When it comes to enhancing performance and sculpting the ideal physique, bodybuilders and athletes often find themselves at a crossroads between Winstrol and Andriol. Both of these potent compounds promise impressive results, but their effects and applications can vary significantly. Winstrol, renowned for its cutting properties and ability to promote lean muscle gains, has garnered a loyal following. On the other hand, Andriol offers a more subtle approach, focusing on hormone balance and muscle growth while minimizing side effects.

In this ultimate showdown, we’ll dive deep into the strengths and weaknesses of Winstrol and Andriol, helping you make an informed decision tailored to your fitness goals. 

Whether you’re looking to shred fat or boost overall performance, understanding the nuances of these two popular steroids is essential. Join us as we unravel the hype and provide clarity on which compound reigns supreme in the world of bodybuilding and athletics.

Winstrol vs Andriol: A Comparison of Two Popular Anabolic Steroids

What Is Winstrol?

Winstrol, or Stanozolol, is a synthetic anabolic steroid derived from dihydrotestosterone (DHT). First developed in the 1960s, it gained medical approval for treating conditions such as hereditary angioedema, but its fame today primarily stems from its muscle-hardening, fat-reducing effects in the bodybuilding community.

Unlike many anabolic steroids, Winstrol does not cause significant water retention, making it ideal for athletes and bodybuilders looking to achieve a dry, lean, and defined physique. It’s often favored during cutting cycles to help preserve lean muscle mass while reducing body fat.

Another defining feature of Winstrol is its relatively low androgenic index, meaning users are less likely to experience androgenic side effects like hair loss, acne, or virilization (in women). Winstrol is available in both oral and injectable forms, adding to its flexibility of use.

Winstrol is also widely appreciated for its performance-enhancing effects, particularly in increasing strength, speed, and endurance—making it a favorite among sprinters, fighters, and strength athletes.

“Winstrol is prized for producing a hard, dry look in physique athletes and is often used during contest prep or cutting cycles.”
— William Llewellyn, Anabolics

However, Winstrol comes with risks, especially concerning liver toxicity, lipid imbalance, and joint discomfort due to its dry nature. These side effects must be considered in any cycle plan.

What Is Andriol?

Andriol is the brand name for testosterone undecanoate, a unique oral form of testosterone. Unlike most oral steroids, which are methylated and strain the liver, Andriol is absorbed via the lymphatic system, bypassing first-pass liver metabolism and significantly reducing hepatotoxicity.

Developed in the 1980s, Andriol is primarily used in testosterone replacement therapy (TRT) to treat male hypogonadism. However, it has also become a mild performance enhancer for bodybuilders and athletes who seek a safer oral steroid.

Andriol is versatile—it can be used in both bulking and cutting phases depending on diet and dosing. It helps:

Increase muscle protein synthesis

Improve red blood cell production

Maintain a stable testosterone environment

Its mild estrogenic and androgenic profile means it produces fewer side effects compared to more potent steroids.

“Testosterone undecanoate has a longer half-life and more stable hormone profile than traditional oral testosterone, offering a gentler hormonal effect.”
— Dr. Richard Auchus, The Journal of Clinical Endocrinology & Metabolism

That said, Andriol is less potent than injectable testosterone esters and often requires higher, more frequent dosing to see substantial anabolic results.

Mechanism of Action: How Winstrol and Andriol Work

Winstrol

Winstrol exerts its effects by binding to androgen receptors in skeletal muscle tissue, enhancing:

Protein synthesis – leading to lean muscle gain

Nitrogen retention – crucial for muscle recovery

Red blood cell production – improving oxygen transport and endurance

Reduction in SHBG (sex hormone-binding globulin) – increasing free testosterone levels

This makes Winstrol highly effective during cutting cycles or when a dry, vascular look is desired.

“Winstrol’s suppression of SHBG allows more free testosterone to circulate, further enhancing its anabolic activity.”
— George Touliatos, MD, Anabolic Steroids in Sports and Exercise

Andriol

Andriol, as a prodrug of testosterone, works by delivering testosterone undecanoate into the lymphatic system, where it is gradually converted into active testosterone in the bloodstream. This supports:

Muscle hypertrophy through testosterone’s binding to muscle androgen receptors

Fat metabolism, particularly visceral fat reduction

Hormone stability over time due to slower conversion and longer half-life

It replicates the physiological functions of testosterone, supporting anabolic effects without overwhelming hormonal spikes.

