Could your newest symptom come from a pill you already take?

A prescribing cascade starts when a side effect of one drug is misread as a new medical condition and a second drug is prescribed to treat it. The term comes from a 1997 BMJ paper by Paula Rochon and Jerry Gurwitz. This episode, built from our written guide, walks through the classic example: a calcium channel blocker such as amlodipine causes ankle swelling, the swelling is treated with a diuretic, and nobody reconsiders the first drug. In older adults with high blood pressure, that cascade was linked to a 21% relative increase in emergency department visits and hospitalizations within 90 days.

It covers why cascades stay hidden (the two prescriptions usually come from two different clinicians, the side effect can take weeks to months to appear, and medication lists are sorted alphabetically rather than by start date), the nine high-priority cascades on the ThinkCascades list, which include benzodiazepines, antipsychotics and SSRIs or SNRIs, and the question to ask at every new symptom: could it be caused by a drug the person is already taking? It also explains why unwinding a cascade starts with the first drug, one change at a time, with a gradual taper for medicines that carry withdrawal risk.

Read the full guide: Prescribing Cascades: How to Spot and Unwind Them. To find someone trained in this work, see the MyDeprescriber provider directory.

The hosts on this episode are AI-generated from the written guide.

Educational only, not medical advice. Never stop a medication without your provider. If you are in crisis in the US, call or text 988.