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Abciximab
The therapeutic efficacy of Abciximab can be decreased when used in combination with Levonorgestrel.
Acarbose
The therapeutic efficacy of Acarbose can be decreased when used in combination with Levonorgestrel.
Acenocoumarol
Levonorgestrel may decrease the anticoagulant activities of Acenocoumarol.
Acetohexamide
The therapeutic efficacy of Acetohexamide can be decreased when used in combination with Levonorgestrel.
Acetyl Sulfisoxazole
The metabolism of Levonorgestrel can be decreased when combined with Acetyl sulfisoxazole.
Acitretin
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Acitretin.
Adapalene
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Adapalene.
Alitretinoin
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Alitretinoin.
Alogliptin
The therapeutic efficacy of Alogliptin can be decreased when used in combination with Levonorgestrel.
Amiodarone
The metabolism of Levonorgestrel can be decreased when combined with Amiodarone.
Amobarbital
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Amobarbital.
Ancrod
The therapeutic efficacy of Ancrod can be decreased when used in combination with Levonorgestrel.
Antithrombin III
The therapeutic efficacy of Antithrombin III human can be decreased when used in combination with Levonorgestrel.
Antithrombin III, Human
The therapeutic efficacy of Antithrombin III human can be decreased when used in combination with Levonorgestrel.
Apalutamide
The serum concentration of Levonorgestrel can be decreased when it is combined with Apalutamide.
Apixaban
The therapeutic efficacy of Apixaban can be decreased when used in combination with Levonorgestrel.
Aprepitant
The serum concentration of Levonorgestrel can be decreased when it is combined with Aprepitant.
Ardeparin
The therapeutic efficacy of Ardeparin can be decreased when used in combination with Levonorgestrel.
Argatroban
The therapeutic efficacy of Argatroban can be decreased when used in combination with Levonorgestrel.
Argatroban Anhydrous
The therapeutic efficacy of Argatroban can be decreased when used in combination with Levonorgestrel.
Artemether
The serum concentration of Levonorgestrel can be decreased when it is combined with Artemether.
Asunaprevir
The serum concentration of Levonorgestrel can be decreased when it is combined with Asunaprevir.
Atazanavir
The serum concentration of Levonorgestrel can be increased when it is combined with Atazanavir.
Atomoxetine
The metabolism of Levonorgestrel can be decreased when combined with Atomoxetine.
Barbexaclone
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Barbexaclone.
Barbital
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Barbital.
Becaplermin
The therapeutic efficacy of Becaplermin can be decreased when used in combination with Levonorgestrel.
Bexarotene
The serum concentration of Levonorgestrel can be decreased when it is combined with Bexarotene.
Bivalirudin
The therapeutic efficacy of Bivalirudin can be decreased when used in combination with Levonorgestrel.
Boceprevir
The serum concentration of Levonorgestrel can be increased when it is combined with Boceprevir.
Bortezomib
The metabolism of Levonorgestrel can be decreased when combined with Bortezomib.
Bosentan
The serum concentration of Levonorgestrel can be decreased when it is combined with Bosentan.
Bosentan Anhydrous
The serum concentration of Levonorgestrel can be decreased when it is combined with Bosentan.
C1 esterase inhibitor (human)
Levonorgestrel may increase the thrombogenic activities of Human C1-esterase inhibitor.
C1 esterase inhibitor (recombinant)
Levonorgestrel may increase the thrombogenic activities of Conestat alfa.
Canagliflozin
The therapeutic efficacy of Canagliflozin can be decreased when used in combination with Levonorgestrel.
Canagliflozin Anhydrous
The therapeutic efficacy of Canagliflozin can be decreased when used in combination with Levonorgestrel.
Carbamazepine
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Carbamazepine.
Ceritinib
The serum concentration of Levonorgestrel can be increased when it is combined with Ceritinib.
Certoparin
The therapeutic efficacy of Certoparin can be decreased when used in combination with Levonorgestrel.
