Dihydro Boldenone 100 mg/ml 10ml vial



Company: Synox Medicals
Active Half-life (Days): 7 days
Group: Anabolic Steroids
Subgroup: Injection
Dosage: 100 mg/ml
Application (Men): 300-500 mg a week
Product pack: 10ml vial
Content (active): Dihydro Boldenone
Oil-based: Yes
Retains water: No
Aromatization: No

Buy now


Dihydroboldenone Cypionate, also known as 1-Testosterone, is an anabolic steroid derived from boldenone (equipoise). It shares a similar structure to Primobolan (methenolone), but lacks the additional 1-methyl group found in Primobolan to enhance oral bioavailability.

Dihydroboldenone is a potent anabolic agent with moderate androgenic properties. Rat assays indicate that it is approximately twice as anabolic as testosterone propionate, while maintaining a similar level of androgenicity. This results in an anabolic-to-androgenic ratio of approximately 2. Bodybuilders value 1-Testosterone for its ability to promote significant muscle gains without excessive water retention or pronounced side effects.

Derived from dihydrotestosterone, 1-Testosterone contains an additional double bond between carbons 1 and 2 (1-ene). This modification stabilizes the 3-keto group and enhances the steroid’s anabolic properties.

1-Testosterone is considered a non-estrogenic steroid, as it does not exhibit estrogen-related side effects such as gynecomastia, fat deposition, or visible water retention. Muscle gains achieved with 1-Testosterone are typically of high quality, without the excessive bulk often associated with highly aromatizable steroids. Therefore, it is favored during cutting phases when minimizing water and fat retention is a primary concern.

Due to its weak aromatization nature, 1-Testosterone is expected to have a stronger negative impact on hepatic cholesterol management compared to testosterone or nandrolone. However, its effect is weaker than most c-17 alpha-alkylated steroids.

Like all anabolic/androgenic steroids, 1-Testosterone may have adverse effects on blood pressure, triglyceride levels, endothelial relaxation, and left ventricular hypertrophy, potentially increasing the risk of cardiovascular disease and myocardial infarction. It may cause slight irritation when injected and can produce skin/tissue redness and irritation with both injectable and transdermal delivery methods. Some users may experience a burning sensation during urination while using 1-Testosterone products. Although the cause of this side effect is poorly understood, it is generally considered an inconvenience rather than a dangerous issue. 1-Testosterone affects hematocrit less than boldenone itself. It is a compound similar to Primobolan but with greater strength gains.


  • Lean muscle gains accompanied by reductions in body fat
  • Twice as anabolic as testosterone
  • No estrogen-related side effects like gynecomastia
  • Less androgenic than testosterone
  • Promotes significant strength gains
  • No water retention
  • Suitable for both bulking and cutting phases

Side effects:

  • Oily skin and acne
  • Irritation at the injection site
  • Increased body and facial hair growth
  • Male pattern hair loss
  • Potential virilizing effects and clitoral enlargement in women
  • Reduction of HDL (good) cholesterol and increase of LDL (bad) cholesterol, potentially shifting the HDL to LDL balance in favor of arteriosclerosis
  • Rarely increases blood pressure
  • Possible mild liver toxicity


  • Half-life: 6-8 days
  • Frequency of injections: 5-7 days


1-Testosterone was never approved for human use, so prescribing guidelines are unavailable. For physique- or performance-enhancing purposes, a daily dosage typically ranges from 100-250 mg with oil-solubilized soft gels or 75-100 mg daily when applied transdermally. Injectable dosages would fall within the range of 100-400 mg per week (as 1-Testosterone Cypionate). The drug is typically used in cycles lasting 6-12 weeks.

Pharmaceutical form

Oily solution for intramuscular injection.


  • Pregnancy
  • Known or suspected carcinoma of the prostate or breast
  • Breast-feeding
  • Hypersensitivity to the active substance or any of the excipients
  • High blood calcium levels

How to store

  • Keep away from children
  • Store in a cool, dry place away from direct sunlight
  • Store at room temperature
  • Do not use after the expiry date