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Frequent use of paracetamol can make asthma worse, researchers say. The
warning is significant, because most asthmatics shun aspirin and ibuprofen,
which are already known to cause attacks in some sufferers. Doctors from Guy’s,
King’s and St Thomas’ Medical School in London found a strong link between
paracetamol and worsening symptoms in 664 asthmatics. They suggest in
Thorax (vol 55, p 266) that paracetamol might reduce levels of the
lung-protecting antioxidant glutathione.