Interaction Checker

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Website updates in May and June

Tuesday 01 July 2025

Key updates for May and June are shown below. In addition to these changes, a further 19 interactions have been revised due to, for example, updated publications, change of QT risk, and/or enzyme inhibition/induction effect.

New Comedications
Anaesthetics and Muscle Relaxants: Cyclobenzaprine
Antibacterials: Gatifloxacin, Nafcillin, Neomycin, Roxithromycin
Anticoagulants, Antiplatelets and Fibrinolytics: Nadroparin
Anticonvulsants: Felbamate
Antihistamines: Clemastine
Anxiolytics/Hypnotics/ Sedatives: Eszopiclone
Bronchodilators: Zafirlukast
Cough and Cold Preparations: Benzonatate
Gastrointestinal Agents: Docusate
Other: Glacial acetic acid (topical), Phenylephrine, Piracetam, Zileuton

Interaction Colour Changes
↑ Green to yellow:
Telavancin + efavirenz
Telavancin + fostemsavir
Bilastine + efavirenz
Bilastine + rilpivirine
Bilastine + rilpivirine/emtricitabine/tenofovir alafenamide
Bilastine + rilpivirine/emtricitabine/tenofovir-DF
Bilastine + cabotegravir/rilpivirine
Bilastine + dolutegravir/rilpivirine
Bilastine + fostemsavir

↑ Yellow to amber:
Zopiclone + lenacapavir

↑ Amber to red:
Dexamethasone (>16 mg) + bictegravir/emtricitabine/tenofovir alafenamide

↓ Yellow to green:
Bosentan + bictegravir/emtricitabine/tenofovir alafenamide
Bosentan + dolutegravir
Bosentan + dolutegravir/lamivudine
Bosentan + dolutegravir/abacavir/lamivudine
Bosentan + dolutegravir/lamivudine/tenofovir-DF

↓ Red to amber:
Rifampicin + atazanavir/ritonavir

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Awards and commendations
bma-foundation-for-medical-research british-medical-journal-2018 queens_aniversary_prize_2017 rcp-excellence-patient-care-awards-2017
healthline-best-HIV-and-AIDS-apps-of-2019
building_better_healthcare_awards_2016 healthline-best-HIV-and-AIDS-apps-of-2016