Injectable

Isotest 250

250 mg/mL

Isotest 250 is a four-ester testosterone blend combining propionate, phenylpropionate, isocaproate, and decanoate ester profiles. Each component ultimately delivers testosterone after ester cleavage.

Product information is provided for professional reference only. Use must comply with applicable laws and be directed by a qualified healthcare professional.
Isotest 250 product packaging

Product Summary

Product
Isotest 250
Strength
250 mg/mL
Dosage Form
Injectable

Product Information

Professional injectable product profile.

Product overview: Isotest 250 is an oil-based injectable testosterone blend containing four esterified testosterone components: propionate, phenylpropionate, isocaproate, and decanoate. The total testosterone ester content is 250 mg per 1 mL.

Formulation profile: The ester combination provides differing release characteristics within a single formulation. Although the esters differ, each component ultimately delivers testosterone after ester cleavage, so testosterone-related review remains central.

Important considerations: Relevant considerations include hormonal suppression, estrogenic effects, fertility changes, elevated red-blood-cell levels, and cardiovascular risk. The verified carrier system includes pharmaceutical-grade carrier oil, benzyl benzoate, benzyl alcohol, and Miglyol 840. Blend presentation should not obscure that all four components ultimately contribute testosterone exposure. The table records each ester separately for specification clarity and product review.

Product nameIsotest 250
Strength250 mg/mL
Active ingredient or blendTestosterone Propionate, Testosterone Phenylpropionate, Testosterone Isocaproate, and Testosterone Decanoate
Composition per 1 mLTestosterone Propionate 30 mg
Testosterone Phenylpropionate 60 mg
Testosterone Isocaproate 60 mg
Testosterone Decanoate 100 mg
Total testosterone esters: 250 mg
Oil-based injectable solution
Dosage formOil-based injectable solution
Carrier oilPharmaceutical-grade carrier oil; benzyl benzoate; benzyl alcohol; Miglyol 840
Pharmaceutical gradePharmaceutical grade carrier system stated in the source

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