Call your doctor for medical advice about side effects. Your doctor or other health care professional can recommend one for you based on these factors, other health conditions you have and any other medicines you take. These include chest pain and tightness, shortness of breath, extreme lightheadedness, and swelling in the hands and feet. Common side effects include headache, facial flushing, indigestion, and dizziness. Payment options: Consider how you’d like to pay.You deserve to put ED behind you and to enjoy your sex life. But you also deserve to do that safely. Lemonaid can prescribe sildenafil (generic Viagra), tadalafil (generic Cialis), and . Levitra can be taken as either a 5 mg or 10 mg oral tablet. It’s best taken about an hour or so before sex so that it has time to metabolize for better results once . Drug encyclopedia Levitra 20 mg tablet Medication name Uses How to use Side effects Precautions Drug interactions Overdose Notes Missed dose Storage Important .