Chlorpropamide
The therapeutic efficacy of Chlorpropamide can be decreased when used in combination with Levonorgestrel.
Cholestyramine Resin
The serum concentration of Levonorgestrel can be decreased when it is combined with Cholestyramine.
Citric Acid
The therapeutic efficacy of Citric Acid can be decreased when used in combination with Levonorgestrel.
Citric Acid, Anhydrous
The therapeutic efficacy of Citric Acid can be decreased when used in combination with Levonorgestrel.
Clarithromycin
The metabolism of Levonorgestrel can be decreased when combined with Clarithromycin.
Clemastine
The metabolism of Levonorgestrel can be decreased when combined with Clemastine.
Clobazam
The serum concentration of Levonorgestrel can be decreased when it is combined with Clobazam.
Clotrimazole
The metabolism of Levonorgestrel can be decreased when combined with Clotrimazole.
Cobicistat
The serum concentration of Levonorgestrel can be increased when it is combined with Cobicistat.
Colesevelam
The serum concentration of Levonorgestrel can be decreased when it is combined with Colesevelam.
Colestipol
The serum concentration of Levonorgestrel can be decreased when it is combined with Colestipol.
Conivaptan
The serum concentration of Conivaptan can be increased when it is combined with Levonorgestrel.
Crizotinib
The metabolism of Levonorgestrel can be decreased when combined with Crizotinib.
Curcumin
The metabolism of Levonorgestrel can be decreased when combined with Curcumin.
Cyclosporine
The metabolism of Levonorgestrel can be decreased when combined with Cyclosporine.
Dabigatran Etexilate
The therapeutic efficacy of Dabigatran etexilate can be decreased when used in combination with Levonorgestrel.
Dabrafenib
The serum concentration of Levonorgestrel can be decreased when it is combined with Dabrafenib.
Dalteparin
The therapeutic efficacy of Dalteparin can be decreased when used in combination with Levonorgestrel.
Danaparoid
The therapeutic efficacy of Danaparoid can be decreased when used in combination with Levonorgestrel.
Darunavir
The serum concentration of Levonorgestrel can be decreased when it is combined with Darunavir.
Dasatinib
The serum concentration of Levonorgestrel can be increased when it is combined with Dasatinib.
Dasatinib Anhydrous
The serum concentration of Levonorgestrel can be increased when it is combined with Dasatinib.
Deferasirox
The serum concentration of Levonorgestrel can be decreased when it is combined with Deferasirox.
Delavirdine
The metabolism of Levonorgestrel can be decreased when combined with Delavirdine.
Desirudin
The therapeutic efficacy of Desirudin can be decreased when used in combination with Levonorgestrel.
Dextran
The therapeutic efficacy of Dextran can be decreased when used in combination with Levonorgestrel.
Dicumarol
Levonorgestrel may decrease the anticoagulant activities of Dicoumarol.
Dihydroergotamine
The metabolism of Levonorgestrel can be decreased when combined with Dihydroergotamine.
Diltiazem
The metabolism of Levonorgestrel can be decreased when combined with Diltiazem.
Doxycycline
The metabolism of Levonorgestrel can be decreased when combined with Doxycycline.
Doxycycline Anhydrous
The metabolism of Levonorgestrel can be decreased when combined with Doxycycline.
Dronedarone
The metabolism of Levonorgestrel can be decreased when combined with Dronedarone.
Dulaglutide
The therapeutic efficacy of Dulaglutide can be decreased when used in combination with Levonorgestrel.
Edetic Acid
The therapeutic efficacy of Edetic Acid can be decreased when used in combination with Levonorgestrel.
Edoxaban
The therapeutic efficacy of Edoxaban can be decreased when used in combination with Levonorgestrel.
Efavirenz
The serum concentration of Levonorgestrel can be decreased when it is combined with Efavirenz.
Empagliflozin
The therapeutic efficacy of Empagliflozin can be decreased when used in combination with Levonorgestrel.
