More harmful side effects tend to be uncommon or rare. Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. The information provided is for educational purposes only and is not intended to replace discussions with a healthcare provider. Headache is the most common, and stuffy nose and facial flushing are quite common too. Online pharmacies also may not fill short-term prescriptions, such as those for antibiotics.Online pharmacies allow you to fill prescription medications from the comfort of your home using a pharmacy site or an app rather than having to fill them in person. An online . CHOOSE BRAND-NAME VIAGRA. The original little blue pill prescribed by doctors for over 20 years. Clinically proven to treat men with erectile dysfunction (ED) Ongoing . Generic Viagra (sildenafil) is an alternative to the branded Viagra drug that can be used for treating erectile dysfunction (ED). It’s now sold by many manufacturers, including online.