Enclomiphene

Important Safety Information

Off-label use: Enclomiphene is not FDA-approved, but clinical studies have evaluated its use for male hypogonadism and fertility support. Patients should understand its regulatory status and ensure it is obtained from a reliable source.

Monitoring: Ongoing monitoring is recommended, including testosterone and estradiol levels, semen analysis, and evaluation for any contraindications (such as liver disease or pituitary abnormalities).

Indications/Use

• Investigational use for secondary (hypogonadotropic) hypogonadism in men who wish to maintain or improve fertility.

• Functions as an estrogen receptor blocker in the hypothalamus, increasing GnRH, LH, and FSH production—supporting natural testosterone and sperm production.

Contraindications

• Allergy or hypersensitivity to enclomiphene or related medications (e.g., clomiphene).
• Liver disease or impaired liver function.
• Known or suspected pituitary or hypothalamic tumors, as the medication stimulates these pathways.
• Use caution in individuals with elevated prolactin; diagnostic imaging (such as MRI) is often recommended prior to starting therapy.

Side Effects

• Common: Hot flashes or night sweats (due to aromatization), mood changes, headaches, and occasional visual symptoms (e.g., blurred vision).
  
• Gastrointestinal: Nausea, abdominal discomfort.
  
• Reproductive: Testicular sensitivity from increased activity, erection changes. Note: Enclomiphene can increase the likelihood of multiple pregnancies in women, though this is not relevant for male patients.
  
• Thromboembolic risk: Rare but possible because of its interaction with estrogen pathways.
  
• Long-term use: Limited long-term data; extended therapy should be approached with caution.
  
• Other: Sleep disturbances, swelling, and nipple sensitivity may also occur.