Hi All, During manufacturing process of the folic acid tablets the colors become dark &quote;orange&quote;, while the same raw material(active ingredient +inactive excipients) in previous process has normal color (yellow). I don't know w

Hi All, During manufacturing process of the folic acid tablets the colors become dark &quote;orange&quote;, while the same raw material(active ingredient +inactive excipients) in previous process has normal color (yellow). I don't know what is the cause may affect the product!! Any body has a clue about this phenomena?