“Testosterone undecanoate offers stable hormone levels without the liver toxicity associated with traditional oral steroids.”
— Dr. Shalender Bhasin, New England Journal of Medicine

Key Differences Between Winstrol and Andriol

Feature
Winstrol
Andriol

Chemical Name
Stanozolol
Testosterone Undecanoate

Delivery Method
Oral or injectable
Oral (via lymphatic system)

Primary Use
Cutting, strength, performance
TRT, mild bulking or cutting

Water Retention
None
Minimal

Hepatotoxicity
Moderate to High (oral form)
Very Low

Androgenic Activity
Low to moderate
Moderate

Estrogenic Side Effects
None
Possible at high doses

 

Benefits of Winstrol vs Andriol for Bodybuilders and Athletes

Benefits of Winstrol for Bodybuilders and Athletes

Winstrol (Stanozolol) is widely valued in the bodybuilding and athletic community for its ability to produce lean, dry muscle gains without water retention. This makes it an ideal choice during cutting cycles, when the goal is to retain muscle mass while reducing body fat. Unlike many other anabolic steroids that cause bloating, Winstrol delivers a chiseled, vascular look that’s highly prized on stage and in photo-ready conditions.

“Winstrol provides hard, defined muscles, particularly useful during contest prep or for athletes wanting a shredded look.”
— William Llewellyn, Anabolics

In addition to its cosmetic benefits, Winstrol is notable for improving strength and endurance. It increases red blood cell production, which enhances oxygen transport to muscles, enabling athletes to perform at a higher intensity for longer durations. This is especially beneficial for:

Sprinters

MMA fighters

Weightlifters

CrossFit athletes

Winstrol allows these athletes to push harder in training and recover more efficiently between efforts.

Another standout advantage is its low androgenic rating, making it more accessible to female athletes. Many anabolic steroids carry a risk of virilization (development of male characteristics in women), but Winstrol’s milder androgenic profile reduces this risk substantially. It has become a staple for female physique competitors who want to enhance muscle tone without masculinizing side effects.

“Stanozolol is often considered one of the more female-friendly steroids due to its favorable risk-benefit profile.”
— Dr. George Touliatos, Muscle Insider

Benefits of Andriol for Bodybuilders and Athletes

Andriol (Testosterone Undecanoate) offers a unique set of benefits, particularly for those prioritizing long-term hormone support and safety. One of its most important features is that it is non-hepatotoxic. Unlike most oral steroids, which are liver-toxic due to 17-alpha alkylation, Andriol is absorbed via the lymphatic system, bypassing the liver entirely.

“Because testosterone undecanoate is absorbed through the lymphatic system, it avoids first-pass metabolism in the liver, reducing the risk of hepatotoxicity.”
— Dr. Shalender Bhasin, New England Journal of Medicine

This makes Andriol a safer long-term option, particularly for users who are concerned about liver enzyme elevation or liver stress.

Another core benefit of Andriol is its ability to stabilize testosterone levels. For bodybuilders and athletes, testosterone plays a pivotal role in:

Muscle protein synthesis

Strength and performance

Recovery and mood regulation

Andriol supports muscle hypertrophy, improved strength, and sustained energy levels. Unlike Winstrol, which is best suited for cutting, Andriol is versatile—effective in both bulking and cutting cycles depending on dosage and nutrition.

Its lower incidence of estrogenic and androgenic side effects also makes Andriol a reliable choice for those who are sensitive to issues like gynecomastia or hair loss.

Finally, Andriol’s oral dosing offers convenience and discretion. Many users prefer it over injectable testosterone esters for this reason alone, especially if they’re new to hormone therapy or simply prefer not to use needles.

“Oral testosterone undecanoate offers a practical alternative for men who are not willing to undergo intramuscular injections.”
— Dr. Richard Auchus, The Journal of Clinical Endocrinology & Metabolism

Summary Comparison: Winstrol vs Andriol Benefits

Feature
Winstrol (Stanozolol)
Andriol (Testosterone Undecanoate)

Primary Use
Cutting, muscle definition
Hormone support, bulking & cutting

Water Retention
None
Low

Muscle Hardness
High
Moderate

Strength & Power Gains
High
Moderate to high

Endurance Boost
Yes (via RBC increase)
Yes (via testosterone support)

Hepatotoxicity
Moderate (oral)
Very low (lymphatic absorption)

Female-Friendly
Yes (low androgenic effects)
Rarely used by females

Form
Oral or injectable
Oral only

Best For
Lean gains, cutting, dry look
Hormone balance, long-term performance

 

Side Effects and Risks of Winstrol vs Andriol

Side Effects and Risks of Winstrol

While Winstrol (Stanozolol) is favored for its performance-enhancing benefits, it also presents significant health risks, particularly with long-term or high-dose use.

