Interactions
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Complementary products: resources to support answering questions
21 May 2026Resources for reviewing interactions with supplements and complementary, herbal and alternative products, including homeopathy, Chinese and Ayurvedic.
Drug interactions: resources to support answering questions
20 March 2023Suggested resources to help primary care healthcare professionals find information to answer questions about drug interactions
Identifying risk factors for developing a long QT interval
17 February 2026Some medicines (erythromycin, citalopram, ondansetron) can cause a long QT interval. Consider risk factors and follow MHRA recommendations for safe use.
Advising on complementary products and conventional medicines
1 December 2025Decision making when advising on interactions with supplements and complementary, herbal and alternative products, including homeopathy, Chinese and Ayurvedic.
Considerations and interactions with GLP-1 receptor agonists
12 November 2025Signposting key risks and interactions of GLP-1 receptor agonists in diabetes, obesity, and weight management.
Managing interactions with direct oral anticoagulants (DOACs)
20 June 2025Interactions with apixaban, dabigatran, edoxaban or rivaroxaban can result in increased risks of a bleed or thrombosis. We advise on management options.
Considering drug interactions with smoking
8 November 2023Tobacco smoke can induce liver enzymes, affecting drug metabolism. Some medicines may need dose adjustment or monitoring if a person stops or starts smoking.
Considering interactions with local anaesthetics in dentistry
6 January 2025Interpreting significance of drug interactions with dental local anaesthetic (LA) cartridges and why most aren’t clinically relevant in general dental practice.
Managing interactions with local anaesthetics in dentistry
3 January 2025Most drug interactions with local anaesthetics (LA) cartridges are not clinically relevant in general dentistry. We advise on management options where needed.
Understanding enzyme or transporter-based drug interactions
5 July 2024Many interactions are due to inhibition or induction of metabolising enzymes or drug transporters. Enzyme, transporter, and drug half-lives dictate duration.