-Doping Policy & Detection Considerations

• Stanozolol is prohibited at all times (in- and out-of-competition) under major anti-doping codes.

• Detection windows can extend weeks after last use, depending on dose, duration, matrix, and analytical methods.

• Testing includes urine (primary) and, in some settings, blood. Athletes should assume zero tolerance and that Therapeutic Use Exemptions (TUEs) are exceedingly unlikely for performance purposes.

• Risk of inadvertent doping from contaminated supplements exists; strict supplement quality assurance (e.g., third-party tested products) is essential for tested athletes.

Clinician-Style Cautions (Non-Prescriptive)

• Individuals with liver disease, significant dyslipidemia, uncontrolled hypertension, cardiovascular disease, pregnancy, or under 21 are at elevated risk and should not use anabolic steroids outside a legitimate medical context.

• Non-medical use is associated with hepatotoxicity, atherogenic lipid shifts, HPT-axis suppression, tendon stress, and neuropsychiatric effects.

• If exposure has occurred, harm-reduction monitoring (liver panel, lipids, CBC, BP/HR) and prompt evaluation for jaundice, dark urine, RUQ pain, severe fatigue, pruritus are advised.

Who Should Not Use It: Contraindications & Precautions

Stanozolol Stanoplex XT Labs 100 / 20 ml carries significant risks, and certain populations face particularly high danger from exposure. The following contraindications and precautions are summarized from clinical literature on anabolic-androgenic steroids and should be considered absolute or relative exclusions.

Absolute Contraindications

• Pre-existing liver disease: Chronic hepatitis, cirrhosis, nonalcoholic fatty liver disease, or prior steroid-induced cholestasis dramatically increase the likelihood of severe hepatic injury.

• Significant dyslipidemia or atherosclerotic cardiovascular disease: Because stanozolol produces some of the most pronounced HDL suppression and LDL elevation of any anabolic steroid, individuals with established cardiovascular disease or uncontrolled hyperlipidemia face extreme risk.

• Pregnancy and breastfeeding: Exposure carries a high risk of virilization in the fetus and adverse outcomes in nursing infants.

• Children and adolescents: Anabolic steroids can prematurely close epiphyseal growth plates, disrupt puberty, and impair normal endocrine development.

• History of androgenic-severe adverse reactions: Prior severe acne, androgenic alopecia, or virilization are strong warnings against further use.

Relative Contraindications

• Hypertension or borderline blood pressure: Stanozolol elevates BP through vascular and renal mechanisms, compounding risk of stroke or heart attack.

• Renal impairment: Increased fluid shifts, hypertension, and altered creatinine clearance may worsen kidney outcomes.

• Psychiatric vulnerability: Individuals with pre-existing anxiety, mood disorders, or aggression risk destabilization from neuropsychiatric side effects.

• Male infertility concerns: Suppression of LH/FSH can impair spermatogenesis; recovery is unpredictable and sometimes incomplete.

• Family history of hormone-sensitive cancers: Although stanozolol does not aromatize, androgenic signaling may still be a concern in those predisposed to prostate or certain breast cancers.

General Precautions

• Even in otherwise healthy users, cycle duration should be limited (6–8 weeks maximum) to reduce cumulative hepatic and cardiovascular strain.

• Concomitant hepatotoxins (alcohol, acetaminophen, certain antifungals/antibiotics) should be avoided due to additive risk.

• Users should be educated to stop immediately if jaundice, RUQ pain, dark urine, severe fatigue, or pruritus appear.

• Female athletes are especially vulnerable to irreversible virilization at even low exposures; high-concentration vials (100 mg/mL) are not suitable for women.

Why the 20 mL Format of Stanozolol Stanoplex XT Labs 100 / 20 ml Matters

A 20 mL multi-dose vial (often labeled 100 mg/mL) provides a larger total volume than typical 10 mL vials, which—where lawful—can reduce the number of vial changes across a cycle and simplify inventory control. Practically, users report fewer interruptions mid-cycle and fewer punctures per vial when employing proper sterile technique. (This is a descriptive note, not an endorsement.)

Pharmacology & Expected Effects with Stanozolol Stanoplex XT Labs 100 / 20 ml

Stanozolol, the active compound in Stanoplex XT Labs 100 / 20 ml, is a synthetic anabolic steroid derived from dihydrotestosterone (DHT). Its pharmacological profile explains both its unique benefits in physique enhancement and its associated risks.

1. Molecular Basis and Mechanism of Action

• DHT-Derivative:
  Because it is structurally modified from dihydrotestosterone, stanozolol does not aromatize to estradiol. This eliminates the risk of estrogenic side effects such as gynecomastia, water retention, or bloating.

