Generic
Finasteride
3 brands available in the market
At a glance
Finasteride is a 5-alpha reductase inhibitor used for the treatment of hair loss and benign prostatic hyperplasia in men.
Description
Finasteride is used to treat hair loss in men. It is used to increase hair growth and prevent further hair loss with male pattern baldness (gradual thinning of hair with receding hairline or thinning on the top of the head).
Finasteride is a 5-alpha reductase inhibitor. It blocks the body's production of a male hormone in the scalp that stops hair growth, thereby reversing the balding process and preventing further hair loss.
Indications
- Benign Prostatic Hyperplasia (BPH): Used for treatment and control of BPH (regression of prostate, improved urinary flow, improved symptoms).
- Male Pattern Baldness: Used for treatment of hair loss in men.
Therapeutic class
BPH/ Urinary retention/ Urinary incontinence
Pharmacological class
5-alpha Reductase Inhibitor
Pharmacology
Finasteride, a competitive inhibitor of the 5α reductase enzyme which is used in the treatment of benign prostatic hyperplasia. It is selective for 5α reductase type 2 enzyme and has no affinity for androgen receptors. The development of the prostate gland and subsequent BPH is dependent upon conversion of testosterone to dihydrotestosterone (DHT) within the prostate.
Mechanism of action
Finasteride competitively inhibits the 5α-reductase enzyme, preventing conversion of testosterone to DHT, thereby decreasing serum DHT levels.
Dosage
Adult Dose (Oral):
- BPH: 5 mg once daily for at least 6 months.
- Male Pattern Baldness: 1 mg once daily for at least 3 months.
Hepatic impairment: Caution in liver dysfunction; monitor.
Administration
Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Finasteride may be taken with or without food, but it is better to take it at a fixed time.
Missed dose
If you miss a dose of Finasteride, take it as soon as possible; however, if it is almost time for your next dose, skip the missed dose.
Side effects
Common Side Effects (1% in BPH):
- Impotence (3.7%)
- Decreased libido (3.3%)
- Decreased volume of ejaculate (2.8%)
Precautions & warnings
Precautions:
- Finasteride does not usually affect your ability to drive.
- Beneficial response may not be immediate; monitor patients with large residual urine volume and/or severely diminished urinary flow.
- Digital rectal examination and other evaluations for prostate cancer should be performed before and periodically during BPH treatment.
- Pregnant women should not handle crushed or broken tablets (risk to male fetus from absorption).
- If you discontinue the medicine, you may lose the hair you grew while on it.
Contraindications
Contraindications:
- Hypersensitivity
- Women and pediatric patients
- Pregnancy and lactation
Drug interactions
Drug Interactions: No clinically important drug interactions identified; does not significantly affect cytochrome P450-linked drug metabolizing enzyme system.
Food interactions
Food Interactions: It is not known whether it is safe to consume alcohol with Finasteride; consult your doctor.
Use in pregnancy
Use in Pregnancy: Highly unsafe; animal and human studies have shown significant harmful effects; pregnant women should not handle crushed or broken tablets.
Pregnancy Category: X — always consult a doctor before taking during pregnancy.
Use in lactation
Use in Lactation: Information regarding use during breastfeeding is not available; consult your doctor.
Pediatric use
Pediatric Use: Not indicated for children.
Geriatric use
Geriatric Use: No dosage adjustment is required in elderly patients.
Renal / hepatic impairment
Renal Impairment: Safe to use in patients with kidney disease; no dose adjustment recommended.
Hepatic Impairment: Limited information available; use with caution.
Overdose effects
Overdose: Limited information on overdose; symptomatic treatment.
Storage conditions
Storage: Store below 30 degree C in a cool and dry place, protected from light and moisture. Keep out of reach of children.
Chemical structure
Finasteride