Psychological factors like stress, depression, or anxiety can also contribute. You’ll also need to fill out a medical questionnaire with answers about your medical history, current medications, and lifestyle habits. The mechanism of action for ED pills is simple: They inhibit the PDE5 enzyme which regulates the signals responsible for the smooth muscle tissue. Lemonaid doctors and nurse practitioners are licensed to prescribe in all the states where we operate. People with heart conditions should never take ED medications without consulting a doctor.Cost: Consultation prices vary based on the prescriber; $5 generic prescriptions Medical Consultation Required: Yes Medications Prescribed: Viagra, Cialis, sildenafil, tadalafil . Tadalafil is the active ingredient in a branded drug called Cialis. Tadalafil is approved by the FDA to treat erectile dysfunction. It’s available from Lemonaid in 5mg, 10mg and 20mg . Cialis is a medication approved by the Food and Drug Administration (FDA) often used to treat erectile dysfunction (ED) and benign prostatic hyperplasia (BPH) in those assigned .