| Anaphylaxis has been reported as a rare complication of Betaseron
® use. Other allergic reactions attributed to the use of
Betaseron ® have included dyspnea (difficulty breathing),
bronchospasm, tongue edema (swollen tongue), skin rash and urticaria
(hives).
Some patients taking Betaseron have had severe allergic reactions
leading to difficulty breathing and swallowing; these reactions can
happen quickly.
Allergic reactions can happen after your first dose or may not happen
until after you have taken Betaseron many times.
Less severe allergic reactions such as rash, itching, skin bumps
or swelling of the mouth and tongue can also happen.
If you think you are having an allergic reaction, stop using Betaseron
immediately and call your doctor.
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