As per your history your friends nosebleeds
are not stopping in spite of cauterization
and packing.You should check whether his blood pressure is high.If so he should be started on antihypertensives.He should also get a blood routine and peripheral smear done to check for any abnormalities in his blood.If all these are normal a CT of the para-nasal sinuses
should be done to rule out any pathology there.For stopping the bleeding from the nose he can take T Trenexa (Tranexamic acid
) 500mg thrice daily for a week along with Injection Vitamin K 1 ampoule intramuscular daily for 3 days.This usually stops the bleeding however severe.