Sildenafil usually should not be taken more than once every 24 hours. Dizziness, fainting spells, heart attack, or stroke may be experienced. However the dose is usually not more than 40 mg 3 times a day. The primary endpoint was time to limiting angina in the evaluable cohort. If this condition is not treated quickly, tissue damage and permanent loss of the ability to have an erection could result. Also tell them about any supplements you take. May make this condition worse.VIAGRA is supplied as blue, film-coated, rounded-diamond-shaped tablets containing sildenafil citrate equivalent to 25 mg, 50 mg, or mg of sildenafil. Tablets are debossed with PFIZER on one side and VGR25, VGR50 or VGR on the other to indicate the dosage strengths. Close. 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. CIALIS VIAGRA. Toll Free Phone: Toll Free Fax: 24 hours / 7 days a week. See what customers have to say about our products and services. Canadian Pharmacy Prices. Estring. 2mg. Starting from $ View Product. Flovent Inhaler. 50mcg. Starting from $ View Product. Synthroid. mg. Starting from .