Boldenone Propionate
Active Substance: Boldenone Propionate
steroidinjectablepropionate
Description
Boldenone propionate is a synthetic anabolic-androgenic steroid (AAS) that is a derivative of testosterone. It is a shorter-acting version of boldenone, which is most commonly found as boldenone undecylenate (Equipoise). Boldenone was originally developed for veterinary use, primarily in horses, to promote lean body weight and improve appetite, and has no approved therapeutic use for humans in the US.
Other Names
Boldenone propionate is an esterified variant of boldenone. While the most well-known form is Boldenone Undecylenate (Equipoise), boldenone propionate is sometimes referred to as "Equipoise Propionate" or other names that indicate its shorter ester.
Side Effects and Benefits
Benefits:
Increased muscle mass: Boldenone stimulates protein synthesis, which can lead to increased muscle mass.
Increased red blood cell count: Boldenone can stimulate the release of erythropoietin in the kidneys, which increases red blood cell production. This can improve oxygen delivery to muscles, enhancing endurance.
Increased appetite: Boldenone is known to increase appetite, which can be beneficial for those aiming to gain weight and muscle mass.
Side Effects:
Androgenic side effects: These can include acne, increased hair growth on the face and body (hirsutism), male pattern baldness (androgenic alopecia), and a deeper voice. In women, it can cause virilization.
Cardiovascular issues: AAS use can lead to negative effects on the cardiovascular system, including changes in cholesterol levels (decreasing HDL, "good" cholesterol, and increasing LDL, "bad" cholesterol), and an increased risk of heart disease, heart attack, and stroke.
Liver and kidney damage: Long-term or high-dose use of AAS can have negative effects on liver and kidney health.
Reproductive system harm: In men, boldenone can significantly decrease natural testosterone production, seminal volume, sperm count, and sperm motility. It can also lead to testicular atrophy (decreased testes size).
Psychological effects: Mood changes, including irritability and aggression, have been reported.
Pros and Cons
Pros:
As an anabolic steroid, it can promote muscle growth and strength gains.
The propionate ester provides a faster onset of action compared to the longer undecylenate version.
It has a low rate of aromatization (conversion to estrogen) compared to some other steroids, which may lead to less water retention.
Cons:
Boldenone is not approved for human use and is banned by all major sports organizations.
It carries significant and potentially irreversible health risks, including harm to the reproductive, cardiovascular, and other organ systems.
It can cause a rapid and significant decrease in the body's natural testosterone production.
Boldenone Propionate would require more frequent injections compared to its undecylenate counterpart due to its shorter half-life.
Dosage and Frequency
There is no medically approved dosage for boldenone propionate for humans. Information regarding typical dosages and frequencies is based on illicit use. The dosage and frequency would be determined by the specific ester. Due to the shorter propionate ester, injections would need to be more frequent than with boldenone undecylenate.
Half-Life and Detection Time
Half-life: Boldenone propionate has a relatively short half-life compared to the undecylenate ester. While sources for the specific propionate ester are limited, an intramuscular injection of a testosterone propionate ester has a half-life of about one day. Given the similar structure, boldenone propionate is expected to have a comparable short half-life. In contrast, boldenone undecylenate has a long half-life of around 14 days.
Detection time: Despite a shorter half-life for the propionate ester, boldenone itself has a very long detection time due to the presence of long-lived metabolites. Boldenone can be detected in a steroid test for an extended period, in some cases up to 1.5 years after discontinuation. This is a major reason why it is a common substance for which athletes test positive.
Estrogenic, Progestogenic, and Prolactin Effects
Estrogenic: Boldenone has a low rate of aromatization (conversion to estrogen), about 50% of that of testosterone. This means it has a lower propensity to cause estrogen-related side effects like gynecomastia (breast tissue growth in males) and water retention.
Progestogenic: There is limited data on the progestogenic activity of boldenone, but it is generally thought to have low or no such activity.
Prolactin: Boldenone is not known to directly increase prolactin levels, unlike some other anabolic steroids such as nandrolone and trenbolone. However, any steroid-induced hormonal imbalance can indirectly affect other systems.
Anabolic Androgenic Ratio
The anabolic-to-androgenic ratio is a measure of a steroid's ability to promote tissue growth versus its ability to cause masculinizing effects.
Boldenone's anabolic-to-androgenic ratio is often cited as being around 100:50, meaning it is considered to have a strong anabolic effect and a moderate androgenic effect.
For comparison, testosterone's ratio is considered to be 100:100.
Pharmacological Properties
Half Life
2 days
Active Dose
80%
Detection
10.00 days
Concentration
250 mg/ml
Anabolic/Androgenic Profile
Anabolic Rating100
Androgenic Rating50
Usage Effectiveness
Bulking
⭐⭐⭐☆☆
Cutting
⭐⭐⭐☆☆
Strength
⭐⭐⭐☆☆
Recomposition
⭐⭐⭐☆☆
Activity Profile
Estrogenic
None
Progestanic
None
Water Retention
None
Aromatization
No
Benefits
✓ Increased Muscle Mass ✓ Improved Strength Gains ✓ Increased Endurance ✓ Enhanced Protein Synthesis ✓ Increased Red Blood Cell Production
Dosage Recommendations
Beginner
200-400 mg/week
Intermediate
400-600 mg/week
Advanced
600-800 mg/week
Evidence-based planning resources
Dive deeper into Boldenone Propionate cycle design, stacking options, and harm-reduction checklists available inside Anabolic Planner.
- Boldenone Propionate compound database overviewCompare Boldenone Propionate with other steroid agents in the structured compound index.
- Boldenone Propionate stack and cycle templatesReview evidence-based cycle outlines, dose progressions, and PCT pairings that incorporate Boldenone Propionate.
- Harm-reduction guide for Boldenone PropionateRefresh safety monitoring, lab work, and countermeasure strategies tailored for Boldenone Propionate protocols.
Peer-reviewed reference material
Validate mechanisms, contraindications, and regulatory guidance for Boldenone Propionate with trusted clinical databases.
- Boldenone Propionate clinical research on PubMedSearch peer-reviewed human and veterinary studies discussing efficacy, endocrine impact, and contraindications.
- Boldenone Propionate pharmacology via Drug Information PortalReview mechanisms, synonyms, regulatory status, and toxicology summaries from the U.S. National Library of Medicine.
Side Effects
Common
⚠ Acne ⚠ Oily Skin ⚠ Hair Loss (Male Pattern Baldness) ⚠ Increased Body Hair Growth ⚠ Testosterone Suppression ⚠ Testicular Atrophy ⚠ Reduced Sperm Count ⚠ Irritability ⚠ Increased Aggression ⚠ Mood Swings
Severe
⚠ Deepening of Voice (in females) ⚠ Virilization (in females) ⚠ Increased Blood Pressure ⚠ Elevated Cholesterol (LDL) ⚠ Reduced HDL Cholesterol ⚠ Cardiovascular Strain ⚠ Liver Toxicity (Hepatotoxicity) ⚠ Kidney Strain
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.