• 17-α-Alkylation:
  The addition of a 17-α-alkyl group allows oral bioavailability, but also makes the compound hepatotoxic. Even injectable stanozolol retains this modification, which is why liver risk exists regardless of route of administration.

• Binding to Androgen Receptor:
  Stanozolol binds to androgen receptors in skeletal muscle, stimulating protein synthesis, nitrogen retention, and promoting an anabolic environment.

• Reduction of SHBG (Sex Hormone-Binding Globulin):
  One of stanozolol’s distinct actions is its potent suppression of SHBG levels, which increases the proportion of free, bioactive testosterone and other androgens circulating in the body. This makes it a popular “synergy drug” when stacked with other anabolic steroids.

2. Anabolic vs. Androgenic Ratio

• Anabolic Rating: Approximately 320 (significantly higher than testosterone, which is 100).

• Androgenic Rating: Approximately 30–40 (lower than testosterone).

This favorable ratio explains why stanozolol is effective for lean muscle gains without strong androgenic side effects like pronounced hair loss or prostate enlargement—though these risks still exist in predisposed individuals.

3. Expected Effects in Bodybuilding Contexts

• Increased Muscle Definition: Due to its lack of aromatization, muscles appear hard, dense, and vascular rather than smooth or bloated.

• Enhanced Strength: Stanozolol often produces neural strength gains, making it useful for athletes in strength-dependent sports.

• Reduced Water Retention: Unlike aromatizing steroids, stanozolol provides a dry look, ideal for cutting cycles and contest prep.

• Joint and Tendon Dryness: The same mechanism that enhances definition can cause joint discomfort, as collagen synthesis and synovial fluid support are impaired.

• Synergistic Stacking Agent: Because it reduces SHBG, other steroids in the stack become more bioavailable, amplifying overall cycle potency.

4. Performance Enhancement vs. Medical Use

• Medical Context: Historically, stanozolol has been prescribed for hereditary angioedema and severe catabolic states.

• Athletic Context: Off-label, it is almost exclusively used for physique and strength enhancement, but its non-medical use is banned under WADA regulations and associated with strict detection windows in doping control.

5. Dose- and Duration-Dependent Risks

• Liver Toxicity: Directly related to dose and cycle length. Even short-term use (2–4 weeks) can elevate ALT/AST and bilirubin.

• Cardiovascular Impact: Severe HDL suppression and LDL elevation can occur within 1–2 weeks, creating an atherogenic profile.

• Endocrine Suppression: Despite being “dry,” stanozolol strongly suppresses endogenous testosterone via negative feedback on the hypothalamic-pituitary-testicular axis (HPTA).

🔑 Key Takeaway:
Stanozolol Stanoplex XT Labs 100 / 20 ml delivers potent anabolic benefits—hard, lean muscle gains with minimal water retention—but at the cost of marked liver, cardiovascular, and endocrine risks. Its pharmacological profile makes it best suited for short-term, cutting-focused cycles, ideally under medical supervision with proper monitoring.

Stacks & Combinations with Stanozolol Stanoplex XT Labs 100 / 20 ml

Stanozolol Stanoplex XT Labs 100 / 20 ml is a potent anabolic steroid primarily used for cutting and recomposition phases. Because of its non-aromatizing nature and ability to produce a dry, lean physique, it is rarely used alone; instead, it is stacked with other anabolic-androgenic steroids (AAS) to maximize results. Below is a detailed breakdown of common combinations, cycle durations, and dosage strategies used in bodybuilding contexts.

1. Base Testosterone + Stanozolol (Foundation Stack)

• Purpose: Maintain physiologic androgen levels while benefiting from stanozolol’s muscle-hardening effects.

• Typical Protocol:

  • Testosterone Propionate or Cypionate: 250–500 mg/week

  • Stanozolol: 50 mg every other day (EOD) to 50 mg daily (350–500 mg/week total)

• Notes: Testosterone prevents hypogonadism symptoms (low libido, fatigue, mood swings) that occur if stanozolol is run solo. This is considered a baseline stack for both intermediate and advanced athletes.

2. Cutting/Strength-Oriented Cycle

• Purpose: Fat loss, vascularity, and strength preservation during calorie deficit.

• Typical Protocol:

  • Testosterone Propionate: 250–400 mg/week

  • Stanozolol: 50–100 mg daily (350–700 mg/week)

  • Drostanolone (Masteron): 300–400 mg/week

• Notes: This “dry cycle” amplifies definition while minimizing water retention. However, it significantly worsens lipid profiles and may stress joints due to reduced synovial fluid.

