Not much - you have to print out the bill and bring it to customs. And AFAIK they can also ask for proof of payment, although they rarely ever do that.
But maybe, like DX has, an option to send parcels with an absolutely neutral sender might help. Just in case "Health Cabin" got flagged indeed, as DX is. (Not because of nic in their case. That has more to do with Nokla mobile phones and the like.)
I am sorry that I am confused. what does "Health Cabin" got flagged mean? all orders sent from us have no stickers saying Health cabin.