Problem analysis: high rate of allergy. It may affect the synthesis of vitamin B group in the intestine. There is a history of penicillin allergy is contraindicated, no history of allergy need to use penicillin G potassium (sodium) to do an allergy test before use, positive people are contraindicated.

Rehabilitation guidance: long-acting penicillin is used to prevent streptococcal infections in rheumatic diseases, and can also be used for the treatment of mild and moderate infections caused by bacteria sensitive to penicillin G, or for the prevention of infections (such as the prevention of streptococcal infections in patients with rheumatic diseases). It is not a substitute for penicillin G in the treatment of severe acute infections.

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