Enoxaparin
The therapeutic efficacy of Enoxaparin can be decreased when used in combination with Levonorgestrel.
Enoxaparin sodium
The therapeutic efficacy of Enoxaparin can be decreased when used in combination with Levonorgestrel.
Enzalutamide
The serum concentration of Levonorgestrel can be decreased when it is combined with Enzalutamide.
Erythromycin
The metabolism of Levonorgestrel can be decreased when combined with Erythromycin.
Eslicarbazepine Acetate
The serum concentration of Levonorgestrel can be decreased when it is combined with Eslicarbazepine acetate.
Ethylenediaminetetraacetate
The therapeutic efficacy of Edetic Acid can be decreased when used in combination with Levonorgestrel.
Exenatide
The serum concentration of Levonorgestrel can be decreased when it is combined with Exenatide.
Felbamate
The serum concentration of Levonorgestrel can be decreased when it is combined with Felbamate.
Ferulic Acid
The therapeutic efficacy of Ferulic acid can be decreased when used in combination with Levonorgestrel.
Flibanserin
The serum concentration of Flibanserin can be increased when it is combined with Levonorgestrel.
Fluconazole
The metabolism of Levonorgestrel can be decreased when combined with Fluconazole.
Fluindione
Levonorgestrel may decrease the anticoagulant activities of Fluindione.
Fluvoxamine
The metabolism of Levonorgestrel can be decreased when combined with Fluvoxamine.
Fondaparinux sodium
The therapeutic efficacy of Fondaparinux sodium can be decreased when used in combination with Levonorgestrel.
Fosamprenavir
The serum concentration of the active metabolites of Fosamprenavir can be reduced when Fosamprenavir is used in combination with Levonorgestrel resulting in a loss in efficacy.
Fosaprepitant
The serum concentration of Levonorgestrel can be decreased when it is combined with Fosaprepitant.
Fosphenytoin
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Fosphenytoin.
Fusidate
The serum concentration of Levonorgestrel can be increased when it is combined with Fusidic Acid.
Fusidic Acid
The serum concentration of Levonorgestrel can be increased when it is combined with Fusidic Acid.
Glibornuride
The therapeutic efficacy of Glibornuride can be decreased when used in combination with Levonorgestrel.
Gliclazide
The therapeutic efficacy of Gliclazide can be decreased when used in combination with Levonorgestrel.
Glimepiride
The therapeutic efficacy of Glimepiride can be decreased when used in combination with Levonorgestrel.
Glipizide
The therapeutic efficacy of Glipizide can be decreased when used in combination with Levonorgestrel.
Gliquidone
The therapeutic efficacy of Gliquidone can be decreased when used in combination with Levonorgestrel.
Glyburide
The therapeutic efficacy of Glyburide can be decreased when used in combination with Levonorgestrel.
Griseofulvin
The serum concentration of Levonorgestrel can be decreased when it is combined with Griseofulvin.
Griseofulvin microsize
The serum concentration of Levonorgestrel can be decreased when it is combined with Griseofulvin.
Heparin
The therapeutic efficacy of Heparin can be decreased when used in combination with Levonorgestrel.
Hexobarbital
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Hexobarbital.
Hypoxis hemerocallidea root extract
The serum concentration of Levonorgestrel can be decreased when it is combined with St. John's Wort.
Idelalisib
The metabolism of Levonorgestrel can be decreased when combined with Idelalisib.
Imatinib
The metabolism of Levonorgestrel can be decreased when combined with Imatinib.
Indinavir
The metabolism of Levonorgestrel can be decreased when combined with Indinavir.
INDINAVIR ANHYDROUS
The metabolism of Levonorgestrel can be decreased when combined with Indinavir.
Insulin Detemir
The therapeutic efficacy of Insulin Detemir can be decreased when used in combination with Levonorgestrel.
Insulin Glargine
The therapeutic efficacy of Insulin Glargine can be decreased when used in combination with Levonorgestrel.
insulin human, rDNA origin
The therapeutic efficacy of Insulin Human can be decreased when used in combination with Levonorgestrel.
