I don't know what you have in Portugal.
Metanx has B12, special B6, and methylfolate in it. All 3 you can buy over the counter... iherb.com ships to Portugal.
If Metanx is not available in your country, then buy the 3 separately online.
Don't you have doctors and chemists there you can ask these specific questions?
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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