Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns.
As per your complain Norfloxacin-Tinnidazole combination can be advised in case if you have
stomach infection caused by bacteria leading to loose motions..
Swelling and crackling of lips seems to be due to
allergic reaction to the antibiotic combination and you need to stop the intake of the antibiotics..
You can take anti allergics like
Benadryl or Levocetrizine to relieve the
allergy symptoms..
Do cool compresses over the lips..
You can apply a thick coat or petroleum jelly as it will help in healing the cracks as well as soften and lubricate the lips..
In case of pain
Advil can be taken..
Drink plenty of water to faster wean off the effect of antibiotics..
In case if the symptoms does not improve you can consult an Allergist and get evaluated and treatment can be planned according to the cause..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.