Skip to content
ClinCalc Pro
Menu
PDE4 Inhibitor Pregnancy: Roflumilast is NOT recommended during pregnancy - there are limited data in pregnant women and animal studies have shown reproductive toxicity; it crosses the placenta in pregnant rats. Women of childbearing age should be advised to use an effective method of contraception during treatment, and roflumilast is not recommended in women of childbearing potential not using contraception. Breast-feeding: animal data show excretion of roflumilast or its metabolites in milk and a risk to the breastfed infant cannot be excluded - should not be used during breast-feeding.

Roflumilast

Brand names: Daxas

Roflumilast is an oral selective phosphodiesterase-4 inhibitor used as add-on maintenance therapy in severe chronic obstructive pulmonary disease associated with chronic bronchitis and frequent exacerbations.

Auto-extracted from the source labelling — not yet independently clinician-verified. These values were distilled from the UK SPC (or the US label where noted) but have not had a clinician sign-off. Confirm against the current SmPC before prescribing.

Adult dose

Dose: Starting dose: one 250 micrograms tablet once daily for 28 days. Maintenance dose: after those 28 days patients must be up-titrated to one 500 micrograms tablet once daily.
Route: Oral - tablet swallowed with water
Frequency: Once daily, taken at the same time every day, with or without food
The 250 micrograms starting dose is intended to reduce adverse reactions and patient discontinuation when initiating therapy but is a SUB-THERAPEUTIC dose, and should be used only as a starting dose. Roflumilast 500 micrograms may need to be taken for several weeks to achieve its full effect; it has been studied in clinical trials for up to one year and is intended for maintenance treatment in COPD. Not indicated as a rescue medicinal product for the relief of acute bronchospasm. Elderly: no dose adjustment necessary. Hepatic impairment: clinical data in mild impairment (Child-Pugh A) are insufficient to recommend a dose adjustment, so use with caution; patients with moderate or severe impairment (Child-Pugh B or C) must not take it (contraindicated). Weight decrease occurs more frequently than with placebo - check body weight of underweight patients at each visit, advise regular self-weighing, and stop roflumilast if there is unexplained and clinically concerning weight loss. Do not initiate, or stop existing treatment, in patients with severe immunological disease, severe acute infectious disease, cancers (except basal cell carcinoma), or patients on immunosuppressive medicinal products; not recommended in congestive heart failure NYHA grades 3 and 4. Associated with an increased risk of psychiatric disorders including insomnia, anxiety, nervousness and depression, with rare instances of suicidal ideation and behaviour usually within the first weeks of treatment - not recommended in patients with a history of depression associated with suicidal ideation or behaviour, and discontinue if new or worsening psychiatric symptoms or suicidal ideation occur. Paediatric: there is no relevant use of this product in the paediatric population (under 18 years) for the indication of COPD; no per-kg dose is stated.

Dose adjustments

Renal

No dose adjustment is necessary in renal impairment (section 4.2).

Dose auto-extracted from UK Summary of Product Characteristics (SPC) via the eMC; US FDA prescribing information (openFDA / DailyMed) — cross-check; US labelling may differ from UK — not yet clinician-verified. Always confirm against the product SmPC and your local formulary before prescribing.

Contraindications

  • Hypersensitivity to the active substance or to any of the excipients listed in section 6.1
  • Moderate or severe hepatic impairment (Child-Pugh B or C)

Side effects

  • Common: diarrhoea (5.9%)
  • Common: weight decreased (3.4%), decreased appetite
  • Common: nausea (2.9%), abdominal pain (1.9%)
  • Common: headache (1.7%), insomnia
  • Uncommon: anxiety, depression, nervousness, tremor, dizziness, palpitations, vomiting, gastritis, dyspepsia, rash, muscle spasms and weakness, malaise, asthenia, fatigue. Rare: suicidal ideation and behaviour (including suicide), gynaecomastia, angioedema, panic attack

Interactions

  • eMC section 4.5 was not retrieved in this bundle; the following are from the US label (cross-check only - verify against the UK SPC)
  • US label: strong cytochrome P450 enzyme inducers (e.g. rifampicin, phenobarbital, carbamazepine, phenytoin) decrease systemic exposure to roflumilast and may reduce therapeutic effectiveness - concomitant use is not recommended
  • US label: CYP3A4 inhibitors, or dual inhibitors of CYP3A4 and CYP1A2 (e.g. erythromycin, ketoconazole, fluvoxamine, enoxacin, cimetidine), may increase roflumilast systemic exposure and result in increased adverse reactions - weigh the risk of concurrent use carefully against benefit
  • Section 4.4 (eMC): treatment should not be initiated, or should be stopped, in patients being treated with immunosuppressive medicinal products (methotrexate, azathioprine, infliximab, etanercept, or long-term oral corticosteroids; short-term systemic corticosteroids excepted)

Clinical monograph

How it works

It inhibits phosphodiesterase-4, raising intracellular cyclic AMP in inflammatory cells and thereby reducing the airway inflammation characteristic of COPD.

Prescribing in practice

  • Psychiatric effects including mood changes, anxiety, depression and suicidal ideation have been reported and warrant careful assessment of mental health before and during treatment.
  • Weight loss, diarrhoea and nausea are common, particularly early in treatment, and weight should be monitored.
  • It is not a bronchodilator and is contraindicated in moderate to severe hepatic impairment.

Monitoring

Monitor body weight, mental health and gastrointestinal tolerability during treatment.

Counselling the patient

  • Report any low mood, anxiety or thoughts of self-harm to your healthcare team without delay.
  • Some weight loss, nausea and diarrhoea are common at first and often settle.
  • This tablet adds to your inhalers and is not a reliever for breathlessness.

Evidence & guidelines

The MHRA has highlighted the risk of psychiatric reactions with roflumilast, and NICE guidance positions it as add-on therapy in selected severe COPD.

Reference: NICE TA244; GOLD COPD Guidelines 2024; Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. The structured dose values shown have been reviewed by a clinician. Monograph status: clinician-reviewed (2026-07-04).

Related

Curated clinical cross-links plus same-class fallbacks.