Glossary term
Interaction: Interaction is the plain-language term for one medicine, substance or health factor changing the effect or safety of another.
Why this term matters
Patients use and search this wording more often than “drug-drug interaction”.
UK medical cannabis context
NICE tells prescribers to consider current and past cannabis use, online products and interactions with other medicines.
What not to assume
Interactions may involve OTC medicines, alcohol, supplements or illicit products as well as prescriptions.
Careful wording: Avoid assuming only prescribed medicines matter.
Related glossary terms
Related MCPH pages
Sources and review notes
This entry is educational vocabulary, not medical advice. Suitability, prescribing, product choice and monitoring belong with a qualified clinician or pharmacist.