Specialties When your doctor gives you a prescription, don't just take it to the closest pharmacy-- Take it to the best one: Wightman Pharmacy. For more than 119 years, it has been the most trusted pharmacy in Waterloo, IL. Family-owned and -operated, Wightman Pharmacy is more than a place to have your prescriptions filled. Their knowledgeable, caring pharmacy technicians take an active role your health. In addition to answering questions, they provide information about your prescriptions, recommend over-the-counter medicine, and order diabetic equipment and other medical supplies. Wightman Pharmacy has evolved since it opened in 1897.