Is it illegal to purchase an unscheduled prescription drug (e.g. sildenafil, promethazine etc.) from a supplier within the US without a prescription?

 The supplier would be in the US so there would be no importing. It looks like importing it wouldn't even be handled by the DEA just the FDA, and there have only been a handful of cases of prosecution. Even possession is legal and no international boundaries would be crossed. Is purchasing specifically illegal?

Please post me back with your thoughts.

Thanks in advance.



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