Other reported effects include hair thinning, vaginal dryness or bleeding, myalgia, arthralgia, and bone fractures. Abnormalities in liver enzyme values, thromboembolism, and increases in total cholesterol. Very rare cases of erythema multiforme, Stevens-Johnson syndrome, and allergic reactions (including angioedema, urticaria, and anaphylaxis) have occurred.
Reduction in bone mineral density can occur during use of Letrozole. Patients with or at risk of osteoporosis should therefore have their bone density assessed at the start of therapy and at regular intervals thereafter.
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