The bitter liquid vomited after eating or drinking
Concerning the bitter-tasting liquid that may regurgitate into the mouth after drinking or eating but is a little quantity that does not fill the mouth or may come up the throat then flows back, does it invalidate Wudu’ (ablution)?
No, it neither breaks nor invalidates Wudu’.
May Allah grant us success. May peace and blessings be upon our Prophet, his family and Companions