- 29. Use of any other over-the-counter or prescription medications within the 14 days or 5 half-lives (whichever is longer), prior to receiving the first dose of study medication. Acetaminophen (up to 2 g per day) for analgesia and hormone replacement therapy (eg, estrogen, thyroid) will be allowed. In addition, prescription drugs for hypertension or hypercholesterolemia, oral hypoglycemic drugs, or NSAIDs will be allowed; however, NSAIDS are not permitted within 24 hours of skin biopsies to reduce the risk of bleeding. Other medications may be approved following review by the Principal Investigator and the Amgen Medical Monitor. Written documentation of this review and Amgen acknowledgement is required for subject participation;