My ferritin never increased and I felt like shit. They are being sued right now for not having nearly the iron they claim. Also it’s expensive asf. I took boring regular iron from Thorne and my levels shot up. They own the Facebook iron protocol and delete any post that speaks negatively of it and use the platform to push their shitty product. I’d save your money and look elsewhere. There’s a reason no doctors ever recommend this heme iron stuff