Scopolamine (Transderm Scop) transdermal drug delivery system can be applied to the following skin site:

• A. Behind ear
• B. Chest
• C. Back
• D. Arm

Answer: (D)

The patch is designed to deliver medication steadily through the skin, so choosing a site with thin, smooth, relatively hairless skin maximizes absorption and minimizes irritation or detachment. Behind the ear fits this best: the skin there is thin and well perfused, and it’s a location less prone to rubbing from clothing or activities, allowing the patch to stay in place and release the drug consistently for about 72 hours. Sites like the chest, back, or arm tend to have thicker skin, more movement, and variability in absorption, making them less reliable for this transdermal system. For best results, apply to clean, dry skin behind the ear and follow the product’s usage instructions.