Q: What do I do if I start experiencing side effects on finasteride? — L.L. ~ Riverdale, N.Y.
A: Don’t panic, just stop the medication and let your doctor know. He or she will give you guidance based on your symptoms.
Posted byQ: Is it possible that side effects attributed to the use of Minoxidil 5% lotion can reduce over time or disappear altogether? Specifically I experienced a heightened sense of heart activity (palpitations). — D.D., Bronxville, NY
A: Yes, the side effects may diminish over time.
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The central finding of a 2004 study led by Italian researcher Dr. Antonella Tosti, in which he and his team investigated sexual dysfunction in hair loss patients being treated for androgenetic alopecia, was that there was no statistically significant change in sexual function after four to six months of treatment with finasteride 1mg (Propecia).
The researchers used a questionnaire, called the abridged 5-item version of the International Index of Erectile Function (IIEF-5), to measure sexual function in the men in the study. The questionnaire, which is considered an internationally valid diagnostic tool for distinguishing between men with and without erectile dysfunction, asks the patients 15 questions on the topics of: erectile function, orgasmic function, sexual desire, intercourse satisfaction, and overall sexual satisfaction. By administering the questionnaire both before and after treatment with finasteride, the researchers were able to determine if sexual function was impaired by the treatment.
The result of this investigation in the sexual function of 186 patients was that, “the erectile function of all patients remained stable after 4 to 6 months of treatment with finasteride 1 mg.”
Interestingly, the research team found that sexual side effects were actually less common than reported in the clinical trials of the drug. They suggest that this difference was potentially due to the fact that subjects in the clinical trials were made aware of the potential for sexual side effects, and were asked about these side effects upon each visit, which led to higher reporting of side effects than what would otherwise be the case.
Reference:
Tosti A, Pazzaglia M, Soli M, Rossi A, Rebora A, Atzori L, Barbareschi M, Benci M, Voudouris S, Vena GA. Evaluation of Sexual Function With an International Index of Erectile Function in Subjects Taking Finasteride for Androgenetic Alopecia. Arch Dermatol. 2004;140:857-858.
Download the Tosti study of erectile function and finasteride 
Q: You prescribed Propecia for my hair loss. I was wondering if the news report on Propecia side effects has altered your opinion regarding the safety of this drug? — N.D., Belle Meade, Tennessee
A: It has not changed. I believe you are referring to Dr. Michael Irwig’s study at George Washington University published in the Journal of Sexual Medicine. I was already aware of the study when I prescribed the medication for you and we discussed the risk of persistent side effects at your consult.
Although all types of data should be considered, it is important to realize that this was not a scientific study, but a survey. It had very significant selection bias. From this type of study, one can’t prove cause and effect relationships or even get a sense of actual incidences. These were patients who were recruited because they already had persistent sexual dysfunction. Since it is not clear if their persistent problems were directly due to the medication or from other factors, and since these patients were selected, rather than randomly assigned, the additional information can be gained from the report is very limited.
That said, the reporting of persistent side effects should not be taken lightly, but should be viewed in the context of all available data. It is extremely important for us to continue to be vigilant, as this is a very significant issue, but it is equally important not to make decisions on data sensationalized in the media. As a result of the finasteride data, some are presenting surgery as a more reasonable alternative than medication. For a young person, that is usually not the case.
Posted byQ: I’ve now been taking finasteride for just over 5 months. I have noticed that my semen quality has changed just in the last 3 months, and it seems now much less in quantity and is quite watery and clear in color. I think the current problems are due to the finasteride, what do you think? — S.F., Rolling Hills, California
A: Finasteride, the active drug in Propecia, can change the quality of the semen, since it is decreasing the component of seminal fluid that is secreted by the prostate. You may want to consider having your sperm counts checked, as finasteride can lower this. If the symptoms are not bothering you, and your sperm counts are normal, it should be OK to continue the medication. If you were having difficulty conceiving, then I would stop the medication.
Posted byQ: What are the most common causes of hair loss in women other than genes?
A: The most common causes for localized hair loss in women are traction (due to tight braiding) and alopecia areata (an autoimmune disease that produces smooth round patches of hair loss).
Other than genetic (hereditary) thinning; generalized hair loss is most commonly caused by medications, anemia, and thyroid disease.
Posted byQ: I am interested in a hair transplant, but am turned off by the apparent side effects of follow up Propecia. Could herbs serve the purpose of Propecia? Regarding laser treatments, do they work on their own, or do you need drugs to supplement? Can laser damage in some cases, rather than benefit? It seems odd that laser therapy has been undertaken in Europe for 10 years, yet there are no published studies on the results. Might this be because it doesn’t work in the longer term? — D.D., Richmond, U.K.
A: Finasteride is the best medication. Herbs are not particularly effective for hair loss. You should consider trying finasteride.
If you are in the 2% group that has side effects with Propecia, just stop taking the medication. If you do not experience side effects, then there is no problem taking the medication long-term. Hair transplant surgery doesn’t prevent the progression of hair loss. That is why it is used in conjunction with medication.
