dont know why pharmacies are asking for prescriptions for syringes?? Its actually "against the law" (i use that term loosely) for them to deny you access to clean and sanitary equipment to "do your business". if you cant get it from a pharmacy then should u just use and reuse needles off the street and quite possibly contract diseases? (you should tell them that).
Im not sure about the law in the US, but up here in Canada, if we go to a pharmacy and ask for syringes their first question is "what gauge/type do you need and how many?"... they cannot deny you access to clean equipment because you are atleast making an effort to "Stay clean" and not spread viruses/infections by reusing crap