View Report
March 23, 2026
Measured Result 276.21 mg/mL 110.48% of label claim
British Dragon
British Dragon
Latest Laboratory Result 276.21 mg/mL March 23, 2026 · 110.48% of label claim View
Testabol Depot 250 mg
Product Information Compound Details
Active Substance Testosterone Cypionate Long-acting testosterone ester
250 mg/mLStrength 250 mg/mL
Package 10 mL Vial 2,500 mg total labeled content
Form Oil-Based Injectable
Estimated Half-Life Approximately 8 Days
Drug Class Androgen & Anabolic Steroid
Manufacturer British Dragon
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Product Overview
Testabol Depot 250 mg by British Dragon
Testabol Depot 250 mg is an oil-based testosterone cypionate injectable manufactured by British Dragon and dosed at 250 mg/mL in a 10 mL vial.
Testosterone Cypionate Injectable
Testabol Depot 250 mg is an injectable anabolic-androgenic steroid containing testosterone cypionate, a long-acting testosterone ester. Testosterone cypionate is one of the most established forms of injectable testosterone, with a half-life of approximately eight days when injected intramuscularlyh. Its extended release profile makes it suitable for both medically supervised testosterone replacement therapy and non-medical bodybuilding use.
In clinical practice, testosterone cypionate is indicated for replacement therapy in men with conditions associated with symptoms of deficiency or absence of endogenous testosterone, including primary hypogonadism and hypogonadotropic hypogonadism. The Endocrine Society emphasizes that diagnosis requires both compatible symptoms and consistently low testosterone concentrations measured accurately, rather than symptoms alone. In bodybuilding and performance-enhancement settings, long-acting testosterone is commonly used as a foundation compound in mass-building or bulking cycles because of its anabolic and androgenic activity and comparatively prolonged release.
Testosterone supports processes involved in muscle protein synthesis, recovery, strength, sexual function and maintenance of normal male physiological characteristics. When testosterone is used at supraphysiologic levels for physique or performance enhancement, however, the potential for adverse effects increases and such use falls outside approved medical indications. The FDA explicitly states that testosterone cypionate has not been shown to be safe and effective for the enhancement of athletic performance.
Key Benefits of Testabol Depot 250 mg
- Long-acting cypionate ester with approximately 8-day half-life
- Supports lean muscle mass, recovery, and strength
- Gradual release for stable blood levels between injections
- Commonly used as a base compound for TRT or bulking cycles
- MCT oil carrier for smooth, consistent formulation
Carrier Oil
MCT Oil Formulation
Testabol Depot 250 mg uses MCT oil as its carrier oil, providing the oil base for the testosterone cypionate formulation.
Product Profile
Testosterone Cypionate Profile
Testosterone cypionate is a long-acting testosterone ester designed for gradual release after administration. Its extended release characteristics distinguish it from faster-acting testosterone preparations and make it one of the most established injectable forms of testosterone.
Long-Acting Testosterone Ester
The cypionate ester slows the release of testosterone from the injection site, producing a longer duration of activity than short-acting preparations such as testosterone propionate or unesterified testosterone suspension. The half-life of testosterone cypionate when injected intramuscularly is approximately eight days.
Once the esterified compound is released and metabolized, the active hormone is testosterone. In many tissues, the activity of testosterone appears to depend on reduction to dihydrotestosterone, which binds to cytosol receptor proteins and initiates transcription events related to androgen action. The ester primarily influences the rate of release and duration of activity rather than changing the underlying anabolic and androgenic properties of testosterone itself.
These characteristics explain why testosterone cypionate is encountered both in medically supervised testosterone replacement therapy and in non-medical bodybuilding settings where a longer-acting testosterone preparation is commonly preferred.
Release Profile
Gradual, Extended Testosterone Release
Testosterone cypionate releases more gradually than short-acting esters such as testosterone propionate. Its release characteristics are broadly comparable to testosterone enanthate, while testosterone suspension contains no ester and represents a much faster-acting preparation. Testosterone cypionate should not be used interchangeably with testosterone propionate because of differences in duration of action.
Testabol Depot 250 mg vs Other British Dragon Preparations
British Dragon offers several testosterone formulations built around different esters, concentrations and release profiles. The main practical distinction between these preparations is how quickly testosterone is released and how long the formulation remains active after administration.
Cypionate and enanthate are both long-acting testosterone esters with broadly similar release characteristics. The Testabol Enanthate provides a closely related long-acting alternative, while Testabol Propionate uses a shorter-acting ester. British Dragon also offers Sustabol 350, a multi-ester testosterone formulation combining several release profiles.
Laboratory Testing
Testabol Depot 250 mg Lab Reports
Published laboratory reports for Testabol Depot 250 mg are shown below with the test date, measured concentration and percentage of the product's 250 mg/mL label claim.