3. Advanced Contest Preparation

• Purpose: Maximum hardness and definition in the final 4–6 weeks before a competition.

• Typical Protocol:

  • Stanozolol: 50–100 mg daily

  • Trenbolone Acetate: 200–400 mg/week

  • Masteron Propionate: 300–400 mg/week

• Notes: This is a high-risk, short-duration protocol. It produces an extreme “grainy” look but carries severe risks: cardiovascular strain, mood instability, and hepatotoxicity. Strict diet and cardio regimens are mandatory.

4. Lean Bulk or Recomposition Phase

• Purpose: Increase lean mass with minimal fat gain or water retention.

• Typical Protocol:

  • Testosterone Enanthate: 300–500 mg/week

  • Boldenone Undecylenate: 400–600 mg/week

  • Stanozolol: 50 mg every other day

• Notes: Boldenone helps appetite and erythropoiesis, while stanozolol ensures a drier, denser appearance. This stack is less extreme than contest prep but still demands careful lipid and liver monitoring.

5. Medical Caution with Hepatotoxic Stacks

• Do NOT combine stanozolol with other 17-α-alkylated steroids (e.g., oxymetholone, methyltestosterone, orals like Dianabol) due to compounding liver toxicity.

• Combining with very low-fat diets and stimulants (e.g., clenbuterol, ephedrine) increases cardiovascular strain and risk of arrhythmias.

• WADA strictly bans stanozolol; athletes must account for detection windows that can last weeks post-use.

🔑 Summary:

• Stanozolol Stanoplex XT Labs 100 / 20 ml is rarely run solo; it is typically combined with testosterone as a base.

• Cutting and contest-prep stacks may include trenbolone and masteron for extreme results but carry high medical risks.

• Lean bulk stacks may include boldenone or primobolan for a safer anabolic balance.

• Careful dosing (50–100 mg/day) and cycle duration limits (6–8 weeks) are key to reducing harm.

Adverse Effects & Risks of Stanozolol Stanoplex XT Labs 100 / 20 ml (In Depth)

Before any H3 details, note that stanozolol is among the AAS with pronounced dyslipidemic impact (HDL suppression; LDL elevation) and clinically significant hepatotoxicity risk due to 17-α-alkylation—even over short courses. Severe cholestatic jaundice and, rarely, liver failure have been reported. PMC+3PubMed+3PubMed+3

Hepatic (Liver)

• Cholestatic injury: Pruritus, jaundice, marked bilirubin elevation with often modest ALT/AST rise; mechanism consistent with canalicular transport impairment from 17-α-alkylated AAS. Severe cases (e.g., bilirubin >40 mg/dL) are published. Risk rises with dose and duration. WJGNet+1

• Chronic/structural lesions: Peliosis hepatis (blood-filled cavities), hepatic adenoma, and even hepatocellular carcinoma have been associated with long-term androgen exposure. NCBI

Signal to stop immediately: dark urine, pale stools, itching, right-upper-quadrant pain, or jaundice.

Cardiovascular & Metabolic

• HDL-C collapse and LDL-C rise: Human studies show marked HDL reduction (e.g., HDL2 ↓ ~85% in one cohort) within weeks; LDL often increases—shifting the atherogenic profile. These effects elevate cardiovascular risk and may reverse only after discontinuation. PubMed+1

• Blood pressure & endothelial strain: AAS can increase BP and impair endothelial function; combine with stimulants or dehydration and risk heightens (inferences consistent with sports-medicine reviews). Lippincott Journals

Endocrine & Reproductive

• HPT-axis suppression: Reduced LH/FSH → decreased endogenous testosterone, testicular atrophy, impaired spermatogenesis. Post-cycle, recovery can be variable and incomplete. (General AAS physiology.) NCBI

• Female virilization: Voice deepening (often irreversible), hirsutism, clitoromegaly, acne, menstrual disruption—documented with stanozolol. Drugs.com

Musculoskeletal

• Tendon integrity: Rapid strength gains with low water retention may raise strain on tendons/connective tissue; case and review literature in AAS users describe increased risk patterns (mechanistic concern; evidence mixed). Lippincott Journals

Dermatologic/Androgenic

• Acne, oily skin, androgenic alopecia (in genetically susceptible individuals), seborrhea. RxList

Neuropsychiatric

• Mood lability, irritability, insomnia; in predisposed persons, potential for anxiety, aggression, or dysphoria. (General AAS effects summarized in clinical reviews.)(4) NCBI