1. Cholesterol Imbalance and Cardiovascular Risk

One of the most concerning side effects of Winstrol is its negative impact on lipid profiles. It decreases HDL (good cholesterol) and increases LDL (bad cholesterol), which can elevate the risk of:

Atherosclerosis

Heart attack

Stroke

This risk is exacerbated with prolonged use or when combined with other oral anabolic steroids.

“C17-alkylated steroids like stanozolol can cause severe dyslipidemia, significantly increasing cardiovascular risk.”
— Sader et al., Journal of Clinical Endocrinology & Metabolism

2. Liver Toxicity

Winstrol is a C17-alpha-alkylated steroid, meaning it’s chemically altered to survive digestion but is hepatotoxic. Potential liver-related conditions include:

Elevated liver enzymes

Hepatic tumors

Peliosis hepatis – blood-filled cysts in the liver

Liver function should be monitored regularly during Winstrol use, especially for oral formulations.

“Peliosis hepatis has been reported with the use of 17α-alkylated anabolic steroids and can result in fatal intra-abdominal hemorrhage.”
— Bagheri et al., Hepatology

3. Joint Pain and Dryness

Winstrol users often report joint discomfort, particularly during cutting phases. This is believed to stem from:

Reduced synovial fluid

Loss of water retention

Overly dry joints under stress

4. Androgenic and Hormonal Side Effects

Acne

Hair loss (especially in genetically predisposed individuals)

Virilization in women (deepening of the voice, body hair growth, clitoral enlargement)

Winstrol also significantly suppresses natural testosterone. This can lead to:

Hypogonadism

Erectile dysfunction

Mood swings

A well-structured post-cycle therapy (PCT) is essential after Winstrol use to restore natural testosterone production.

“Testosterone suppression is significant even with non-aromatizing steroids, necessitating aggressive PCT protocols.”
— Llewellyn, Anabolics

Side Effects and Risks of Andriol

While Andriol (Testosterone Undecanoate) is often considered a safer oral alternative, particularly due to its lymphatic absorption and non-hepatotoxic nature, it is not without side effects.

1. Testosterone Suppression and Hormonal Imbalance

Extended Andriol use can lead to suppression of natural testosterone production, resulting in:

Low libido

Fatigue

Mood changes

Muscle mass loss

This suppression may persist after cessation, making PCT necessary to normalize hormone levels.

“Despite its mild nature, oral testosterone can suppress endogenous testosterone and should be followed by post-cycle therapy.”
— Morales et al., Fertility and Sterility

2. Androgenic Effects

Although milder than many injectables, Andriol can still cause:

Acne

Oily skin

Hair loss

Virilization in women at high doses

3. Estrogenic Side Effects

Since Andriol aromatizes into estrogen, it may lead to:

Gynecomastia (male breast tissue development)

Water retention

Emotional instability

While estrogenic effects are less pronounced than with traditional testosterone esters, individuals sensitive to aromatization should monitor carefully.

4. Cardiovascular Effects

Andriol is gentler on the lipid profile than C17-alpha-alkylated steroids like Winstrol, but it can still negatively affect cholesterol in some users.

“Even non-alkylated androgens like testosterone undecanoate can decrease HDL and increase cardiovascular risk markers.”
— Zitzmann et al., Endocrine Reviews

Summary: Risk Profile Comparison

Risk Factor
Winstrol
Andriol

Liver Toxicity
High (oral form)
None (bypasses liver)

Testosterone Suppression
High
Moderate

Estrogenic Side Effects
None (non-aromatizing)
Possible (aromatizes to estrogen)

Cardiovascular Risk
High (HDL↓, LDL↑)
Moderate (less impact on cholesterol)

Androgenic Side Effects
Moderate to high
Mild to moderate

Female Suitability
Cautious use (lower virilization risk)
Not recommended (higher virilization risk)

 

Post-Cycle Therapy (PCT) for Winstrol and Andriol

Why PCT Matters

Both Winstrol and Andriol suppress the body’s natural testosterone production to varying degrees. After completing a steroid cycle, your hypothalamic-pituitary-gonadal (HPG) axis is downregulated, leading to:

Low testosterone

Mood swings

Fatigue and depression

Loss of muscle mass

Decreased libido

Estrogen dominance (if aromatization occurred)

Post-cycle therapy (PCT) is essential to restore natural testosterone production, maintain gains, and prevent post-cycle crashes.

