Hello Sousouk and welcome to HCM
A long course of antibiotics disturbs the normal flora of the intestine and causes intestinal superinfections. These infections cause diarrhoea
and other symptoms related to the gastrointestinal tract like abdominal pain
Taking Bifalac for few days is fine. It will restrore your intestinal flora.
However, the mycosis on the lips will reqiure a topical anti-fungal ointment.
Maintaining good oral hygiene
and taking lot of fluids will help to prevent dehydration
Thanks and take care
Dr Shailja P Wahal