Some hemorrhoid products (e.g., Preparation H Hemorrhoidal Ointment) include vasoconstrictors (e.g., phenylephrine) to decrease swelling. If the patient reads and follows all labeled directions for frequency of use, the possibility of absorbing the ingredient in suffic...
Some hemorrhoid products (e.g., Preparation H Hemorrhoidal Ointment) include vasoconstrictors such as phenylephrine to decrease swelling. The possibility of absorbing the ingredient in sufficient amounts to cause a measurable drop in blood pressure is remote when the products are used according to al...