Omeprazole Magnesium Interactions

Brand names: Prilosec

14 interactions on record

Combination Therapy with Clarithromycin and Amoxicillin Clinical Impact: Concomitant administration of clarithromycin with other drugs can lead to serious adverse reactions, including potentially fatal arrhythmias, and are contraindicated. Amoxicillin also has drug interactions. See Drug Interactions in prescribing information for amoxicillin.

Source: FDA drug label - omeprazole magnesium

Combination Therapy with Clarithromycin and Amoxicillin Clinical Impact: Concomitant administration of clarithromycin with other drugs can lead to serious adverse reactions, including potentially fatal arrhythmias, and are contraindicated. Intervention: See Contraindications , Warnings and Precautions in prescribing information for clarithromycin.

Source: FDA drug label - omeprazole magnesium

• Decreased exposure of some antiretroviral drugs (e.g., rilpivirine, atazanavir and nelfinavir) when used concomitantly with omeprazole may reduce antiviral effect and promote the development of drug resistance [see Clinical Pharmacology ( 12.3 )]. Atazanavir : Avoid concomitant use with PRILOSEC. See prescribing information for atazanavir for dosing information.

Source: FDA drug label - omeprazole magnesium

• Decreased exposure of some antiretroviral drugs (e.g., rilpivirine, atazanavir and nelfinavir) when used concomitantly with omeprazole may reduce antiviral effect and promote the development of drug resistance [see Clinical Pharmacology ( 12.3 )]. Nelfinavir : Avoid concomitant use with PRILOSEC. See prescribing information for nelfinavir.

Source: FDA drug label - omeprazole magnesium

CYP2C19 Substrates (e.g., clopidogrel, citalopram, cilostazol, phenytoin, diazepam) Clopidogrel Clinical Impact: Concomitant use of omeprazole 80 mg results in reduced plasma concentrations of the active metabolite of clopidogrel and a reduction in platelet inhibition [see Clinical Pharmacology ( 12.3 )]. Diazepam Clinical Impact: Increased exposure of diazepam [see Clinical Pharmacology ( 12.3 )] . Intervention: Monitor patients for increased sedation and reduce the dose of diazepam as needed.

Source: FDA drug label - omeprazole magnesium

Drugs Dependent on Gastric pH for Absorption (e.g., iron salts, erlotinib, dasatinib, nilotinib, mycophenolate mofetil, ketoconazole/itraconazole) Clinical Impact: Omeprazole can reduce the absorption of other drugs due to its effect on reducing intragastric acidity.

Source: FDA drug label - omeprazole magnesium

Drugs Dependent on Gastric pH for Absorption (e.g., iron salts, erlotinib, dasatinib, nilotinib, mycophenolate mofetil, ketoconazole/itraconazole) Clinical Impact: Omeprazole can reduce the absorption of other drugs due to its effect on reducing intragastric acidity.

Source: FDA drug label - omeprazole magnesium

Drugs Dependent on Gastric pH for Absorption (e.g., iron salts, erlotinib, dasatinib, nilotinib, mycophenolate mofetil, ketoconazole/itraconazole) Clinical Impact: Omeprazole can reduce the absorption of other drugs due to its effect on reducing intragastric acidity.

Source: FDA drug label - omeprazole magnesium

Drugs Dependent on Gastric pH for Absorption (e.g., iron salts, erlotinib, dasatinib, nilotinib, mycophenolate mofetil, ketoconazole/itraconazole) Clinical Impact: Omeprazole can reduce the absorption of other drugs due to its effect on reducing intragastric acidity.

Source: FDA drug label - omeprazole magnesium

Drugs Dependent on Gastric pH for Absorption (e.g., iron salts, erlotinib, dasatinib, nilotinib, mycophenolate mofetil, ketoconazole/itraconazole) Clinical Impact: Omeprazole can reduce the absorption of other drugs due to its effect on reducing intragastric acidity.

Source: FDA drug label - omeprazole magnesium

7 DRUG INTERACTIONS Table 3 and Table 4 include drugs with clinically important drug interactions and interaction with diagnostics when administered concomitantly with omeprazole and instructions for preventing or managing them. Table 3: Clinically Relevant Interactions Affecting Drugs Co-Administered with Omeprazole and Interaction with Diagnostics Antiretrovirals Clinical Impact: The effect of PPIs on antiretroviral drugs is variable. • Decreased exposure of some antiretroviral drugs (e.g., rilpivirine, atazanavir and nelfinavir) when used concomitantly with omeprazole may reduce antiviral effect and promote the development of drug resistance [see Clinical Pharmacology ( 12.3 )].

Source: FDA drug label - omeprazole magnesium

Ritonavir-containing products : see prescribing information for specific drugs.

Source: FDA drug label - omeprazole magnesium

• Increased exposure of other antiretroviral drugs (e.g., saquinavir) when used concomitantly with omeprazole may increase toxicity [see Clinical Pharmacology ( 12.3 )]. Saquinavir : See the prescribing information for saquinavir for monitoring of potential saquinavir-related toxicities.

Source: FDA drug label - omeprazole magnesium

Intervention: Voriconazole : Dose adjustment of PRILOSEC is not normally required. See prescribing information for voriconazole.

Source: FDA drug label - omeprazole magnesium