Cialis tadalafil : This ED medication works with the same principle as Viagra, but lasts up to 36 hours. However, some states require a live video consultation. Insurance: If you plan to use insurance, make sure the online provider accepts it. Yes, ED pills can cause side effects. Other warning signs of an unsafe online pharmacy include outdated medication, no customer service, or suspiciously low prices. Some platforms have a digital pharmacy that ships the medication to your home, while others send an electronic prescription to your local pharmacy. We also looked at additional services, such as access to digital pharmacies and home delivery options.Sign up for a Savings Card and, if eligible, you may save 50% on up to 12 prescriptions of brand-name VIAGRA per year.* * Terms and conditions apply. Check Your Pills Check . Sildenafil Citrate Coupons, Prices, and Savings Card Brand Names: Revatio, Viagra Sildenafil is used to treat male sexual function problems (impotence or erectile .