“The primary goal of PCT is to restart the hypothalamic-pituitary-testicular axis and allow for recovery of natural testosterone production.”
— Dr. Shalender Bhasin, New England Journal of Medicine

PCT Protocol for Winstrol

Why PCT Is Critical After Winstrol

Although Winstrol does not aromatize to estrogen, it strongly suppresses endogenous testosterone, especially when used for 6–8 weeks or longer.

Recommended PCT Protocol (Winstrol Cycle)

Start PCT: 1–2 days after your last Winstrol dose (if oral); 3–5 days for injectable

Compound
Dose
Duration

Clomid (Clomiphene Citrate)
50 mg/day
4 weeks

Nolvadex (Tamoxifen Citrate)
20 mg/day
4 weeks

DHEA (Swolverine)
100 mg/day
4 weeks

ZMT (Swolverine Sleep + Test Booster)
6 capsules nightly
4 weeks

Optional Additions

Ashwagandha (for cortisol control)

Tongkat Ali or Fadogia agrestis (natural test support)

Liver support (especially if Winstrol was used orally): Milk thistle, TUDCA, or NAC

PCT Protocol for Andriol

Why PCT May Be Needed After Andriol

Andriol is a testosterone prodrug and does aromatize. While milder, prolonged use or high doses can still suppress endogenous testosterone and lead to estrogenic side effects post-cycle.

Recommended PCT Protocol (Andriol Cycle)

Start PCT: 3–5 days after last dose

Compound
Dose
Duration

Nolvadex
20–40 mg/day (taper to 20 mg)
4 weeks

Clomid
25–50 mg/day (optional)
4 weeks

DHEA (Swolverine)
100 mg/day
4 weeks

ZMT (Swolverine)
6 capsules nightly
4 weeks

If estrogen rebound is a concern (e.g., gynecomastia symptoms), you may also consider low-dose Aromasin (Exemestane) during the first 2 weeks:

Aromasin: 12.5 mg every other day (EOD) as needed for estrogen control

“Tamoxifen and Clomiphene remain the gold standards for post-cycle testosterone recovery, but natural boosters and micronutrients can enhance outcomes.”
— Peter Bond, Anabolic Steroids: Ultimate Research Guide

Monitoring and Bloodwork

To ensure your PCT is working effectively, consider blood tests at:

Start of PCT

2 weeks in

4–6 weeks post-PCT

Recommended blood markers:

Total testosterone

Free testosterone

Estradiol (E2, sensitive assay)

LH and FSH

Lipid panel

Liver enzymes (AST, ALT)

Summary: Tailored PCT Plans

Compound Used
Start PCT
Key PCT Agents
Duration

Winstrol (oral/injectable)
1–5 days post-cycle
Nolvadex, Clomid, DHEA, ZMT
4 weeks

Andriol
3–5 days post-cycle
Nolvadex ± Clomid, DHEA, ZMT
4 weeks

 

Comparing Winstrol vs Andriol: Which Is Better for You?

Choosing the Right Compound Based on Your Goals

When evaluating Winstrol vs Andriol, your decision should be grounded in your:

Body composition goals (cutting vs. bulking)

Health history

Risk tolerance

Experience with anabolic steroids

Winstrol: Ideal for Cutting and Performance

Winstrol (Stanozolol) is best suited for athletes and bodybuilders focused on:

Cutting fat while preserving lean muscle

Improving vascularity and muscle definition

Boosting strength and endurance during performance training

However, Winstrol’s benefits come with notable risks:

Liver toxicity (especially in oral form)

Adverse lipid changes (HDL ↓, LDL ↑)

Joint pain and testosterone suppression

“Stanozolol can significantly reduce HDL cholesterol, increasing the atherogenic index and cardiovascular risk.”
— Sader et al., J Clin Endocrinol Metab

Monitoring, liver support supplements, and strict cycle duration limits are essential to mitigate these risks.

Andriol: A Safer, Balanced Hormone Support Option

Andriol (Testosterone Undecanoate) offers:

A safer oral alternative with lymphatic absorption (non-hepatotoxic)

Versatility in both bulking and cutting cycles

Stable testosterone support with lower risk of severe androgenic effects

Its mild nature makes it appealing for users who prefer a long-term, less aggressive approach to muscle growth and performance.