View Report
Laboratory results apply to the specific tested sample represented in each published report and should not be interpreted as a measurement of every vial or production batch.
Dosage & Usage
Testabol Depot 250 mg Dosage & Usage
The information below is provided for educational reference only. Testosterone cypionate is a prescription androgen; medical use requires appropriate diagnosis, clinical supervision and ongoing monitoring. Non-medical use falls outside approved indications.
Typical Dosage Ranges
In medically supervised testosterone replacement therapy, dosing is individualized based on laboratory results, symptom response and the specific product used. The Endocrine Society notes that testosterone therapy should aim to achieve levels in the mid-normal range and that treatment decisions should be based on the intensity of symptoms and clinical context. In non-medical bodybuilding settings, long-acting testosterone such as Testabol Depot 250 mg is commonly referenced in the range of 250–500 mg per week, though such use falls outside approved medical indications. A typical first cycle is commonly referenced as 10–12 weeks.
| Use Case | Common Reference Range | Injection Frequency |
|---|---|---|
| TRT (medical) | Individualized by clinician | Once weekly or split |
| Bodybuilding (non-medical, beginner) | 250–400 mg / week | Once or twice weekly |
| Bodybuilding (non-medical, experienced) | 400–500 mg / week | Twice weekly or split |
Stacking & Cycle Considerations
In non-medical bodybuilding contexts, long-acting testosterone is frequently used as a base compound in bulking or mass-building cycles and may be combined with other injectable or oral compounds. British Dragon offers several products that are commonly referenced in this context, including Decabol 250 and Methanabol for bulking, or Stanabol 10 during cutting phases where maintaining muscle while reducing fat is a goal.
As with any long-acting testosterone, cycle structure, duration and support compounds should be considered in the context of individual experience, health status and bloodwork where possible.
Managing Estrogenic Side Effects
Testosterone cypionate aromatizes, meaning some of it converts to estrogen. This can contribute to water retention, gynecomastia and elevated blood pressure in susceptible individuals. Aromatase inhibitors such as Anastrozole are commonly referenced in this context, though use should be based on individual response and bloodwork where possible.
Testosterone cypionate is not liver toxic in the way oral C17-alpha-alkylated steroids are, but cholesterol and hematocrit levels should be monitored during use. Hemoglobin and hematocrit levels should be checked periodically in patients receiving long-term androgen administration.
Post-Cycle Therapy (PCT)
After completing a cycle with Testabol Depot 250 mg, post-cycle therapy is commonly recommended to help restore endogenous testosterone production and support hormonal recovery. Agents such as Clomiphene and Tamoxifen are commonly referenced for this purpose.
PCT protocols vary based on cycle length, compounds used and individual factors. Bloodwork and, where possible, medical guidance can help inform recovery strategy. The Endocrine Society notes that when men receive testosterone replacement therapy for two or more years, it can lead to delays in the body's ability to recover normal levels of sperm and hormone production.
Important
Individual Response Varies
Dosing strategies, support compounds and recovery protocols should be adjusted based on experience level and bloodwork where possible. The information above is for educational reference and does not constitute medical advice.
Safety & Information
Testosterone Cypionate Safety Information
Testosterone cypionate is a prescription androgen that can affect hormonal, reproductive, cardiovascular and hematologic function. Medical testosterone therapy requires appropriate diagnosis, clinical supervision and ongoing monitoring.
Important Safety Information
Testosterone replacement therapy is intended for appropriately diagnosed testosterone deficiency. The Endocrine Society emphasizes that diagnosis requires both compatible symptoms and consistently low testosterone concentrations measured accurately, rather than symptoms alone.
Use of testosterone at supraphysiologic levels for bodybuilding or performance enhancement falls outside approved replacement therapy and can increase exposure to androgen-related adverse effects. The FDA explicitly states that this drug has not been shown to be safe and effective for the enhancement of athletic performance.
Important
Non-Medical Testosterone Use
Higher-than-physiologic testosterone exposure can carry additional health risks. Product concentration and laboratory verification do not establish that non-medical use is safe or appropriate for an individual.
Potential Adverse Effects
Testosterone therapy can increase red blood cell production and hematocrit. Excessive elevation can require medical evaluation and changes to treatment. Hemoglobin and hematocrit levels should be checked periodically in patients receiving long-term androgen administration.
Testosterone can suppress the body's own reproductive hormone signaling and reduce sperm production. Oligospermia may occur after prolonged administration or excessive dosage. Fertility is therefore an important consideration, particularly for men planning to have children. The Endocrine Society notes that when men receive testosterone replacement therapy and hCG therapy for two or more years, it can lead to delays in the body's ability to recover normal levels of sperm and hormone production.