Hematologic/Thrombotic

• Polycythemia (hematocrit rise) and pro-thrombotic shifts are reported with androgens; lipid derangements exacerbate risk. (Sports-medicine overview.) Lippincott Journals

Renal/Fluid

• Peripheral edema can occur; caution in nephrosis or significant renal impairment (historic labeling). Allina Health

Monitoring Recommendations During Stanozolol Stanoplex XT Labs 100 / 20 ml Use

While the non-medical use of anabolic steroids like Stanozolol Stanoplex XT Labs 100 / 20 ml is strongly discouraged, many athletes and bodybuilders continue to experiment with these compounds. From a harm-reduction perspective, systematic monitoring is crucial to detect early complications and reduce long-term health risks. Below is a detailed overview of evidence-based monitoring practices(3) used in sports medicine and endocrinology.

1. Laboratory Testing Schedule

Baseline (pre-cycle), mid-cycle, and post-cycle bloodwork is strongly advised:

• Comprehensive Metabolic Panel (CMP): Includes liver enzymes (ALT, AST), bilirubin, and alkaline phosphatase.

  • Why? Stanozolol is hepatotoxic, even when injected. Early elevations can signal hepatic stress or impending cholestasis.

• Fasting Lipid Panel: HDL-C, LDL-C, and triglycerides.

  • Why? Stanozolol causes one of the most profound reductions in HDL and elevations in LDL of any anabolic steroid. Monitoring helps assess cardiovascular risk.

• Complete Blood Count (CBC): Hemoglobin, hematocrit, and red blood cell indices.

  • Why? Androgens stimulate erythropoiesis; unchecked elevations increase blood viscosity and thrombotic risk.

• Renal Function (eGFR, serum creatinine, BUN):

  • Why? Steroid-induced hypertension and high protein intake can strain renal function.

• Fasting Glucose and HbA1c (when possible):

  • Why? Stanozolol may induce mild insulin resistance, especially in predisposed individuals.

2. Cardiovascular Monitoring

• Blood Pressure (BP): Should be measured at least twice weekly.

  • Even modest increases in BP compound cardiovascular risk when lipid profiles are disrupted.

• Resting Heart Rate (RHR): Elevated RHR may signal autonomic imbalance or increased cardiac strain.

• Electrocardiogram (ECG) (for high-risk individuals): Screening for arrhythmias or conduction abnormalities.

3. Hepatic Health Surveillance

Users should be educated to report warning signs immediately:

• Jaundice (yellowing of eyes/skin)

• Severe fatigue out of proportion to training

• Right upper quadrant (RUQ) abdominal pain (liver region)

• Dark urine and pale stools

• Generalized pruritus (itching)

These symptoms may indicate cholestatic liver injury, which has been documented in both oral and injectable stanozolol.

4. Endocrine and Reproductive Health

• Testosterone, LH, FSH: Pre- and post-cycle testing helps quantify HPT axis suppression.

• Estradiol: While stanozolol does not aromatize, estradiol can fall excessively, impacting mood, joint health, and libido.

• Prolactin: To exclude hyperprolactinemia as a cause of sexual dysfunction.

Post-Cycle Therapy (PCT) should always be planned in advance, tailored to lab results.

5. Musculoskeletal and Joint Health

Although prized for its “drying” effect, stanozolol is associated with:

• Collagen synthesis impairment, leading to tendon fragility.

• Joint pain or “dry joints”, commonly reported during cycles.
  Clinical evaluation should focus on injury prevention and early recognition of connective tissue stress.

6. Long-Term Risk Considerations

• Atherosclerosis screening (carotid ultrasound, coronary calcium scoring) is reasonable in long-term users due to lipid abnormalities.

• Liver imaging (ultrasound, MRI) may be required if persistent enzyme abnormalities are detected.

• Fertility testing (semen analysis) may be considered in men planning future parenthood.

FAQs About Stanozolol Stanoplex XT Labs 100 / 20 ml

What is Stanozolol and how does it work?

Stanozolol is an anabolic steroid derived from dihydrotestosterone (DHT). It promotes protein synthesis, increases nitrogen retention, and reduces SHBG (sex hormone-binding globulin), which enhances the activity of other steroids used in combination. It’s valued for improving muscle definition without significant water retention.

Who manufactures Stanoplex 100 and is it pharmaceutical grade?

Stanoplex 100 is produced by XT Labs, a well-known underground lab brand. While not classified as pharmaceutical-grade by FDA standards, many users in performance-enhancement communities consider XT Labs products high-purity when sourced reliably.

Why is Stanoplex XT labs 20 ml version instead of the usual 10 ml?

