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Any sort of GI problem (including hormone imbalances like thyroid problems) may limit absorption
Some medications also reduce B12 absorption (Sobczyska-Malefora et al., 2021) among the main ones are: metformin, proton pump inhibitors (PPIs), such as omeprazole, lansoprazole and esomeprazole, and H2-receptor antagonists, such as ranitidine, cimetidine, famotidine and nizatidine
Everything not mentioned in the itinerary is included
Giving the injections was quite easy and the kit came with everything needed
US$ 23.82
US$ 29.97
US$ 23.85
