Share 'What's the best B12 injection manufacturers?'
Before injecting B12 in my body, I would like to know if there are brands/manufacturers you would recommend? I went to the pharmacy yesterday and the guy was unable to say anything about it.
I bet there are different ways to synthesize B12 and it comes inside different products. Or is it completely neutral? Are they all the same, or are there important differences?
I checked many…
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