Before you begin using Transderm-V, it's important that you tell your doctor about:, All the medications you take, Your allergies, Your health history and current health problems, including stomach, intestinal, or bladder obstructions; benign prostatic hyperplasia; metabolic, liver, or kidney problems; vision problems; or seizures, Your pregnancy or breastfeeding status, Do not consume alcohol while using Transderm-V., Remove Transderm-V before you have medical scans., Do not drive, operate machinery, or participate in any other activity that requires concentration until you know how Transderm-V affects you., Elderly patients may be more sensitive to Transderm-V and should consult a doctor before using. All the medications you take, Your allergies, Your health history and current health problems, including stomach, intestinal, or bladder obstructions; benign prostatic hyperplasia; metabolic, liver, or kidney problems; vision problems; or seizures, Your pregnancy or breastfeeding status