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You responded to cefuroxime
with in three days it means the antibiotic was quite effective for you. In my opinion this antibiotic should be given full chance.
Throat ulcer etc are all part of tonsillopharyngitis.
Antiseptic and astringent
gargles help in relieving the pain.Vitamins
can be taken along with antibiotics but nothing can be promised. Vitamin C
help in healing the wound.
Hope for the best.