Do your erectile problems occur only sometimes, often or all of the time? Lifestyle and home remedies For many people, erectile dysfunction is caused or worsened by lifestyle choices. Here are some key factors to consider when deciding: Pricing: Know how much your monthly supply will cost with shipping and tax. What to expect from your doctor Your doctor is likely to ask you a number of questions. As with sildenafil, a high-fat meal or alcohol keep the body from absorbing it as quickly.sildenafil (Viagra) tadalafil (Cialis) vardenafil (Levitra, Staxyn) Caution: Do not use these ED medications if you take nitrates, such as nitroglycerin or a similar medicine, for chest . Vardenafil (Levitra, Staxyn) Avanafil (Stendra) All four medications enhance the effects of nitric oxide — a natural chemical your body produces that relaxes muscles . the dosage of the tablets (typically around 10 mg) your insurance coverage the pharmacy where you buy it coupons or discount programs you use .