According to the FDA FAERS database, there have only been 97 reports of erectile dysfunction from 12-17 year-olds total.
31/97 (32%) from Accutane (isotretinoin)
18/97 (19%) from SSRI/SNRI medications
5/97 (5%) from Stratterra (atomoxetine), an NRI mediction
2/95 (2%) from Propecia (finasteride), which isn’t surprisingly low, given the age range
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The numbers themselves aren’t high, and this is far from a professional assessment, but the percentages for Accutane and SSRI/SNRIs are extremely high considering this report encompasses ALL reports of adverse reactions for the 12-17 age range.
A majority of the remainder of reports are from other classes of antidepressants and anti-psychotic medications.
I think it would be great to find someone with expertise to analyze the data in a way that can be presented to regulators.