The FDA has approved darolutamide (Nubeqa – Bayer), an androgen receptor inhibitor, for oral treatment of nonmetastatic castration-resistant prostate cancer (nmCRPC). Darolutamide is the third androgen receptor inhibitor to be approved for this indication; apalutamide (Erleada) and enzalutamide (Xtandi), which are also approved for use in patients with metastatic castration-resistant prostate cancer (mCRPC), were approved earlier.

Over-the-counter products containing melatonin are widely used as sleep aids in children and adults.

Sexual complaints related to desire, arousal, orgasm and painful intercourse are common in women. Since the last Medical Letter article on this subject, some new information has become available.

View the Comparison Table: Some Oral/Transdermal Opioid Analgesics

Many prescriptions for eye drops call for instillation of 1-2 drops. But Medical Letter consultants in ophthalmology seem to agree that all eye drops should generally be given in doses of only one drop. The volume of a single drop can vary with the viscosity of the solution, the design of the dropper, and patient technique. The average volume of a drop is 35-50 microliters, but can be as high as 75 microliters. An eye brimming with fluid holds 30 microliters at best, so even one drop is often an overdose. A second either washes out the first or increases the possibility of systemic toxicity,...

A new CDC guideline for prescribing opioids for pain recently became available. Nonopioid drugs for pain were reviewed in a previous issue.