Insulin Lispro
The therapeutic efficacy of Insulin Lispro can be decreased when used in combination with Levonorgestrel.
Insulin, Aspart Protamine, Human
The therapeutic efficacy of Insulin Aspart can be decreased when used in combination with Levonorgestrel.
Insulin, Aspart, Human
The therapeutic efficacy of Insulin Aspart can be decreased when used in combination with Levonorgestrel.
Insulin, Glulisine, Human
The therapeutic efficacy of Insulin Glulisine can be decreased when used in combination with Levonorgestrel.
Insulin, Pork
The therapeutic efficacy of Insulin Pork can be decreased when used in combination with Levonorgestrel.
Insulin, Protamine Lispro, Human
The therapeutic efficacy of Insulin Lispro can be decreased when used in combination with Levonorgestrel.
Insulin, Regular, Pork
The therapeutic efficacy of Insulin Pork can be decreased when used in combination with Levonorgestrel.
Isavuconazole
The serum concentration of Levonorgestrel can be increased when it is combined with Isavuconazole.
Isavuconazonium
The metabolism of Levonorgestrel can be decreased when combined with Isavuconazonium.
Isotretinoin
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Isotretinoin.
Isradipine
The metabolism of Levonorgestrel can be decreased when combined with Isradipine.
Itraconazole
The metabolism of Levonorgestrel can be decreased when combined with Itraconazole.
Ivacaftor
The serum concentration of Levonorgestrel can be increased when it is combined with Ivacaftor.
Ketoconazole
The metabolism of Levonorgestrel can be decreased when combined with Ketoconazole.
Lamotrigine
Levonorgestrel may increase the excretion rate of Lamotrigine which could result in a lower serum level and potentially a reduction in efficacy.
Lepirudin
The therapeutic efficacy of Lepirudin can be decreased when used in combination with Levonorgestrel.
Linagliptin
The therapeutic efficacy of Linagliptin can be decreased when used in combination with Levonorgestrel.
Liraglutide
The therapeutic efficacy of Liraglutide can be decreased when used in combination with Levonorgestrel.
Lopinavir
The serum concentration of Levonorgestrel can be decreased when it is combined with Lopinavir.
Lovastatin
The metabolism of Levonorgestrel can be decreased when combined with Lovastatin.
Luliconazole
The serum concentration of Levonorgestrel can be increased when it is combined with Luliconazole.
Lumacaftor
The serum concentration of Levonorgestrel can be decreased when it is combined with Lumacaftor.
Mephobarbital
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Methylphenobarbital.
Metformin
The therapeutic efficacy of Metformin can be decreased when used in combination with Levonorgestrel.
Methohexital
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Methohexital.
Metreleptin
The serum concentration of Levonorgestrel can be decreased when it is combined with Metreleptin.
Mifepristone
The serum concentration of Levonorgestrel can be increased when it is combined with Mifepristone.
Miglitol
The therapeutic efficacy of Miglitol can be decreased when used in combination with Levonorgestrel.
Miglustat
The therapeutic efficacy of Miglustat can be decreased when used in combination with Levonorgestrel.
Mitotane
The serum concentration of Levonorgestrel can be decreased when it is combined with Mitotane.
MYCOPHENOLATE
The serum concentration of Levonorgestrel can be decreased when it is combined with Mycophenolic acid.
Mycophenolic Acid
The serum concentration of Levonorgestrel can be decreased when it is combined with Mycophenolic acid.
Nadroparin
The therapeutic efficacy of Nadroparin can be decreased when used in combination with Levonorgestrel.
Nateglinide
The therapeutic efficacy of Nateglinide can be decreased when used in combination with Levonorgestrel.
Nefazodone
The metabolism of Levonorgestrel can be decreased when combined with Nefazodone.
Nelfinavir
The serum concentration of Levonorgestrel can be decreased when it is combined with Nelfinavir.