The 20 ml format is designed for long-term users or athletes running moderate to high weekly dosages. It helps reduce the cost per milliliter and avoids the hassle of switching vials mid-cycle. Fewer punctures also lower the chance of bacterial contamination.

Is Stanoplex 100 used during bulking or cutting?

Primarily during cutting cycles. Its ability to enhance vascularity, preserve lean mass, and produce a hard, dry look makes it ideal for pre-contest preparation. However, some users also include it in lean bulking phases to control water retention.

How is injectable stanozolol different from the oral version?

Both deliver the same active hormone, but injectable versions bypass first-pass liver metabolism. Still, they are not free from liver toxicity. Injections may have a slightly longer half-life, and users often report less frequent dosing compared to the oral form.

What is a common dosage schedule for Stanoplex 100?

For men, typical doses range from 50 mg every other day to 100 mg daily, depending on cycle goals and tolerance. Athletes often run it for 6–8 weeks max due to its hepatic impact.

Can Stanoplex 100 be mixed with other steroids?

Yes. Popular combinations include:

• Testosterone Propionate (for androgenic support)

• Primobolan (for lean gains)

• Trenbolone Acetate (for aggressive fat loss)

Stacking enhances results, but also increases the complexity of managing side effects.

What side effects should I watch for?

Liver toxicity is a major concern. Other possible side effects include:

• Cholesterol imbalance: severe HDL suppression and LDL elevation

• Joint pain: due to lack of water retention

• Androgenic issues: acne, hair thinning, and mood swings

• Testosterone suppression: reduced natural production post-cycle

Can Stanoplex cause joint problems?

Yes. Because stanozolol dries out the joints by reducing synovial fluid and collagen synthesis, some users experience stiffness or pain, especially when lifting heavy.

Is Stanozolol safe for women?

At high concentrations like 100 mg/ml, it is not recommended for female use. Even low doses of stanozolol can cause virilization—deepened voice, clitoral enlargement, and body hair growth.

What kind of PCT is recommended after a cycle?

Post-cycle therapy often includes Clomiphene (Clomid) or Tamoxifen (Nolvadex) to help restore endogenous testosterone. Blood tests are crucial before, during, and after PCT to evaluate hormonal recovery.

How should the 20 ml vial be stored?

Store in a cool, dry place away from direct sunlight. Keep the vial tightly sealed and use sterile technique with each draw to prevent contamination over extended use.

Is it normal for the injection to hurt?

Injectable stanozolol is suspension-based, not oil-based. The water-based nature and crystal size can cause injection-site pain, swelling, or even post-injection fever in some users.

References 

(1) Valerieva A, Caballero T, Magerl M, Frade JP, Audhya PK, Craig T. Advent of oral medications for the treatment of hereditary angioedema. Clin Transl Allergy. 2024 Sep;14(9):e12391. doi: 10.1002/clt2.12391. PMID: 39331535; PMCID: PMC11431061. Advent of oral medications for the treatment of hereditary angioedema – PMC

(2) Sloane DE, Lee CW, Sheffer AL. Hereditary angioedema: Safety of long-term stanozolol therapy. J Allergy Clin Immunol. 2007 Sep;120(3):654-8. doi: 10.1016/j.jaci.2007.06.037. PMID: 17765757. Hereditary angioedema: Safety of long-term stanozolol therapy – PubMed

(3) Tavares, A. S. R., Vital, M., Cunha, M., Matos, M. M., & Tonin, F. S. (2024). Impact of anabolic steroid consumption on biochemical and hematological parameters in bodybuilders: A systematic review and evidence gap mapping. Performance Enhancement & Health, 12(2), 100280. https://doi.org/10.1016/j.peh.2024.100280

In-text citation: (Tavares et al., 2024)

(4) Chisari, M. G., Esposito, M., Alloca, S., Franco, S., Francaviglia, M., Volonnino, G., Rinaldi, R., Di Fazio, N., & Di Mauro, L. (2025). Anabolic–Androgenic Steroids and Brain Damage: A Review of Evidence and Medico-Legal Implications. Forensic Sciences, 5(3), 31. https://doi.org/10.3390/forensicsci5030031

LiverTox – Androgenic Steroids (cholestasis, peliosis, hepatic tumors). NCBI

WADA Prohibited List (2025) — S1 Anabolic Agents. Wada-Ama

Taggart HM et al. Stanozolol & HDL subfractions (marked HDL2 decline). PubMed

Bausserman LL et al. Short-term stanozolol dyslipidemia (rapid HDL changes). PubMed

Petrovic A et al. AAS-induced liver injury (review). WJGNet

Stępień PM et al. Severe cholestasis after injectable stanozolol (case).