My friend had said I might be B12 deficient & to get patches, but the price put me off. Then I had it confirmed by the doctor. I tole the doctor about the patches, she'd never heard of them..... but agreed with tablets most of it you pass so best not to bother.
These made me feel instantly better. Being inpatient I know some vitamins can take months to start working, not these! It really is incredible how fast they work. (I have since tried the cheap ones on amazon, don't bother they don't work like these).
They were also packaged how I requested, with out extra plastic packaging. (though the actual patches are in plastic which is a shame)