Sustanon 100

Active Substance: Sustanon 100

steroidinjectable

Description

What is Sustanon 100 (different name)

  • Brand name: Sustanon 100 (by Organon).

  • Type: Injectable testosterone blend.

  • Composition per 1 mL ampule:

    • Testosterone Propionate 20 mg (short ester)

    • Testosterone Phenylpropionate 40 mg (medium ester)

    • Testosterone Isocaproate 40 mg (medium/long ester)

This was the “lighter” version of the better-known Sustanon 250 (which has 4 esters totaling 250 mg). Sustanon 100 was intended for testosterone replacement therapy at a lower dose.


Benefits

  • Provides both fast-acting and medium-acting testosterone in one shot.

  • Maintains more stable testosterone levels than using a single ester.

  • Restores normal androgen levels in hypogonadal men.

  • In athletes, it can increase muscle mass, strength, and libido (off-label).


Side Effects

Same as other testosterone esters because it’s just testosterone in different forms:

  • Androgenic: oily skin, acne, hair loss (in predisposed individuals), increased body hair.

  • Estrogenic: water retention, gynecomastia (from aromatization to estradiol).

  • Cardiovascular/metabolic: changes in cholesterol, increased hematocrit.

  • Endocrine: suppression of endogenous testosterone production.

  • Injection site: mild pain or irritation.


Pros and Cons

Pros:

  • Combination of esters means fewer injections than pure propionate but faster onset than pure enanthate/cypionate.

  • Long clinical track record.

Cons:

  • Discontinued in many countries.

  • You’re still getting aromatization and DHT conversion, so side effects are essentially the same as any testosterone ester.

  • Because it’s only 100 mg per ampule, frequent injections are needed for supraphysiologic bodybuilding doses.


Dosage & Frequency (therapeutic vs. off-label)

  • Therapeutic: 1 mL IM every 1–3 weeks (as originally prescribed).

  • Athletic/off-label: often much higher or more frequent, but that raises side-effect risk; no official guidance exists for this.


Half-Life & Detection Time

  • The mix gives a biological half-life ~4–7 days overall (propionate ~2 days, phenylpropionate ~4.5 days, isocaproate ~7 days).

  • Detection time (anti-doping): testosterone esters can leave metabolites detectable for weeks. After a single injection you can still test positive for 3–6 weeks depending on dose and testing sensitivity.


Sterogenic / Progestrogenic / Prolactin Effects

  • Sterogenic/androgenic: yes (testosterone is the archetypal androgen).

  • Progestogenic: no—testosterone itself has virtually no progestin activity.

  • Prolactin: no direct effect, but higher estrogen from aromatization can secondarily elevate prolactin in some individuals.


Anabolic : Androgenic Ratio

For testosterone (the only active hormone here):

  • Anabolic:Androgenic ratio ≈ 100:100 (1:1)

This ratio is intrinsic to testosterone itself; changing the ester doesn’t change the anabolic/androgenic potency, just the release pattern.

Pharmacological Properties

Half Life

7 days

Active Dose

74%

Detection

5.00 weeks

Concentration

250 mg/ml

Anabolic/Androgenic Profile

Anabolic Rating100
Androgenic Rating100

Usage Effectiveness

Bulking
Cutting
Strength
Recomposition

Activity Profile

Estrogenic

None

Progestanic

None

Water Retention

None

Aromatization

No

Benefits

✓ Increased Muscle Mass ✓ Improved Strength Gains ✓ Improved Libido

Dosage Recommendations

Beginner

200-400 mg/week

Intermediate

400-600 mg/week

Advanced

600-800 mg/week

Side Effects

Common

⚠ Acne ⚠ Oily Skin ⚠ Hair Loss (Male Pattern Baldness) ⚠ Increased Body Hair Growth ⚠ Water Retention ⚠ Gynecomastia (Male Breast Enlargement) ⚠ Testosterone Suppression ⚠ Injection Site Pain

Severe

⚠ Elevated Cholesterol (LDL) ⚠ Reduced HDL Cholesterol

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.