Aside from the above hiccup, I come out ahead on cost if I go through my insurance rather than try to buy from India. There would also likely be some lag time involved that wouldn't have helped in that instance.

How do you safely source something like that?

You read reviews of suppliers. Lots of reviews. And you look up images of the genuine packaging from reputable manufacturers like Sun Pharma, and compare.

are you going to let that keep you up at night???