Does myprodol caps has any side effect on a baby through breastfeeding mother? my wife has been taking myprodol for a day cause of toothache.

Mild sedation: is the expected side effect although not a lot gets into the breast milk with infrequent use. It is not recommended for regular use by breastfeeding mothers as it has not been fully tested. I do not think it places your baby at risk based on the description you provide.

Yes.: Yes. Better solution is to see a DDS for the tooth pain.