Low-Dose Paroxetine (Brisdelle) Side Effects

Medically reviewed byEditorial Medical Review, MD, NAMS-CMP

Last reviewed: 6/2/2026 · Verify credentials →

Low-Dose Paroxetine (Brisdelle) side-effect incidence rates below are drawn from FDA prescribing information and clinical trials. Most common effects are gastrointestinal and peak during dose changes.

Common side effects(5)

Incidence rates from clinical trials. Individual experience varies.

Low-Dose Paroxetine (Brisdelle) common side effects with incidence rates
Effect	Incidence	Note
Nausea	4-5%	Usually mild and improves within first 2 weeks
Headache	4-5%
Fatigue	3-4%
Dizziness	2-3%
Vomiting	1-2%

Serious side effects(4)

Less common but require medical attention.

Serotonin syndrome. Rare at 7.5 mg dose, but possible with MAOIs, tramadol, triptans, lithium combinations
Suicidal ideation (FDA class warning). Increased risk in young adults <25 — Brisdelle's population is older, but warning applies
Bleeding risk. Mild increase, particularly with NSAIDs, aspirin, or anticoagulants
Hyponatremia. SIADH-type — older women on diuretics at higher risk

Managing side effects(4)

Take at bedtime — improves sleep and reduces nausea perception
Allow 4 weeks for full hot-flash benefit to emerge (not immediate)
Do NOT combine with tamoxifen — paroxetine inhibits CYP2D6 and reduces tamoxifen efficacy. Use venlafaxine or escitalopram instead if on tamoxifen.
Taper slowly (over 2-4 weeks) if discontinuing to avoid SSRI discontinuation syndrome

Sources(5)

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Low-Dose Paroxetine (Brisdelle) Side Effects

Medically reviewed byEditorial Medical Review, MD, NAMS-CMP

Last reviewed: 6/2/2026 · Verify credentials →

Common side effects(5)

Incidence rates from clinical trials. Individual experience varies.

Low-Dose Paroxetine (Brisdelle) common side effects with incidence rates
Effect	Incidence	Note
Nausea	4-5%	Usually mild and improves within first 2 weeks
Headache	4-5%
Fatigue	3-4%
Dizziness	2-3%
Vomiting	1-2%

Serious side effects(4)

Less common but require medical attention.

Serotonin syndrome. Rare at 7.5 mg dose, but possible with MAOIs, tramadol, triptans, lithium combinations
Suicidal ideation (FDA class warning). Increased risk in young adults <25 — Brisdelle's population is older, but warning applies
Bleeding risk. Mild increase, particularly with NSAIDs, aspirin, or anticoagulants
Hyponatremia. SIADH-type — older women on diuretics at higher risk

Managing side effects(4)

Take at bedtime — improves sleep and reduces nausea perception
Allow 4 weeks for full hot-flash benefit to emerge (not immediate)
Do NOT combine with tamoxifen — paroxetine inhibits CYP2D6 and reduces tamoxifen efficacy. Use venlafaxine or escitalopram instead if on tamoxifen.
Taper slowly (over 2-4 weeks) if discontinuing to avoid SSRI discontinuation syndrome

Was this Low-Dose Paroxetine (Brisdelle) side-effects guide helpful?