Just visit a participating pharmacy. Kidney disease that needs to be treated with dialysis. Other warning signs of an unsafe online pharmacy include outdated medication, no customer service, or suspiciously low prices. You can take it in a small dose daily or in a larger dose as needed. People with heart conditions should never take ED medications without consulting a doctor. Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure.DRUG_DESCRPTION Compare DRUG_NAME prices and find coupons that could save you up to 80% instantly at pharmacies near you such as CVS, Walgreens, Walmart, and . Viagra Dosage and Use Tips for First-Timers. Viagra dosage for erectile dysfunction (ED) is usually milligrams (mg), but those over 65 may start at 25 mg. Your doctor will also need to. Depending on your symptoms and needs, you may be prescribed Viagra, sildenafil, Cialis, tadalafil, Stendra, paroxetine, or a combination of tadalafil and sildenafil, available as mints or pills. Prices range from $3 to $ per dose or $82 to $ for a monthly supply, depending on the medication.