Common side effects include headache, facial flushing, indigestion, and dizziness. You should also call your insurance company to see if they cover erectile dysfunction medications. Lemonaid can prescribe sildenafil generic Viagra , tadalafil generic Cialis , and vardenafil generic Levitra. Yes, ED pills can cause side effects. These PDE5 inhibitors may cause headache, flushing, drop in blood pressure, or other adverse effects. Refills: See if you can set up automatic refills or order as needed. Need help locating one?Takeaway Galina Trushina / Getty Images Levitra (vardenafil hydrochloride) is an oral medication taken to treat erectile dysfunction (ED). It’s in the same class of drugs as other popular ED. It’s no longer sold under the brand name Levitra, but it’s available as generic tablets and orally disintegrating tablets (ODTs). Common side effects of vardenafil include headache, flushing, and stuffy nose. Cialis, tadalafil, Viagra, sildenafil, Stendra, Levitra, vardenafil: Yes: GoodRx Best Low Cost: Starting at $ per dose; $19 to $59 for consultations: Yes: Viagra, Cialis, Levitra: Yes: Blink Health Fastest Delivery: $10 for initial consult and first month of medication; $ per month + prescription cost after that: Yes: Sildenafil.