Finasteride is an oral prescription medication that belongs to 5-alpha reductase inhibitors class of drugs. It is used to treat benign prostatic hypertrophy (enlargement of the prostate gland) and to treat male pattern baldness (gradual thinning of the scalp), leading to receding hairline or balding on the top of the head in men). 

If you are prescribed Finasteride, you may worry about some of the drug’s side effects, such as Gynecomastia (male breast enlargement). This article will help you to understand more about it. 

Does Finasteride cause gynecomastia (male breast enlargement)?

Finasteride may cause gynecomastia in some men. Studies suggest that Finasteride-induced male breast enlargement is more common with a 1 mg dose of Finasteride than 5 mg. 

Finasteride-induced gynecomastia usually begins as early as a few weeks but may develop after a few months if it occurs. The critical symptom to watch out before gynecomastia occurs is breast tenderness, which occurs during the last enlargement. 

However, not everyone may have this effect. You can talk to your doctor to understand your risk for breast enlargement.

Does Finasteride induced gynecomastia go away?

Finasteride-included gynecomastia may reverse in some individuals if the treatment with the medicine is discontinued in the early stages when the symptom appears. However, if the treatment with Finasteride is not stopped, it may enter an irreversible stage and may not go away. 

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Is Finasteride induced gynecomastia one side or both?

Usually, Finasteride-induced gynecomastia is one-sided, but, in some cases, it can be both sides as well. It is mainly seen with lower doses, i.e., 1 mg compared to 5 mg.

Is a low dose of Finasteride more likely to induce gynecomastia than a high dose?

For treating the male pattern baldness, 1 mg of Finasteride dose is recommended. The risk of developing gynecomastia is higher at higher doses. However, in some cases, 1 mg may also cause gynecomastia. 

While in some cases, a 0.5 mg dose of Finasteride may benefit their hair and reduce the risk of gynecomastia. Your doctor may recommend you an appropriate dose based on your condition. 

What are the chances of gynecomastia from Finasteride?

Gynecomastia is a rare side effect of the drug. The likeliness of having gynecomastia is between 4-10 out of every 1000 users. The risk of developing gynecomastia is higher in the obese population, increasing with age. 

Does Finasteride cause breast enlargement in women?

Finasteride is approved for the treatment of androgenic alopecia in men only. It is not indicated for use in women. Thus, no data on breast enlargement in women is available.


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