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Med Rx.

Benzathine Benzylpenicillin interactions

Checked as Benzylpenicillin in this data source.

Full monograph for Benzathine BenzylpenicillinCheck it against another medicine

Medicines

56 documented

Medicines documented to interact with Benzathine Benzylpenicillin, worst severity first.
MedicineSeverityMechanismEffectSources
Methotrexatematched approximatelyMajorExcretionConcomitant use of large doses of penicillins may elevate serum methotrexate concentrations. The mechanism may involve competitive inhibition of renal tubular…11 sources — open the full entry
Beclomethasone Dipropionate + Chloramphenicol + Clotrimazole + Lidocainematched approximatelyModerateAntagonismChloramphenicol may inhibit the bactericidal effect of penicillins when used to treat bacterial meningitis and staphylococcal endocarditis. Chloramphenicol…4 sources — open the full entry
Chloramphenicol (Oral)matched approximatelyModerateAntagonismChloramphenicol may inhibit the bactericidal effect of penicillins when used to treat bacterial meningitis and staphylococcal endocarditis. Chloramphenicol…4 sources — open the full entry
Chloramphenicol + Lidocaine Hydrochloridematched approximatelyModerateAntagonismChloramphenicol may inhibit the bactericidal effect of penicillins when used to treat bacterial meningitis and staphylococcal endocarditis. Chloramphenicol…4 sources — open the full entry
Cyproterone Acetate + Ethinyl Estradiolmatched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Dexamethasone + Chloramphenicolmatched approximatelyModerateAntagonismChloramphenicol may inhibit the bactericidal effect of penicillins when used to treat bacterial meningitis and staphylococcal endocarditis. Chloramphenicol…4 sources — open the full entry
Dienogest + Estradiol Valeratematched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Doxycycline Hydrochloridematched approximatelyModerateAntagonismTetracyclines may reduce the effect of penicillins by inhibiting cellular protein synthesis which is necessary for cell wall synthesis inhibition by…8 sources — open the full entry
Drospirenone + Estradiolmatched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Drospirenone + Ethinyl Estradiol0.02 mg0.03 mgmatched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Drospirenone + Ethinyl Estradiol + Levomefolatematched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Entecavir Monohydratematched approximatelyModerateExcretionCoadministration of entecavir with another drug that is also eliminated by active tubular secretion may result in increased plasma concentrations of one or…2 sources — open the full entry
Estradiolbasevaginal creammatched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Estradiol + Dydrogesteronematched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Estradiol Hemihydrate + Progesterone Micronizedmatched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Estradiol Valeratematched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Ethinyl Estradiol + Desogestrel0.02 mg0.03 mgmatched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Ethinyl Estradiol + Gestodenematched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Ethinyl Estradiol + Levonorgestrel + Ferrous Fumaratematched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Ethinyl Estradiol + Lynestrenol0.0375 mg0.05 mgmatched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Minocycline Hydrochloridematched approximatelyModerateAntagonismTetracyclines may reduce the effect of penicillins by inhibiting cellular protein synthesis which is necessary for cell wall synthesis inhibition by…8 sources — open the full entry
Mycophenolate Mofetilmatched approximatelyModerateAbsorptionTheoretically, drugs that alter the gastrointestinal flora (e.g., antibiotics) may reduce the oral bioavailability of mycophenolic acid products. Some…3 sources — open the full entry
Mycophenolic acidmatched approximatelyModerateAbsorptionTheoretically, drugs that alter the gastrointestinal flora (e.g., antibiotics) may reduce the oral bioavailability of mycophenolic acid products. Some…3 sources — open the full entry
Norgestrel + Ethinyl Estradiol + Ferrous Fumaratematched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Oxytetracyclinematched approximatelyModerateAntagonismTetracyclines may reduce the effect of penicillins by inhibiting cellular protein synthesis which is necessary for cell wall synthesis inhibition by…8 sources — open the full entry
Oxytetracycline + Polymixin B Sulphatematched approximatelyModerateAntagonismTetracyclines may reduce the effect of penicillins by inhibiting cellular protein synthesis which is necessary for cell wall synthesis inhibition by…8 sources — open the full entry
Pemetrexedmatched approximatelyModerateExcretionCoadministration with drugs that are eliminated by active tubular secretion may delay and/or decrease the clearance of pemetrexed. The mechanism is competitive…1 sources — open the full entry
Relugolix + Estradiol + Norethindronematched approximatelyModerateAntagonismRECOMMENDED: The effectiveness of estrogen-containing oral contraceptives may be impaired by concomitant treatment with antimicrobial agents. Most…38 sources — open the full entry
Tetracycline Hydrochloridematched approximatelyModerateAntagonismTetracyclines may reduce the effect of penicillins by inhibiting cellular protein synthesis which is necessary for cell wall synthesis inhibition by…8 sources — open the full entry
Warfarin Sodiummatched approximatelyModerateSynergyPenicillins may occasionally potentiate the risk of bleeding in patients treated with oral anticoagulants. The exact mechanism of interaction is unknown but…54 sources — open the full entry
Azithromycin DihydratebaseOphthalmicmatched approximatelyMinorOthersAlthough some in vitro data indicate synergism between macrolide antibiotics and penicillins, other in vitro data indicate antagonism. When these drugs are…3 sources — open the full entry
Clarithromycinmatched approximatelyMinorOthersAlthough some in vitro data indicate synergism between macrolide antibiotics and penicillins, other in vitro data indicate antagonism. When these drugs are…3 sources — open the full entry
ErythromycinLotionOralmatched approximatelyMinorOthersAlthough some in vitro data indicate synergism between macrolide antibiotics and penicillins, other in vitro data indicate antagonism. When these drugs are…3 sources — open the full entry
Esomeprazole + Amoxicillin + Clarithromycinmatched approximatelyMinorOthersAlthough some in vitro data indicate synergism between macrolide antibiotics and penicillins, other in vitro data indicate antagonism. When these drugs are…3 sources — open the full entry
Lansoprazole + Amoxicillin + Clarithromycinmatched approximatelyMinorOthersAlthough some in vitro data indicate synergism between macrolide antibiotics and penicillins, other in vitro data indicate antagonism. When these drugs are…3 sources — open the full entry
Rabeprazole + Amoxicillin + Clarithromycinmatched approximatelyMinorOthersAlthough some in vitro data indicate synergism between macrolide antibiotics and penicillins, other in vitro data indicate antagonism. When these drugs are…3 sources — open the full entry
Vonoprazan + Amoxicillin + Clarithromycinmatched approximatelyMinorOthersAlthough some in vitro data indicate synergism between macrolide antibiotics and penicillins, other in vitro data indicate antagonism. When these drugs are…3 sources — open the full entry

Conditions

Conditions in which Benzathine Benzylpenicillin needs care, as documented in this source.

Therapeutic duplication

Drug classes that overlap with Benzathine Benzylpenicillin, so taking both doubles up the same effect. This source publishes no per-row citations for duplication.