Netupitant
The serum concentration of Levonorgestrel can be increased when it is combined with Netupitant.
Nevirapine
The serum concentration of Levonorgestrel can be decreased when it is combined with Nevirapine.
Nilotinib
The metabolism of Levonorgestrel can be decreased when combined with Nilotinib.
Olaparib
The metabolism of Levonorgestrel can be decreased when combined with Olaparib.
Osimertinib
The serum concentration of Levonorgestrel can be increased when it is combined with Osimertinib.
Oxcarbazepine
The serum concentration of Levonorgestrel can be decreased when it is combined with Oxcarbazepine.
Palbociclib
The serum concentration of Levonorgestrel can be increased when it is combined with Palbociclib.
Pentaerythritol Tetranitrate
The therapeutic efficacy of Pentaerythritol Tetranitrate can be decreased when used in combination with Levonorgestrel.
Pentobarbital
The metabolism of Levonorgestrel can be increased when combined with Pentobarbital.
Pentosan Polysulfate
The therapeutic efficacy of Pentosan Polysulfate can be decreased when used in combination with Levonorgestrel.
Perampanel
The serum concentration of Levonorgestrel can be decreased when it is combined with Perampanel.
Phenformin
The therapeutic efficacy of Phenformin can be decreased when used in combination with Levonorgestrel.
Phenindione
Levonorgestrel may decrease the anticoagulant activities of Phenindione.
Phenobarbital
The metabolism of Levonorgestrel can be increased when combined with Phenobarbital.
Phenprocoumon
Levonorgestrel may decrease the anticoagulant activities of Phenprocoumon.
Phenytoin
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Phenytoin.
Pioglitazone
The therapeutic efficacy of Pioglitazone can be decreased when used in combination with Levonorgestrel.
Posaconazole
The metabolism of Levonorgestrel can be decreased when combined with Posaconazole.
Potassium Citrate
The therapeutic efficacy of Potassium Citrate can be decreased when used in combination with Levonorgestrel.
Pramlintide
The therapeutic efficacy of Pramlintide can be decreased when used in combination with Levonorgestrel.
Primidone
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Primidone.
protein C, human
The therapeutic efficacy of Protein C can be decreased when used in combination with Levonorgestrel.
protein S, human
The therapeutic efficacy of Protein S human can be decreased when used in combination with Levonorgestrel.
Protocatechualdehyde
The therapeutic efficacy of Protocatechualdehyde can be decreased when used in combination with Levonorgestrel.
Ranolazine
The metabolism of Levonorgestrel can be decreased when combined with Ranolazine.
Regular Insulin, Human
The therapeutic efficacy of Insulin Human can be decreased when used in combination with Levonorgestrel.
Repaglinide
The therapeutic efficacy of Repaglinide can be decreased when used in combination with Levonorgestrel.
Reviparin
The therapeutic efficacy of Reviparin can be decreased when used in combination with Levonorgestrel.
Reviparin sodium
The therapeutic efficacy of Reviparin can be decreased when used in combination with Levonorgestrel.
Rifabutin
The metabolism of Levonorgestrel can be increased when combined with Rifabutin.
Rifampin
The metabolism of Levonorgestrel can be increased when combined with Rifampicin.
Rifapentine
The metabolism of Levonorgestrel can be increased when combined with Rifapentine.
Rifaximin
The serum concentration of Levonorgestrel can be decreased when it is combined with Rifaximin.
Rivaroxaban
The therapeutic efficacy of Rivaroxaban can be decreased when used in combination with Levonorgestrel.
Rosiglitazone
The therapeutic efficacy of Rosiglitazone can be decreased when used in combination with Levonorgestrel.
Rucaparib
The metabolism of Levonorgestrel can be decreased when combined with Rucaparib.
Saquinavir
The serum concentration of Levonorgestrel can be decreased when it is combined with Saquinavir.
