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| Interactions: | Chloramphenicol
Adverse Effect: decreased antibacterial effectiveness Clinical Management: Monitor signs of antibacterial effectiveness.
Ethinyloestradiol
Adverse Effect: decreased contraceptive effectiveness Clinical Management: During concurrent use of penicillin and Ethinyloestradiol , an additional form of birth control should be used.
Gentamicin
Adverse Effect: loss of Gentamicin efficacy Clinical Management: Monitor patients for Gentamicin effectiveness.
Guar Gum
Adverse Effect: decreased penicillin effectiveness Clinical Management: Monitor decreased penicillin effectiveness.
Methotrexate
Adverse Effect: an increased risk of methotrexate toxicity Clinical Management: Avoid the concurrent use of methotrexate and penicillin if possible. If concomitant therapy is unavoidable, consider decreasing the methotrexate dose.
Neomycin
Adverse Effect: loss of Neomycin efficacy Clinical Management: Monitor patients for Neomycin effectiveness.
Netilmicin
Adverse Effect: loss of Netilmicin efficacy Clinical Management: Monitor patients for Netilmicin effectiveness.
Probenecid
Adverse Effect: increased penicillin serum levels
Sisomicin
Adverse Effect: loss of Sisomicin efficacy Clinical Management: Monitor patients for Sisomicin effectiveness.
Streptomycin
Adverse Effect: Loss of Streptomycin efficacy Clinical Management: Monitor patients for Streptomycin effectiveness.
Tetracycline
Concomitant tetracycline and penicillin therapy may in certain instances result in antagonism of penicillin antibacterial effects
Tobramycin
Adverse Effect: loss of Tobramycin efficacy Clinical Management: Monitor patients for Tobramycin effectiveness. |
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