Viagra: Brand/Generic: $ – $ 25 – 5 – mg: View Product: Cialis: Brand/Generic: $ – $ – 5 – 10 – 20 mg: View Product: Advair Diskus: Brand/Generic: $ – $ – – mg: View Product: Spiriva: Brand/Generic: $ – $ – 18 mcg.When taken at the correct time and paired with sexual stimulation, the erection lasts long enough for successful intercourse. Online ED consultations offer privacy, convenience, and affordability while allowing you to quickly get the medications you need—the same day, with some services. Prolonged erection: If an erection lasts longer than 4 hours a rare occurrence , seek immediate medical assistance. The combination of these medications and Viagra Sildenafil may add to the blood pressure-lowering effect of these medications. The combination of these medications and Viagra Sildenafil may add to the blood pressure-lowering effect of these medications. Medications other than the ones listed above may interact with Viagra Sildenafil. Blood pressure may suddenly drop to life-threatening levels if Viagra Sildenafil is taken with any nitrate-containing medication e.If you’re interested in buying Viagra online, five of the best options available are Hims, Roman, Lemonaid, Optum Store, and REX MD. Read on for full details on the process . Viagra. Advair. Flovent. Vagifem. Symbicort. Top Selling Prescription Drugs In Canada And Worldwide By Category. Heart Health. Livalo. Corlanor. Bystolic. Crestor. Zetia. Men’s . Generic Viagra (sildenafil): Starting at $24/month; Generic Cialis (tadalafil): Starting at $39/month; Generic Cialis Daily (tadalafil): Starting at $89/month; Branded Viagra: .If use of a nitrate-containing medication is considered medically necessary, you must wait 48 hours after the last dose of Viagra Sildenafil before taking a nitrate, and only under close medical supervision. Follow-up support: Make sure you can get the help you need if questions or concerns arise after ordering. Common side effects include headache, facial flushing, indigestion, and dizziness. It’s best to check your chosen provider’s site for more information. It may be difficult to remain firm despite wanting to have sex.