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Proscar prevents the conversion of testosterone to dihydrotestosterone (DHT) in the body. DHT is involved in the development of benign prostatic hyperplasia (BPH).
Proscar is used to treat symptoms of benign prostatic hyperplasia (BPH) in men with an enlarged prostate.
Proscar may also be used for purposes not listed in this medication guide.
Proscar should never be taken by a woman or a child. Finasteride can be absorbed through the skin, and women or children should not be permitted to handle Proscar tablets.
Although Proscar is not for use by women, this medication can cause birth defects if a woman is exposed to it during pregnancy. Proscar tablets should not be handled by a woman who is pregnant or who may become pregnant. If a woman accidentally comes into contact with this medication from a broken or crushed tablet, wash the area with soap and water right away.
Before taking Proscar, tell your doctor if you have ever had an allergic reaction to finasteride, or to a similar medicine called dutasteride (Avodart).
Using Proscar may increase your risk of developing prostate cancer. Your doctor will perform tests to make sure you do not have other conditions that would prevent you from safely using Proscar.
Call your doctor at once if you notice any breast lumps, pain, nipple discharge, or other breast changes. These may be signs of male breast cancer.
Proscar should never be taken by a woman or a child. Finasteride can be absorbed through the skin, and women or children should not be permitted to handle Proscar tablets.
To make sure you can safely take Proscar, tell your doctor if you have ever had:
liver disease, or abnormal liver function tests;
prostate cancer;
a bladder muscle disorder;
stricture of your urethra;
urination problems; or/p>
an allergic reaction to a similar medicine called dutasteride (Avodart).
Using Proscar may increase your risk of developing prostate cancer. Your doctor will perform tests to make sure you do not have other conditions that would prevent you from safely using finasteride.
Although Proscar is not for use by women, this medication can cause birth defects if a woman is exposed to it during pregnancy. Proscar tablets should not be handled by a woman who is pregnant or who may become pregnant. If a woman accidentally comes into contact with this medication from a broken or crushed tablet, wash the area with soap and water right away.
Take Proscar exactly as prescribed by your doctor. Do not take it in larger amounts or for longer than recommended. Follow the directions on your prescription label.
Take this medicine with a full glass of water.
Proscar can be taken with or without food. Take the medicine at the same time each day.
To be sure Proscar is helping your condition and not causing harmful effects, your blood may need to be tested often. Your doctor will also test your prostate specific antigen (PSA) to check for prostate cancer. Visit your doctor regularly.
Use Proscar regularly to get the most benefit. Get your prescription refilled before you run out of medicine completely.
Store Proscar at room temperature away from moisture, heat, and light. Keep the bottle tightly closed when not in use.
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
Get your prescription refilled before you run out of medicine completely.
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
Avoid getting up too fast from a sitting or lying position, or you may feel dizzy. Get up slowly and steady yourself to prevent a fall.
Get emergency medical help if you have any of these signs of an allergic reaction to Proscar: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you notice any breast lumps, pain, nipple discharge, or other breast changes. These may be signs of male breast cancer.
Less serious Proscar side effects may include:
impotence, loss of interest in sex, or trouble having an orgasm;
abnormal ejaculation;
swelling in your hands or feet;
swelling or tenderness in your breasts;
dizziness, weakness;
feeling like you might pass out;
headache;
runny nose; or
skin rash.
The sexual side effects of Proscar (decreased libido, trouble having an erection, ejaculation problems) may continue after you stop taking this medication. Talk to your doctor if you have concerns about these side effects.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
There may be other drugs that can interact with Proscar Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.
Finasteride is available with a prescription under the brand names Proscar and Propecia. Other brand or generic formulations may also be available. Ask your pharmacist any questions you have about this medication, especially if it is new to you.
Proscar 5 mg - blue, apple-shaped, film-coated tablets
Propecia 1 mg - tan, eight-sided, film-coated tablets
Medically reviewed by USARx EDITORIAL TEAM Last updated on 1/1/2020.
Source: Drugs.com Proscar (www.drugs.com/proscar.html).
Note: This document contains side effect information about finasteride. Some of the dosage forms listed on this page may not apply to the brand name Proscar.
Common side effects of Proscar include: impotence and decreased libido. See below for a comprehensive list of adverse effects.
Applies to finasteride: oral tablet
Along with its needed effects, finasteride (the active ingredient contained in Proscar) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur while taking finasteride:
More common
Less common
Incidence not known
Some side effects of finasteride may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
More common
Less common
Less common or rare
Incidence not known
Applies to finasteride: oral tablet
Most men were older and were taking concomitant medications and/or had comorbid conditions:
Very common (10% or more): Impotence (up to 18.5%)
Common (1% to 10%): Abnormal ejaculation, decreased ejaculatory volume, abnormal sexual function, gynecomastia, erectile dysfunction, ejaculation disorder, testicular pain, male infertility and/or poor seminal quality
Two hundred fourteen reports of gynecomastia in men taking finasteride in the United States were received by the FDA between June 1992 and February 1995. Among those reported, fifty eight percent were taking additional medications that have been associated with gynecomastia. Sixty nine of 86 patients who discontinued finasteride treatment had partial or complete remission.
New reports of drug-related sexual adverse experiences have been reported to decrease with duration of therapy.
Erectile dysfunction has been reported to continue beyond treatment discontinuation. Normalization or improvement of seminal quality has been reported after withdrawing finasteride treatment.
Finasteride may cause a decrease in PSA levels in patients with benign prostatic hyperplasia as well as in patients with prostate cancer. In one study, mean PSA reductions of 50% were noted, regardless of baseline levels. There was no indication that PSA levels were further suppressed in patients with prostate cancer.
PSA levels are commonly used in the screening process for prostate cancer. Patients who develop sustained increases in PSA while on finasteride (the active ingredient contained in Proscar) therapy should be carefully evaluated for medical causes as well as noncompliance.
Uncommon (0.1% to 1%): Breast tenderness, breast enlargement
Frequency not reported: Reductions in prostate specific antigen (PSA) levels of approximately 50%
Common (1% to 10%): Decreased libido, dizziness, somnolence
Frequency not reported: Headache
Common (1% to 10%): Postural hypotension, hypotension
Postmarketing reports: Palpitations
Frequency not reported: A prevention or delay in the appearance of prostate cancer, an increased risk of high-grade prostate cancer
Postmarketing reports: Rare cases of male breast cancer
Frequency not reported: Nausea, flatulence, abdominal pain
A 58 year old man presented with an itchy, lumpy rash on upper and lower extremities following two weeks of finasteride (the active ingredient contained in Proscar) treatment for prostatism. The patient had no known allergies and was taking no other medications prior to the episode. The finasteride was discontinued and dapsone was initiated. The rash resolved two weeks after finasteride therapy was stopped.
Rare (less than 0.1%): Rash
Very rare (less than 0.01%): Cutaneous leukocytoclastic vasculitis, solitary fixed drug eruption
Postmarketing reports: Pruritus, urticaria, angioedema (including swelling of the lips, tongue, throat, and face)
Frequency not reported: Pruritus, urticaria, angioedema of the lips, tongue, throat, and face
Common (1% to 10%): Edema
Uncommon (0.1% to 1%): Rhinitis, dyspnea
Frequency not reported: Depression
Frequency not reported: Asthenia
Frequency not reported: Increased hepatic enzymes
Medically reviewed by USARx EDITORIAL TEAM Last updated on 1/1/2020.
Source: Drugs.com Proscar (www.drugs.com/proscar.html).
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