Supplements do not require a script however if it is medication I find no pros but all cons for sites to sell prescription medication without a prescription...there is a reason they (drugs) are regulated and who is authorized to dispense with a valid script...
You never know what is in those drugs. There was a show about a year or two ago that highlighted the dangers of obtaining meds this way. One supplier was making counterfeit drugs but they looked like the real ones BUT they were made out of highway paint, chalk, household chemicals, etc....just nasty stuff that does not belong IN the body...