Recent heart or blood vessel problems. But plenty of men willingly pay more for Viagra because they like to use the name brand. Severe liver disease. Oral ED medicines might not work or might be dangerous if you also take any of the following: Nitrate medicines. The body takes longer to absorb it after a high-fat meal or alcohol. Shipping: Discreet, fast shipping is a must. When you and a clinician are choosing a dose, you should go for the lowest dose that you think will work.sildenafil citrate or viagra Savings, Coupons and Information. | SILDENAFIL (sil DEN a fil) treats erectile dysfunction (ED). It works by increasing blood flow to the penis, which . Lemonaid Sildenafil Best price for generic Viagra when bought in bulk: Optum Store Sildenafil If you are experiencing the symptoms of erectile dysfunction (ED), you may . How we vet brands and products. If you’re interested in buying Viagra online, five of the best.