Testosterone Cypionate / Enanthate (90% / 10%) Injection

Available Dosage Strengths

200 mg/mL  |  200 mg/mL

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Product Overview

Cypionate 90%_Enanthate 10% Injection is a compounded injectable testosterone ester blend consisting of 90% testosterone cypionate and 10% testosterone enanthate. Both esters have been studied for their effects as long-acting testosterone esters used in testosterone replacement therapy (TRT) to treat male hypogonadism. This combination aims to leverage the pharmacokinetic profiles of both esters to provide a more stable and sustained release of testosterone, potentially reducing the frequency of injections and minimizing fluctuations in hormone levels. Testosterone enanthate has a half-life (7 days) that is slightly shorter than testosterone cypionate (8 days).3,4 Testosterone that has not been esterified has a half-life of as short as 10 minutes. Thus, the esterification process increases the half-life dramatically.1-7

Testosterone cypionate and testosterone enanthate are both esterified forms of testosterone. The esterification occurs on the 17b carbon of the testosterone structure. The esters extend the duration of action and are useful for less frequent, intramuscular, or subcutaneous injections.  Once administered, the esters are cleaved, releasing free testosterone into the bloodstream. Testosterone then binds to androgen receptors in various tissues, exerting anabolic and androgenic effects. Testosterone has a role in influencing the development and maintenance of male secondary sexual characteristics, stimulation of muscle and bone growth, and regulation of libido and mood. 1,2,5-7

Common:1

  • Acne
  • Hypertension
  • Injection site pain or inflammation
  • Mood swings or irritability
  • Increased or decreased libido
  • Gynecomastia

Contraindications: 1

  • Known hypersensitivity to testosterone or either ester component
  • Known hypersensitivity to grapeseed oil
  • Males with carcinoma of the breast or known or suspected carcinoma of the prostate
  • Pregnant or breastfeeding women
  • Patients with serious cardiac, hepatic, or renal disease

Precautions:

  • Monitor hematocrit and hemoglobin levels
  • Regularly assess liver function tests
  • Evaluate lipid profiles periodically
  • Monitor for signs of sleep apnea
  • Use cautiously in patients with a history of cardiovascular disease

Store at 20°C to 25°C (68°F to 77°F) in a dry place, away from heat and light. DO NOT REFRIGERATE. Do not freeze. Keep out of reach of children.

  1. Clinical Pharmacology Testosterone clinical monograph accessed May 8 2025 ; https://www.clinicalkey.com/pharmacology/monograph/595?n=Testosterone 
  2. https://go.drugbank.com/drugs/DB13944 
  3. Pubchem testosterone enanthate. https://pubchem.ncbi.nlm.nih.gov/compound/Testosterone-Enanthate#section=Metabolism-Metabolites. Accessed July 6, 2025
  4. Pubchem testosterone cypionate. https://pubchem.ncbi.nlm.nih.gov/compound/Testosterone-Cypionate#section=Metabolism-Metabolites. Accessed July 6, 2025
  5. Mayo Clinic. Testosterone cypionate (intramuscular route). https://www.mayoclinic.org/drugs-supplements/testosterone-cypionate-intramuscular-route/description/drg-20563731 
  6. Testosterone enanthate [package insert] Hikma Pharmaceuticals USA Inc. Berkeley Heights, NJ 07922, revised January 2021, accessed May 2025 through: https://www.accessdata.fda.gov/spl/data/d56a5e5d-c88f-4f0d-84b4-1be06ca6ebba/d56a5e5d-c88f-4f0d-84b4-1be06ca6ebba.xml
  7. Depo Testosterone(Testosterone Cypionate) [package insert] Pfizer Inc NY, NY 10017, revised July 2018, accessed May 2025 through: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/085635s040lbl.pdf

This information is for educational purposes only. This compounded product has not been reviewed, approved, or evaluated by the Food and Drug Administration for safety and effectiveness. This product is not intended to diagnose, treat, cure, or prevent any disease. No claims are made regarding treatment, cure, or prevention of any disease or condition.

This information may not cover all possible drug information about this product. Call your doctor for medical advice and/or about side effects. You may report side effects to the FDA at 1-800-FDA-1088.  A Wells Pharmacy Network pharmacist will be happy to answer any questions. For consultation, please call 1-800-622-4510.

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