Laser therapy can cause shedding initially (as can Propecia and Rogaine), but this means it is working. It does not cause actual hair loss. Your skepticism of the value of Laser therapy long term is one we have as well. Keep in mind, however, that while long-term studies are extremely important, they are very hard and costly to run and there is little incentive for companies to do this.
It is interesting that the FDA does not require longer term data on medications or devices that need to be used on a continued basis.
Posted byQ: Is it necessary to take medications before, during, or after the hair transplant? Will these medications affect pregnancy? — V.M., Fairfield, C.T.
A: It is not necessary to take any medication for a hair transplant other than the local anesthesia used during the procedure.
Although I would not have a hair transplant during pregnancy, the procedure will have no effect on future ones.
Posted byQ: I heard that there is a new drug on the market called Avodart for prostate enlargement which might help with hair loss as it blocks the conversion of testosterone to DHT better than Finasteride and is more effective than Propecia. Do you recommend taking it and if so what is the dose? — Y.B., Orlando, Florida
A: I am currently not recommending that patients take Dutasteride for hair loss, although it is more effective than Propecia, finasteride 1mg. (Dutasteride 0.5, the dose generally used for hair loss, seems to be slightly more effective than finasteride 5m in reversing miniaturization.)
The reasons that I am hesitant to prescribe it at present are outlined in the Hair Restoration Answers question, “Is Avodart Safe?”
In addition to the reasons that I listed in that response, I would also consider that: Dutasteride, unlike finasteride, decreases sperm counts, it can result in persistent decreased sex drive and the incidence is greater than with finasteride. Finally there are a significant number of alpha-type 1 receptors in brain, those affected by dutasteride, but not finasteride.
However, since Dutasteride is approved for older men with prostatic disease, using it for hair loss in this age group (usually in a lower dose) is reasonable.
Posted byQ: Our dermatologist originally suggested our son use the 5% Rogaine and he developed an allergic reaction to it. Allergy tests confirmed it was the propylene glycol causing the reaction. I understand that Rogaine foam has 5% minoxidil in it but no propylene glycol. Is that correct? — B.M., Lower East Side, N.Y.
A: In addition to minoxidil 5%, Rogaine Foam contains: butane, butylated hydroxytoluene, cetyl alcohol, citric acid, fragrance, glycerin, isobutane, lactic acid, polysorbate 60, propane, purified water, SD alcohol 40-B, stearyl alcohol — but no propylene glycol.
Posted byQ: What is the difference between Rogaine for men and Rogaine for women? — G.K., Hawthorne, N.Y.
A: Rogaine, the brand name of generic minoxidil, comes in formulations for both men and women. The men’s versions come in a 5% solution and a 5% foam while women’s products are the 5% foam and 2% solution. Of these, the strongest and most effective is the 5% men’s solution. This is due to the inclusion of propylene glycol, which is a vehicle that helps the active ingredient, minoxidil, to more readily penetrate the scalp. As the other products do not contain propylene glycol, they may be slightly less effective.
Instructions for use also differ on the label between the men’s and women’s products. All products (5% men’s solution, 5% men’s foam, 2% women’s solution) recommend twice daily use, except for the 5% women’s foam which recommends once daily application. In reality, a thorough once daily application seems to be nearly as effective as twice daily for all version of topical minoxidil.
While the 5% solution may be stronger, it is more irritating to the scalp and more difficult for some to tolerate. Some people have a sensitivity to the added propylene glycol and will experience redness, burning, itching, and irritation. If this occurs, patients should switch to the 5% foam or 2% solution. We also recommend that patients use enough of the medication when they apply to adequately cover the treatment area of the scalp. Often, this means using 2 or 3 capfuls of foam or 2-3 droppers full of the solution (2-3mL).
It is important to understand, that contrary to the more restrictive package indications, it works in all areas of the scalp where there is thinning. It is not only for use in the crown. Many patients find that evening application allows the full 4-6 hours of contact time necessary for absorption and that the product will dry overnight and no longer look greasy in the morning. Results can appear as early as 3-6 months, but we often advise using minoxidil for a full year before judging its efficacy. As the hair is always cycling and growing, the product will need to be continued daily for ongoing benefit.
Posted byQ: I have early thinning on the top of my scalp and I was told to use Propecia, but I heard that is was only for men. What do you think? — T.G., Staten Island, NY
A: Women can’t take Propecia during the child-bearing years because, if ingested, it can cause birth defects in male offspring.
In post-menopausal women, where we see the greatest frequency of hair loss, it doesn’t seem to be effective.
In pre-menopausal women who do not plan to become pregnant or who already have children, we are still cautious about using the medication, since there effectiveness has not been proven and its long-term safety in this population has not been tested.
Posted byQ: I am 35 years old and have been using Propecia for the last 3 years, waiting to save enough money for a hair transplant. I no longer feel comfortable using it due to side effects. Can hair transplantation still be effective even without continuing to take this drug afterwards? — Y.C., Matinecock, New York
A: Many people choose not to take Propecia or choose not to take it due to side effects and the surgical hair restoration is just as effective. The only difference is that medications can prevent further hair loss whereas surgery cannot.
Medications are not needed for the hair transplant to be successful or the transplanted hair to grow and be permanent.
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