Starting venlafaxine after SSRI — dual action, BP and discontinuation (CASC)

Station instructions (candidate)

You have 7 minutes. Speak with the patient (and partner if engaged). Explain why a change from escitalopram is reasonable, what an SNRI is in plain language without overselling “always stronger dual action,” propose a venlafaxine XR start and review plan including blood pressure checks, address “addiction/withdrawal” fears accurately, mention sexual side-effects, and safety-net for early worsening mood or rare dangerous combinations. Do not guarantee remission. Do not dismiss online fears — reframe with evidence.[1][2][4][7]

Marking domains

Empathy and agenda setting; accurate plain-language mechanism (serotonin and, at higher doses, noradrenaline systems); STAR*D-style equipoise that venlafaxine is one good switch option not the only magic drug; dose and titration clarity; BP monitoring; discontinuation vs addiction distinction; sexual side-effect honesty; crisis and early-review plan; partner involvement; no MAOI improvisation.[1][3][4][5][8]

Model communication map

1. Open: thank them; summarise incomplete response on an adequate escitalopram trial; check what “dual” and “withdrawal” mean to her.[7]
2. Why change: many people need a second step; large sequential-care evidence supports switching after SSRI non-remission to options including venlafaxine XR, with similar average outcomes to other switches — we individualise.[1]
3. What SNRI means: medicines that act on serotonin and noradrenaline pathways; with venlafaxine the noradrenaline part is more at higher doses — so we start carefully and only increase if needed, rather than promising instant dual power on day one.[2]
4. Plan example: cross-taper off escitalopram while starting venlafaxine XR 75 mg (or 37.5 mg first if she is activation-sensitive), review in 1–2 weeks, consider increase toward 150–225 mg only if tolerated and still symptomatic; BP check each step.[3][7]
5. “Heart damage” talk: can raise blood pressure in some people, more as dose rises — that is why we measure BP, not because everyone gets heart attacks; report severe headache, chest pain or very high home readings.[3]
6. “Addiction” talk: stopping suddenly can cause short-lived discontinuation symptoms (dizziness, electric-shock feelings, flu-like) because the medicine leaves the system quickly — that is not the same as opioid addiction; we will taper when stopping.[4]
7. Sexual function: many antidepressants can affect sex drive, arousal or orgasm — we will ask at reviews and can adjust plan rather than suffer in silence.[5]
8. Safety: more contact early if mood worsens, agitation or suicidal thoughts; list all other medicines/supplements (avoid MAOI combinations and random online stacks).[8][7]
9. Close: written plan, questions, crisis contacts; optional psychology alongside medicine.[6][7]

Common fails

• Promising venlafaxine is always stronger than every SSRI for every person.[6]
• Ignoring BP or sexual side-effects.[3][5]
• Calling discontinuation “proof of addiction.”[4]
• Starting 225–375 mg on day one without titration talk.[2]
• Dismissing the partner or online fears without accurate reframing.