Other potential androgen-related effects can include acne, changes in skin oil production, fluid retention and changes in prostate-related symptoms. The following adverse reactions in the male have occurred with some androgens: gynecomastia and excessive frequency and duration of penile erections, hirsutism, male pattern of baldness, seborrhea, and acne.
Conditions Requiring Medical Evaluation
Testosterone therapy is not appropriate for everyone. The FDA label states that testosterone cypionate is contraindicated in men with breast cancer or known or suspected prostate cancer, and in women who are pregnant.
Existing cardiovascular disease, urinary or prostate symptoms, abnormal blood counts and other medical conditions should be discussed with a qualified healthcare professional before testosterone therapy is considered. The Endocrine Society notes that testosterone therapy is not recommended among men who wish to remain fertile in the near term or who have breast or prostate cancer, urinary tract infections, or heart disease.
Monitoring During Testosterone Therapy
Medically supervised testosterone therapy typically involves follow-up assessment to evaluate treatment response, adverse effects and relevant laboratory markers. Depending on the individual, monitoring may include testosterone concentrations, hematocrit and prostate-related evaluation.
The Endocrine Society recommends screening and monitoring if testosterone therapy is initiated, noting that long-term safety including prostate cancer risk remains incompletely established.
Product Care
Storage & Handling
Keep the vial securely stored and protected from conditions that could compromise the product or container. Inspect the vial and solution before use and do not use a product that appears damaged, contaminated or otherwise abnormal.
Keep all medications and injectable products out of the reach of children. Follow the storage instructions provided with the product packaging.
Further Safety Information
Shipping & Authenticity
Shipping & Product Authenticity
Testabol Depot 250 mg is supplied through the official British Dragon distribution chain and shipped in original manufacturer packaging with discreet, privacy-focused handling.
USA Domestic 3–5 business days
International 10–15 business days
Order Processing 24–48 business hours
Tracking Provided after dispatch
Direct Supply
Discreet Delivery & Original Packaging
The outer shipping package remains discreet, with privacy-focused handling and no unnecessary external product details. Products are supplied through the official British Dragon distribution chain.
What to Expect
- Orders are processed after payment confirmation
- USA Domestic shipping is typically faster when local stock is selected
- International orders include tracking, though update frequency may vary by destination
- Multiple warehouses may result in separate shipments when applicable
Authenticity Verification
To verify your Testabol Depot 250 mg product, use the security features on the vial label and cross-check them with official British Dragon presentation. Genuine British Dragon vials typically feature specific label characteristics and packaging details that distinguish them from counterfeits.
For complete delivery details, tracking policy, and reshipment terms, please see our Shipping Info page.
Storage
Testabol Depot 250 mg Storage
Proper storage conditions help preserve formulation stability and overall product integrity throughout shelf life.
Recommended Conditions
Store at controlled room temperature (15–25°C) and protect from excessive heat, moisture, and direct light. Maintaining stable conditions helps preserve the integrity of the oily formulation.
Keep the vial in its original packaging until use. Do not freeze. Before administration, inspect the solution and avoid use if it appears cloudy, discolored, contains particulate matter, or if the vial or seal is compromised.
Keep out of reach of children. Follow proper handling and sterile injection practices when administering the product.
Quick Reference
Do & Don't
- Do store at 15–25°C
- Do keep in original packaging
- Do inspect before each use
- Don't freeze the vial
- Don't expose to direct sunlight
- Don't use if solution looks abnormal
Frequently Asked Questions
Testabol Depot 250 mg FAQ
Answers to common questions about Testabol Depot 250 mg, testosterone cypionate, release characteristics, product strength and laboratory testing.
What is Testabol Depot 250 mg used for?
Testabol Depot 250 mg contains testosterone cypionate, a long-acting testosterone ester. In medical practice it is used for replacement therapy in men with conditions associated with symptoms of deficiency or absence of endogenous testosterone. In non-medical bodybuilding settings it is commonly referenced as a base compound for muscle growth, strength and recovery, though such use falls outside approved medical indications.
How often should Testabol Depot 250 mg be injected?
Because of its long-acting cypionate ester, testosterone cypionate is typically referenced as being administered once or twice weekly. In medically supervised therapy, injection frequency is individualized by a clinician based on laboratory results and treatment response. A typical first cycle in bodybuilding contexts is commonly referenced as 10–12 weeks.
Does Testabol Depot 250 mg require PCT?
In non-medical bodybuilding contexts, post-cycle therapy is commonly recommended after a testosterone cypionate cycle to help restore endogenous testosterone production and support hormonal recovery. Agents such as Clomiphene and Tamoxifen are commonly referenced for this purpose.
