Linked from

The 97 pages that link to Drug interaction, each with the reason it gives.

• Dietary supplementRelated: Some supplement ingredients alter medication effects or make treatment less safe.

• Cytochrome P450Related: Inhibition or induction of P450 enzymes can change the concentration of coadministered drugs.

• Traditional medicineRelated: Traditional remedies can alter the effects or risks of prescribed medicines.

• Drug metabolismRelated: One compound can inhibit or induce enzymes that metabolize another.

• Adverse drug reactionRelated: Interactions can raise drug exposure or combine effects, precipitating a reaction at prescribed doses.

• Therapeutic drug monitoringRelated: Interactions can shift concentrations enough to require testing or dose adjustment.

• ComorbidityRelated: Treatments for separate conditions can interact and complicate care.

• PharmacodynamicsRelated: Combined drugs can strengthen, weaken, or otherwise modify each other’s biological effects.

• Serotonin syndromeNarrower topic: Many cases arise when interacting medications amplify serotonergic effects.

• Emergency contraceptionRelated: Some enzyme-inducing medicines can reduce the effectiveness of oral emergency contraception.

• Drug-induced liver injuryRelated: Interactions can alter drug concentrations or metabolism and complicate attribution of liver injury.

• CYP3A4Related: CYP3A4 inhibition or induction is a common mechanism behind interactions.

• AntihistamineRelated: Alcohol and other sedatives can intensify drowsiness from some antihistamines.

• DoxycyclineRelated: Iron, calcium, and some antacids can reduce doxycycline absorption when taken together.

• AntacidNarrower topic: By changing stomach acidity or binding medicines, some antacids reduce absorption of other drugs.

• PharmacyRelated: Screening for interactions is a core safety check during medicine review.

• AromatherapyRelated: Some oils may affect medicines or complicate treatment; product-specific advice matters.

• BupropionRelated: Bupropion inhibits CYP2D6 and can interact with medications metabolized by that enzyme.

• Drug toleranceRelated: Interactions can alter exposure or effects, complicating dose decisions in tolerant patients.

• AzithromycinRelated: Azithromycin can interact with other drugs, including through effects on cardiac rhythm risk.

• Complementary and alternative medicineRelated: Herbs and supplements may alter prescription-drug effects when used alongside conventional care.

• Monoamine oxidase inhibitorNarrower topic: MAO inhibitors have clinically significant interactions with numerous medicines and foods.

• OndansetronNarrower topic: Other QT-prolonging or serotonergic drugs can alter the safety considerations for ondansetron.

• TurmericRelated: Concentrated turmeric products may affect medicines or increase risks such as bleeding.

• LamotrigineRelated: Valproate raises lamotrigine levels, while enzyme-inducing antiseizure drugs can lower them.

• PropranololRelated: Other medicines can alter propranolol levels or intensify its effects on heart rate and blood pressure.

• Combination therapyNarrower topic: Every combination requires attention to interactions that can alter effects or safety.

• DuloxetineNarrower topic: Duloxetine’s interactions can alter drug concentrations or compound adverse effects.

• Over-the-counter drugRelated: OTC products can interact with prescriptions and supplements, often without obvious warning signs.

• PoisoningCompared with: Interactions can contribute to poisoning even when each substance is taken as directed.

• BuspironeRelated: Strong CYP3A4 inhibitors can raise buspirone exposure, and grapefruit may also affect levels.

• ContraindicationRelated: An interaction can create a treatment hazard that functions as a contraindication.

• Hormonal contraceptionRelated: Certain medicines can reduce the effectiveness of some hormonal methods.

• Psychiatric medicationRelated: Interactions can alter psychiatric medication levels or increase risks such as sedation and toxicity.

• PsychopharmacologyRelated: Interactions can alter psychiatric drug levels or intensify sedation and other harms.

• TerbinafineNarrower topic: Terbinafine’s inhibition of CYP2D6 can alter the effects of other medicines.

• Drug overdoseRelated: Combining depressants can intensify impairment and breathing suppression beyond either substance alone.

• PiperineRelated: Piperine’s effects on drug-metabolizing enzymes and transporters can alter medication exposure.

• Active metaboliteRelated: Interactions can alter the enzymes that form or clear active metabolites.

• Azole antifungalRelated: Many azoles inhibit human drug-metabolizing enzymes and raise concentrations of coadministered medicines.

• CetirizineRelated: Alcohol and other sedating substances can increase impairment when combined with cetirizine.

• MDMANarrower topic: MDMA’s risks depend partly on co-used substances and medications.

• PharmacotherapyRelated: Interactions can alter treatment effectiveness or create unexpected harm.

• Prescription drugRelated: Prescribers and pharmacists assess interactions before treatment and dispensing.

• Set and settingCompared with: Unlike set and setting, this source of variation comes from another chemical exposure.

• CannabidiolRelated: CBD can alter the metabolism of some medicines, including drugs used to treat epilepsy.

• PhenobarbitalRelated: Phenobarbital’s enzyme induction can weaken treatments including hormonal contraceptives and anticoagulants.

• TacrolimusRelated: Enzyme inhibitors and inducers can sharply alter tacrolimus exposure and toxicity risk.

• DextromethorphanNarrower topic: Interactions can intensify dextromethorphan effects or increase toxicity.

• MidazolamNarrower topic: CYP3A4 inhibitors can raise midazolam concentrations, while inducers can reduce its effects.