Is this Heme Iron Polypeptide 12mg Tablet as effective and genuine as other brands with the same composition?

I can't speak to authenticity claims about a specific brand, but here's what I can tell you: any tablet with the same salt, heme iron polypeptide, at the same 12mg strength, is generally expected to work comparably for correcting iron deficiency. For peace of mind about sourcing and genuineness, buying through a licensed pharmacy is your best safeguard. If you have any doubts about how it's working for you, your doctor can always recheck your iron levels to confirm it's doing its job.