However, it is not without drawbacks:

Testosterone suppression with prolonged use

Estrogenic side effects (e.g., gynecomastia, water retention)

Moderate lipid profile impact at high doses

“Testosterone undecanoate avoids liver toxicity but still requires hormonal monitoring and may suppress endogenous testosterone.”
— Zitzmann, Endocrine Reviews

Legal Status of Winstrol and Andriol

Winstrol (Stanozolol): Controlled Substance in Many Countries

Winstrol, or Stanozolol, is classified as a Schedule III controlled substance in the United States under the Anabolic Steroid Control Act of 1990. Possession or use without a valid prescription is illegal and can result in:

Fines

Criminal charges

Suspension from sports or professional leagues

“Anabolic steroids such as Winstrol are classified as controlled substances due to their potential for abuse and adverse health effects.”
— U.S. Drug Enforcement Administration (DEA)

In Canada, Winstrol is listed under Schedule IV of the Controlled Drugs and Substances Act, making it illegal to possess without a prescription but not an arrestable offense for possession alone.

In the UK, it is a Class C drug, and possession without a prescription is illegal.

In many European Union countries, Winstrol is only available by prescription for medical use, typically for conditions like hereditary angioedema.

In Australia, it is classified as a Schedule 4 (Prescription Only Medicine) under the Poisons Standard. Importing or distributing Winstrol without proper authorization can result in legal action.

In WADA-regulated sports, Winstrol is explicitly banned at all times:

“Stanozolol is listed as a prohibited substance under the S1 class of anabolic agents.”
— World Anti-Doping Agency (WADA)

Summary: Winstrol Legal Status

Country/Region
Status

United States
Schedule III Controlled

Canada
Schedule IV (Rx only)

UK
Class C Drug

Australia
Prescription Only (S4)

WADA Sports
Banned Substance

Andriol (Testosterone Undecanoate): Prescribable But Regulated

Andriol is a prescription medication used primarily for testosterone replacement therapy (TRT) in men with hypogonadism. Its active compound, testosterone undecanoate, is a controlled substance in many jurisdictions due to its anabolic potential.

In the United States, Andriol is classified under Schedule III as a testosterone ester. Legal use requires a valid prescription.

“Testosterone and its esters are listed as controlled substances under the Anabolic Steroid Control Act due to their performance-enhancing potential.”
— U.S. Department of Justice

In Canada, it is a Schedule IV substance—legal with a prescription.

In the UK, testosterone undecanoate is a Class C drug and legal with a prescription.

In Australia, it is a Schedule 4 medication, legal by prescription only.

Notable Differences from Winstrol:

Andriol is commonly prescribed for legitimate medical reasons, making it more accessible via legal channels.

It is often less scrutinized by customs if accompanied by proper documentation for personal use.

It is still banned in professional sports under WADA’s regulations.

“Testosterone is prohibited in sport unless a therapeutic use exemption (TUE) is granted.”
— WADA Prohibited List

Summary: Andriol Legal Status

Country/Region
Status

United States
Schedule III Controlled

Canada
Schedule IV (Rx only)

UK
Class C Drug

Australia
Prescription Only (S4)

WADA Sports
Banned Substance

Legal Risks of Buying Online

Purchasing either Winstrol or Andriol from unauthorized websites or underground labs can pose several risks:

Legal charges for importation or possession

Contaminated or counterfeit products

No recourse if products cause harm

No medical oversight

Always consult a licensed medical provider and avoid black-market sources.

Conclusion: Making an Informed Choice

There is no universal best choice between Winstrol and Andriol—only the best choice for your specific goals and physiology.

Factor
Winstrol
Andriol

Best For
Cutting, strength, endurance
Mild bulking/cutting, TRT support

Liver Safety
Hepatotoxic (oral)
Non-hepatotoxic (lymphatic uptake)

Water Retention
None
Possible (via aromatization)

Aromatization
No
Yes

Testosterone Suppression
High
Moderate

Female Suitability
Yes (with caution)
Not recommended

Final Thoughts

If your goal is rapid fat loss and muscle definition, and you’re prepared to manage potential risks with diligent monitoring, Winstrol may deliver the sharper, performance-driven results you seek.

If you’re looking for a safer, more sustainable anabolic environment that supports lean gains, hormone balance, and long-term use, Andriol may be the more suitable option—especially for beginners or those with health considerations.

“The best steroid is the one that aligns with your goals, health profile, and ability to manage risks—there are no shortcuts, only smart choices.”
— George Touliatos, MD, Muscle Insider

Always consult a medical professional or experienced coach before starting any anabolic cycle. Additionally, post-cycle therapy (PCT) is non-negotiable for both compounds to help restore hormonal function and safeguard long-term health.