Paroxetine + Rifampin

MODERATE — Monitor Closely

CAUTION — monitor mood

Evidence level: MODERATE

What this interaction means

Rifampin may reduce Paxil effectiveness.

How it works (mechanism)

Rifampin induces CYP enzymes. May reduce paroxetine levels.

Practical advice

Monitor for depression/anxiety breakthrough.

Timing

Take Paroxetine and Rifampin at their usual prescribed times. Some antibiotics (linezolid especially) have serotonergic properties and should never be combined with SSRIs — if you are on linezolid, confirm this combination with your prescriber. Standard antibiotics like amoxicillin or azithromycin are generally safe alongside SSRIs.

Risk factors

Active depression

Symptoms to watch for

Worsening depression, anxiety

What to tell your doctor

Coordinate between prescribers.

Safer alternatives

Discuss this combination with your prescriber. They may adjust timing, dosing, or switch to an alternative with fewer interaction risks. Never stop an antidepressant abruptly — taper under medical guidance.

Frequently asked questions

Can I take Paroxetine and Rifampin together?

Rifampin may reduce Paxil effectiveness.

When should I take Paroxetine vs Rifampin?

Take Paroxetine and Rifampin at their usual prescribed times. Some antibiotics (linezolid especially) have serotonergic properties and should never be combined with SSRIs — if you are on linezolid, confirm this combination with your prescriber. Standard antibiotics like amoxicillin or azithromycin are generally safe alongside SSRIs.

What symptoms should I watch for if I combine Paroxetine and Rifampin?

Worsening depression, anxiety

Are there safer alternatives to combining Paroxetine with Rifampin?

Discuss this combination with your prescriber. They may adjust timing, dosing, or switch to an alternative with fewer interaction risks. Never stop an antidepressant abruptly — taper under medical guidance.

What should I tell my doctor about taking Paroxetine and Rifampin?

Coordinate between prescribers.

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