Fluoxymesterone Side Effects

Brand Names: Halotestin

Please note - some side effects for Fluoxymesterone may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA at http://www.fda.gov/medwatch/ or 1-800-FDA-1088 (1-800-332-1088).

Side Effects of Fluoxymesterone - for the Consumer

Fluoxymesterone

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Fluoxymesterone:

Changes in sexual desire; absence of menstrual flow; acne; breast swelling or tenderness; deepening of voice; growth of facial hair; headache; irregular menstrual flow; mood changes; painful, prolonged erection; swelling of the clitoris.

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); ankle swelling; change in skin color; nausea; vomiting; weight gain.

Side Effects by Body System

Dermatologic

Dermatologic side effects have included hirsutism, seborrhea, and acne. While alopecia usually presents as male pattern baldness, patchy alopecia has also been reported in some female patients.

Gastrointestinal

Gastrointestinal side effects have included nausea and vomiting.

Hepatic

Hepatic side effects have included cholestatic jaundice, alterations in liver function tests, and rarely hepatocellular neoplasms and peliosis hepatitis. Patients should be instructed to report any changes in skin color, abdominal pain lasting more than a few days, white bowel movements, dark urine, or yellowing of the eyes.

Hematologic

Hematologic side effects have included suppression of clotting factors II, V, VII, and X, polycythemia and bleeding in patients on concomitant anticoagulant therapy .

Nervous system

Nervous system side effects have included increased or decreased libido, headache, anxiety, depression, and generalized paresthesia.

Hypersensitivity

Hypersensitivity side effects have included skin manifestations and anaphylactoid reactions.

Renal

Renal side effects have included retention of nitrogen, sodium, potassium, chloride, water and phosphorus, and decreased urinary excretion of calcium. Patients should be instructed to report edema.

Genitourinary

Genitourinary side effects in male patients have included gynecomastia, and excessive frequency and duration of penile erections. Oligospermia has been reported at higher dosages. Male patients should be instructed to report too frequent or persistent erections of the penis. Patients with benign prostatic hypertrophy may develop acute urethral obstruction.

Genitourinary side effects in female patients have included amenorrhea and other menstrual irregularities, inhibition of gonadotropin secretion, and virilization, including deepening of the voice and clitoral enlargement. The latter usually is not reversible after androgens are discontinued. When administered to a pregnant woman, androgens can cause virilization of external genitalia of the female fetus. Female patients should be instructed to report any hoarseness, acne, changes in menstrual periods or increase in facial hair.

Endocrine

Endocrine side effects have included increases in serum cholesterol. Large doses of exogenous androgens may suppress spermatogenesis through inhibition of pituitary follicle stimulating hormone (FSH).

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