(phenazopyridine) treats pain, burning, increased urination, and increased urge to urinate. Includes side effects, interactions and indications.(Sildenafil) is an oral drug, a new generation extra-strength prescription medicine, that activates the natural blood flow, followed by hardness and expansion of your sexually excited penis for peak sexual performance, used to treat erectile dysfunction in men.21 Aug 2009. Yes, you can it over the counter in the pharmacy dept., and usually you will have to ask the pharmacist for it because they usually keep it behind the shelf.