Hi I have sulfa based allergies, have been prescribed ibuprofen to substitute paracetemol, I am on peridnisone, erythomycin. I allergic reactions are severe with several cases of anaphylaxis in my history. I carry an epipen. I would to have a second opinion as I have the medical facility of my history and known allergies. Should I proceed in taking these drugs? I have experienced a fall and have injured my leg with severe swelling and pain, hence why I am being prescribed pain killers and antibiotics. My concern is will the combination of these drugs affect my allergies, I have not taken ibuprofen in the past to my knowledge, and knowing my history would like to proceed caustiously. Thank you