The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.

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Sulfa allergy is an adverse drug reaction, such as a rash, to sulfonamides, a class of drugs that includes antibiotics and other drugs. Allergies to sulfa drugs are common. Whether caused by a true ...