Main menu: Drug interactions - Simple and Practical Mental Health

This Menu contains links to all articles on this website that are about Drug Interactions. Some of the other Main menus for this website are as follows:

Drug interaction search (checker) tools

Drug interaction search (checker) tools: Free options

Drug interaction search (checker) tools: Paid options

COVID-19 drug interaction checker

How to check for drug interactions with an herbal product like ashwagandha

Levels of seriousness in drug interaction search results

Video: How to do efficient drug interaction searches to quickly identify the important ones

Who’s job is it to check for drug interactions?

How to easily search for drug interactions with cannabidiol

Cytochrome P450 interactions

Cytochrome P450 system and psychiatric medications: An introduction and important tips

Cytochrome P450 3A4: Substrates, inhibitors, and inducers

What the FDA’s “Table of Pharmacogenetic Associations” says about psychotropic medications

Pharmacogenetic testing in the office: Cytochrome P450 enzymes

The Flockhart P450 Drug Interaction Table: Full table (Link to external site)

Antidepressants with much fewer P450 drug interactions

Doxepin and cytochrome P450 drug interactions

Cytochrome P450 drug interactions with benzodiazepines

Drug interactions with medications for COVID-19

COVID-19 drug interaction checker

Nirmatrelvir-ritonavir (Paxlovid™): Drug interactions with psychiatric medications

Drug interactions with caffeine

Caffeine can significantly change serum clozapine levels

Interactions that can significantly affect caffeine metabolism

Drug interactions with cannabinoids

Effects of cannabis or cannabinoids on the cytochrome P450 enzymes

Drug interactions with cardiovascular medications

Lithium and antihypertensives: Be careful!

Direct-acting oral anticoagulants (DOACs) and antidepressants

Very important drug interactions between warfarin and psychotropic medications

Drug interactions with food

Grapefruit or its juice can interact with psychotropic medications

Ketogenic diet and amphetamines

Drug interactions with herbs and supplements

Interactions between herbal and psychotropic medications

How to check for drug interactions with an herbal product like ashwagandha

Biotin can interfere with many laboratory tests—and lead to serious misdiagnosis

Drug interactions with oral contraceptives and intrauterine devices

5 Action Items about OCs and lamotrigine

Does lamotrigine decrease the effectiveness of oral contraceptives?

Can oral contraceptives affect clozapine levels?

Don’t cause unwanted pregnancy

Do psychotropic medications affect intrauterine devices (IUDs)?

Drug interactions with smoking

Smoking can seriously affect some psychotropic medications

Time course of decrease in CYP1A2 activity after smoking cessation

Drug interactions: Miscellaneous

Common and important drug Interactions in psychopharmacology

Think twice before adding topiramate to valproate

Some antidepressants may have clinically important interactions with tramadol (Ultram®)

Important instructions regarding MAO inhibitors and other medications

Why is dextromethorphan being combined with a CYP 2D6 inhibitor?

Switching antidepressants: A difficult case

Important drug interactions between antiretrovirals and antidepressants

What could happen when changing from an antipsychotic to a stimulant?

Be careful if a person is on both a stimulant and an antipsychotic

Dose adjustment for second-generation antipsychotics based on drug interactions

Drug interactions affecting prodrugs

Order genetic testing for a patient on atomoxetine?

Seizure risk if atomoxetine and bupropion are used together?

Important interactions when using two medications for ADHD

When prescribing an amphetamine, warn patients about anti-acid medications

Disclaimer: The content on this website is provided as general education for medical professionals. It is not intended or recommended for patients or other laypersons or as a substitute for medical advice, diagnosis, or treatment. Patients must always consult a qualified healthcare professional regarding their diagnosis and treatment. Healthcare professionals should always check this website for the most recently updated information.