What does testosterone cypionate do?
Testosterone cypionate is a long-acting ester of testosterone. After administration, the esterified testosterone is released gradually and ultimately provides active testosterone, which has both androgenic and anabolic effects. In many tissues, testosterone activity appears to depend on reduction to dihydrotestosterone, which binds to receptor proteins and initiates cellular changes related to androgen action.
How long does testosterone cypionate take to work?
Testosterone cypionate has a half-life of approximately eight days when injected intramuscularly. Visible effects on physique and performance are typically referenced as taking several weeks to become apparent, depending on dose, diet, training, and individual factors. A typical cycle is commonly referenced as 10–12 weeks, with noticeable changes often reported in the middle of the cycle.
Is cypionate the best testosterone?
There is no single testosterone ester that is universally best. Testosterone cypionate and testosterone enanthate are both long-acting preparations with broadly similar release characteristics, while propionate is shorter acting and testosterone suspension contains no ester. The differences mainly involve ester structure, release profile, concentration and formulation.
What is the difference between testosterone cypionate and enanthate?
Testosterone cypionate and testosterone enanthate are closely related long-acting testosterone esters. Both are designed to slow the release of testosterone after administration and have broadly comparable characteristics. British Dragon offers Testabol Enanthate as a comparable enanthate-based formulation.
What is the difference between testosterone cypionate and propionate?
The principal difference is the ester and resulting release profile. Testosterone cypionate is a longer-acting ester, whereas testosterone propionate is released more rapidly and has a shorter duration of activity. Testosterone cypionate should not be used interchangeably with testosterone propionate because of differences in duration of action. British Dragon's shorter-acting alternative is Testabol Propionate.
Is 200 mg of testosterone cypionate a lot?
A milligram amount cannot be classified as appropriate or excessive without considering the medical indication, individual response, laboratory results, treatment schedule and the specific testosterone product being used. Testosterone treatment should therefore be individualized by a qualified healthcare professional. It is also important to distinguish a dose in milligrams from a product's concentration in mg/mL.
What strength is Testabol Depot 250 mg?
Testabol Depot 250 mg is labeled at 250 mg of testosterone cypionate per mL. It is supplied in a 10 mL vial, giving 2,500 mg of total labeled testosterone cypionate content per vial.
Is Testabol Depot 250 mg lab tested?
Yes. A published laboratory report dated March 23, 2026 measured Testabol Depot 250 mg at 276.21 mg/mL, equivalent to 110.48% of its 250 mg/mL label claim. The complete report can be viewed in the Lab Reports tab.
Does Testabol Depot 250 mg cause fertility issues?
Testosterone can suppress the body's own reproductive hormone signaling and reduce sperm production. Oligospermia may occur after prolonged administration or excessive dosage. The Endocrine Society notes that when men receive testosterone replacement therapy and hCG therapy for two or more years, it can lead to delays in the body's ability to recover normal levels of sperm and hormone production. Fertility is therefore an important consideration for men planning to have children.
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Product Information
Compound Details
Active Substance
Nandrolone Decanoate
Long-Acting 19-Nor Anabolic-Androgenic Steroid
250 mg/mL
Strength
250 mg/mL
Package
10 mL Vial
2,500 mg Total Labeled Content
Form
Oil-Based Injectable
Drug Class
Anabolic-Androgenic Steroid
Estimated Half-Life
Approximately 6–12 Days
Manufacturer
British Dragon
Lab Tested
British Dragon Pharmaceuticals
Product Information Compound Details
Active Substance Testosterone Enanthate Long-acting testosterone ester
250 mg/mLStrength 250 mg/mL
Package 10 mL Vial 2,500 mg total labeled content
Form Oil-Based Injectable
Estimated Half-Life Approximately 7–9 Days
Drug Class Androgen & Anabolic Steroid
Manufacturer British Dragon
British Dragon Pharmaceuticals
Product Information Compound Details
Active Substance Trenbolone Acetate Short-acting trenbolone ester
100 mg/mLStrength 100 mg/mL
Package 10 mL Vial 1,000 mg total labeled content
Form Oil-Based Injectable
Estimated Half-Life Approximately 1–2 Days
Drug Class Androgen & Anabolic Steroid
Manufacturer British Dragon
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Product Information Compound Details
Active Formula Testosterone Blend
350 mg/mLTestosterone Propionate 42 mg
Testosterone Isocaproate 84 mg
Testosterone Phenylpropionate 84 mg
Testosterone Decanoate 140 mg
Total Strength 350 mg/mL
Package 10 mL Vial 3,500 mg total labeled content
Form Oil-Based Injectable
Formula 4-Ester Testosterone Blend
Drug Class Androgen & Anabolic Steroid
Manufacturer British Dragon