14. Subjects taking the following medications: phosphodiesterase inhibitors, serotonergic medications (e.g. SSRI (selective serotonin reuptake inhibitor), SNRI, MAO (monoamine oxidase) inhibitors, bupropion, tricyclic antidepressants, St. John's Wort), valproic acid, codeine (CYP2D6 inhibition), tamoxifen, timolol, warfarin, steroids (inhaled or systemic due to reduced hypoglycemic effect), and subjects on other hormones (LHRH analogs etc).