Saquinavir Mesylate
The serum concentration of Levonorgestrel can be decreased when it is combined with Saquinavir.
Sarilumab
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Sarilumab.
Saxagliptin
The therapeutic efficacy of Saxagliptin can be decreased when used in combination with Levonorgestrel.
Saxagliptin Anhydrous
The therapeutic efficacy of Saxagliptin can be decreased when used in combination with Levonorgestrel.
Secobarbital
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Secobarbital.
Selegiline
The serum concentration of Selegiline can be increased when it is combined with Levonorgestrel.
Sildenafil
The metabolism of Levonorgestrel can be decreased when combined with Sildenafil.
Siltuximab
The serum concentration of Levonorgestrel can be decreased when it is combined with Siltuximab.
Simeprevir
The serum concentration of Levonorgestrel can be increased when it is combined with Simeprevir.
Sitagliptin
The therapeutic efficacy of Sitagliptin can be decreased when used in combination with Levonorgestrel.
Sitagliptin Phosphate
The therapeutic efficacy of Sitagliptin can be decreased when used in combination with Levonorgestrel.
Sodium Citrate
The therapeutic efficacy of Sodium Citrate can be decreased when used in combination with Levonorgestrel.
ST. JOHN'S WORT EXTRACT
The serum concentration of Levonorgestrel can be decreased when it is combined with St. John's Wort.
Sugammadex
The serum concentration of Levonorgestrel can be decreased when it is combined with Sugammadex.
Sulfisoxazole
The metabolism of Levonorgestrel can be decreased when combined with Sulfisoxazole.
Telaprevir
The serum concentration of Levonorgestrel can be decreased when it is combined with Telaprevir.
Telithromycin
The metabolism of Levonorgestrel can be decreased when combined with Telithromycin.
Thalidomide
Levonorgestrel may increase the thrombogenic activities of Thalidomide.
Thiamylal
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Thiamylal.
Thiopental
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Thiopental.
Thiopental Sodium
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Thiopental.
Ticlopidine
The metabolism of Levonorgestrel can be decreased when combined with Ticlopidine.
Tipiracil
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Tipiracil.
Tipranavir
The serum concentration of Levonorgestrel can be increased when it is combined with Tipranavir.
Tocilizumab
The serum concentration of Levonorgestrel can be decreased when it is combined with Tocilizumab.
Tolazamide
The therapeutic efficacy of Tolazamide can be decreased when used in combination with Levonorgestrel.
Tolbutamide
The therapeutic efficacy of Tolbutamide can be decreased when used in combination with Levonorgestrel.
Topiramate
The serum concentration of Levonorgestrel can be decreased when it is combined with Topiramate.
Tranexamic Acid
Tranexamic Acid may increase the thrombogenic activities of Levonorgestrel.
Tretinoin
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Tretinoin.
Trisodium Citrate Anhydrous
The therapeutic efficacy of Sodium Citrate can be decreased when used in combination with Levonorgestrel.
Troglitazone
The therapeutic efficacy of Troglitazone can be decreased when used in combination with Levonorgestrel.
Troxerutin
The therapeutic efficacy of Troxerutin can be decreased when used in combination with Levonorgestrel.
Ulipristal
The therapeutic efficacy of Levonorgestrel can be decreased when used in combination with Ulipristal.
Vemurafenib
The serum concentration of Levonorgestrel can be decreased when it is combined with Vemurafenib.
Venlafaxine
The metabolism of Levonorgestrel can be decreased when combined with Venlafaxine.
Verapamil
The metabolism of Levonorgestrel can be decreased when combined with Verapamil.
Vildagliptin
The therapeutic efficacy of Vildagliptin can be decreased when used in combination with Levonorgestrel.
Voriconazole
The serum concentration of Levonorgestrel can be increased when it is combined with Voriconazole.
Warfarin
Levonorgestrel may decrease the anticoagulant activities of Warfarin.
Ziprasidone
The metabolism of Levonorgestrel can be decreased when combined with Ziprasidone.
