If you are allergic to cobalt, you should avoid products containing cobalt, such as certain metal alloys, jewellery, and some dietary supplements, including vitamin B12
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If intrinsic factor is compromised, a much smaller percentage of this supplement is absorbed
I felt like I wasn't going to make it through the next hour before starting b12 and then had severe side effects for a few weeks or so
by cutting out food groups, you also eliminate or drastically lower your intake of certain essential vitamins and nutrients
See our research disclaimer and the deeper individual reviews of BPC-157 and TB-500 for full context