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What the FDA labels say about taking them together

Clomipramine and paroxetine

Clomipramine's FDA label of November 26, 2024 names paroxetine in its drug interactions section; paroxetine's label does not name clomipramine itself but warns about its class (Tricyclic antidepressants). The clomipramine label: “While all the selective serotonin reuptake inhibitors (SSRIs), e.g., fluoxetine, sertraline, paroxetine, and fluvoxamine, inhibit P450 2D6, they may vary in the extent of inhibition.”

Check it at the source: the clomipramine FDA label on DailyMed (effective November 26, 2024); the paroxetine FDA label on DailyMed (effective February 12, 2026, Mylan Pharmaceuticals Inc.).

What does the clomipramine label say about paroxetine?

Clomipramine label, drug interactions

While all the selective serotonin reuptake inhibitors (SSRIs), e.g., fluoxetine, sertraline, paroxetine, and fluvoxamine, inhibit P450 2D6, they may vary in the extent of inhibition.

Source: FDA drug label (CLOMIPRAMINE HYDROCHLORIDE), SpecGx LLC, effective November 26, 2024 (SPL set d7cee3fa-d05c-4702-8f75-f446627bdb49), via openFDA; the full label on DailyMed

What does the paroxetine label say about clomipramine?

Paroxetine's label does not name clomipramine itself; it warns about its class (Tricyclic antidepressants):

Paroxetine label, drug interactions

If serotonin syndrome occurs, consider discontinuation of paroxetine tablets and/or concomitant serotonergic drugs [see Warnings and Precautions (5.2) ]. Examples other SSRIs, SNRIs, triptans, tricyclic antidepressants, opioids, lithium, tryptophan, buspirone, amphetamines, and St. John’s Wort.

Paroxetine label, warnings and precautions

The risk is increased with concomitant use of other serotonergic drugs (including triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, meperidine, methadone, tryptophan, buspirone, amphetamines and St. John’s Wort) and with drugs that impair metabolism of serotonin, i.e., MAOIs [see Contraindications (4), Drug Interactions (7.1) ].

Source: FDA drug label (Paroxetine), Mylan Pharmaceuticals Inc., effective February 12, 2026 (SPL set 89dd7e24-85fc-4152-89ea-47ec2b48a1ed), via openFDA; the full label on DailyMed

These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.

Both medicines on the record

16Clomipramine generic labelers
45Paroxetine generic labelers
ClomipramineParoxetine
Labeled forn/aDepression, Anxiety, Menopause symptoms
Boxed warningYesYes
Pharmacy cost (NADAC)$0.189 per capsule 25 mg capsule$0.0611 per tablet 20 mg tablet
Shortage nowNo current entryNo current entry

Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)

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