Primoteston
Active Substance: Primoteston
Description
What is Primoteston?
Primoteston is a brand name for the injectable anabolic-androgenic steroid, testosterone enanthate. It is a long-acting ester of the male hormone testosterone, meaning it is modified to be slowly released into the body after an intramuscular injection. This "depot" effect allows for less frequent injections compared to other testosterone preparations.
Other Names for Testosterone Enanthate:
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Delatestryl
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Xyosted
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Testoviron Depot (in some regions)
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Androtardyl (in some regions)
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Generic names: Testosterone Enanthate
Benefits and Side Effects
Primoteston is medically used for androgen replacement therapy in males with confirmed testosterone deficiency, a condition known as hypogonadism.
Potential Benefits (for individuals with hypogonadism):
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Increased muscle mass and strength
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Improved bone density
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Better fat distribution
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Enhanced sex drive and sexual function
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Increased red blood cell production
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Improved energy levels and mood
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Development and maintenance of male secondary sexual characteristics
Potential Side Effects:
Side effects can vary and may be more severe with higher doses or misuse.
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Common Side Effects:
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Pain, redness, or bruising at the injection site
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Acne
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Hair loss or growth
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Fluid retention (edema) leading to weight gain
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Mood swings, irritability, or aggression
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Enlarged or painful breasts (gynecomastia)
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Headache
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Difficulty urinating due to prostate enlargement
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Serious Side Effects:
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Increased risk of heart attack, stroke, and other cardiovascular problems.
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Liver problems, including benign and malignant tumors.
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Increased risk of developing or worsening prostate cancer.
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Sleep apnea or worsening of pre-existing sleep apnea.
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Increased red blood cell count (polycythemia), which can lead to blood clots.
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Changes in cholesterol and lipid levels.
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Infertility due to a decrease in sperm production.
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Pros and Cons
Pros:
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Effective: It is an effective treatment for testosterone deficiency.
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Convenient: The long-acting nature of the ester means less frequent injections compared to other testosterone forms like propionate.
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Cost-effective: Generally less expensive than some other forms of testosterone therapy like gels or pellets.
Cons:
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Peaks and Troughs: While less frequent than other esters, the long injection interval can still lead to significant fluctuations in blood testosterone levels, which can cause side effects and inconsistent symptom control.
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Requires Injection: Unlike topical gels or oral medications, it requires intramuscular injection, which some people may find difficult or uncomfortable.
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Potential for Abuse: Due to its anabolic properties, it is a commonly abused substance, which carries significant health risks.
Dosage and Frequency
Dosage and frequency for medical treatment are highly individualized and determined by a doctor based on a patient's specific needs and blood testosterone levels.
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Typical Medical Dosage: 50-400 mg intramuscularly every 2 to 4 weeks.
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Initial Treatment: For the development of androgen-dependent organs and initial deficiency symptoms, 1 pre-filled syringe (250 mg) intramuscularly every 2-3 weeks.
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Maintenance: To maintain an adequate effect, 1 pre-filled syringe (250 mg) intramuscularly every 3-4 weeks. Shorter intervals may be necessary for some individuals.
Note: The manufacturer's recommended dosage is often a large single injection every few weeks, but many modern TRT (Testosterone Replacement Therapy) protocols use more frequent, smaller injections to maintain more stable blood levels and reduce side effects.
Half-Life and Detection Time
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Half-Life: The half-life of testosterone enanthate is approximately 7 to 9 days. This means it takes about 7 to 9 days for the body to metabolize and excrete half of the administered dose.
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Detection Time: The detection time can vary widely depending on the type of test, dosage, and individual metabolism. In a doping context, testosterone enanthate can be detected in the body for an extended period. Some sources suggest a detection time of several months, while others state it can be detected in urine for 3-5 months or longer.
Sterogenic, Progestogenic, and Prolactin Effects
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Sterogenic Effects: Testosterone is an androgenic steroid hormone. It can be converted by the body into other steroids, most notably estradiol (estrogen) via the aromatase enzyme. This conversion is a key factor in many of the side effects of testosterone use, such as gynecomastia (breast enlargement) and fluid retention.
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Progestogenic Effects: Testosterone itself is not a progestin and does not have direct progestogenic activity. However, some anabolic steroids can bind to progesterone receptors, which can increase the risk of certain side effects like gynecomastia. This is not a primary concern with testosterone enanthate itself, but it is a factor with other steroids.
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Prolactin Effects: While testosterone does not directly cause an increase in prolactin, the increase in estrogen levels from the aromatization of testosterone can indirectly lead to elevated prolactin levels. High prolactin can cause symptoms like lactation and gynecomastia. Managing estrogen levels is crucial for controlling potential prolactin-related side effects.
Anabolic Androgenic Ratio
The anabolic-androgenic ratio of testosterone is considered to be 100:100 (or simply 1:1). This ratio is used as a benchmark to compare other anabolic-androgenic steroids.
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Anabolic effect: Refers to the drug's ability to build muscle and increase protein synthesis.
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Androgenic effect: Refers to the drug's ability to produce male characteristics, such as increased body and facial hair, deepening of the voice, and enlarged prostate.
While testosterone has a 1:1 ratio, many synthetic steroids are designed to have a higher anabolic to androgenic ratio in an attempt to maximize muscle-building effects while minimizing unwanted male characteristics.
Pharmacological Properties
Half Life
4.5 days
Active Dose
70%
Detection
3.21 weeks
Concentration
250 mg/ml
Anabolic/Androgenic Profile
Usage Effectiveness
Activity Profile
Estrogenic
None
Progestanic
None
Water Retention
None
Aromatization
No
Benefits
Dosage Recommendations
Beginner
200-400 mg/week
Intermediate
400-600 mg/week
Advanced
600-800 mg/week
Evidence-based planning resources
Dive deeper into Primoteston cycle design, stacking options, and harm-reduction checklists available inside Anabolic Planner.
- Primoteston compound database overviewCompare Primoteston with other steroid agents in the structured compound index.
- Primoteston stack and cycle templatesReview evidence-based cycle outlines, dose progressions, and PCT pairings that incorporate Primoteston.
- Harm-reduction guide for PrimotestonRefresh safety monitoring, lab work, and countermeasure strategies tailored for Primoteston protocols.
Peer-reviewed reference material
Validate mechanisms, contraindications, and regulatory guidance for Primoteston with trusted clinical databases.
- Primoteston clinical research on PubMedSearch peer-reviewed human and veterinary studies discussing efficacy, endocrine impact, and contraindications.
- Primoteston pharmacology via Drug Information PortalReview mechanisms, synonyms, regulatory status, and toxicology summaries from the U.S. National Library of Medicine.
Side Effects
Common
Severe
Safety Information
Liver Toxicity
None
Kidney Toxicity
Low
Cardiovascular Risk
Moderate
Disclaimer: This information is for educational purposes only. Always consult with a qualified healthcare professional before using any compounds.