Ortho Tri-Cyclen / Ortho-Cyclen® is indicated for the treatment of moderate acne vulgaris in females at least 15 years of age, who have no known contraindications to oral contraceptive therapy and have achieved menarche. How Dexamethasone Is Given: This medication may be given to you in many forms. In a pill form, it is available in a variety of tablet sizes. Erythromycin is an antibiotic used for the treatment of a number of bacterial infections. This includes respiratory tract infections, skin infections, chlamydia infections, pelvic inflammatory disease, and syphilis. Sildenafil oral tablet is a prescription medication used to treat erectile dysfunction (ED) and pulmonary arterial hypertension (PAH). Its available as generic drugs and as the brand-name drugs viagra from canada (used to treat ED) and Revatio (used to treat PAH). Learn about side effects, warnings, dosage, and more. Imiquimod (Aldara, Zyclara) is an ointment to treat outbreaks of HPV or genital warts. Learn about side effects, drug interactions, recommended dosages, and storage information. Read more about the prescription drug imiquimod (Aldara, Zyclara). Urinary retention may be acute or chronic. Treatment depends on the underlying cause. Urinary retention may occur after surgery or be a side effect of a medication.