While the research demonstrates a link between PDE-5 inhibitors and cardiac benefit, the authors stress that the results do not prove these drugs cause an improvement in heart health. How long does Cialis last? The drug works by increasing blood flow to the penis, thus aiding in achieving an erection. As with sildenafil, a high-fat meal or alcohol keep the body from absorbing it as quickly. One of these is PAH.Our medical team can give you a prescription for sildenafil 20mg. The Lemonaid Pharmacy can deliver it to you for $2/pill, including FREE delivery. Our medical team can prescribe it in a 20mg, 60mg or mg dose. To choose the best ED medicine for you, check out: Of All the Erectile Dysfunction Drugs, Which One’s the Best? Get started. Official answer. Eroxon is a topical gel that may be applied to the head of the penis immediately before sexual intercourse. Studies show that 65% of men who used it achieved an erection within 10 minutes and maintained it long enough to have sex. Eroxon was approved on 13 June under the De Novo medical devices classification. Yes. Cialis is approved by the FDA to treat erectile dysfunction (ED). Our medical team can prescribe Cialis 5mg, 10mg, and 20mg. The starting dose we generally recommend is 10mg. Tadalafil is the name for the active chemical ingredient in Cialis. PDE-5 inhibitors is the name of the group of medicines.