Pirfenidone Capsules or Tablets: A Guide to Pulmonary Fibrosis Treatment
Updated: 2 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 17, 2026
Pirfenidone is a prescription medication used to treat pulmonary fibrosis, a condition characterized by the scarring and stiffening of lung tissue. By preventing these changes, the medication delays the progression of symptoms and helps patients breathe more easily. It is taken orally with food to minimize side effects and requires careful monitoring of liver health and sun sensitivity. Patients must remain consistent with their dosage and inform their care team about tobacco use or other medications.
Quick Answer: What is pirfenidone?
Pirfenidone is an oral medication that treats pulmonary fibrosis by preventing scarring and stiffening of lung tissue. It is taken daily with food and water at the same time each day, with the goal of delaying symptom worsening and preserving lung function. Patients must avoid sun exposure and immediately report signs of liver injury or serious skin reactions. [1]
What the research says
Pirfenidone slows the decline in lung function in idiopathic pulmonary fibrosis. A network meta-analysis of randomized controlled trials covering 65 idiopathic pulmonary fibrosis studies and 13,521 participants found that pirfenidone, nintedanib, and interferon gamma-1b slowed lung function decline and reduced mortality (Singh et al., Expert Rev Clin Immunol, 2025).
Stomach and bowel side effects are common with anti-fibrotic drugs. A meta-analysis of seven randomized trials of pirfenidone or nintedanib in 1,816 patients with non-IPF progressive fibrosing lung disease found nausea and vomiting in 54.2% versus 20.3% on placebo, diarrhea in 65.2% versus 27.6%, and treatment discontinuation in 18.4% versus 9.9% (Chong et al., Heart Lung, 2024).
Pirfenidone is linked to more sun-related skin reactions than nintedanib. Analyzing 26,352 pirfenidone adverse event reports in the US FDA database (2014 to early 2025) alongside a meta-analysis of 10 trials, researchers found both drugs slowed the decline in forced vital capacity, both mainly caused gastrointestinal side effects, and pirfenidone was linked to more photosensitivity reactions (Yang et al., Naunyn Schmiedebergs Arch Pharmacol, 2026).
Research summaries are based on article abstracts retrieved from PubMed.
What role does pirfenidone play in managing pulmonary fibrosis?
Pulmonary fibrosis is a progressive condition where the lungs become scarred, making it increasingly difficult for the body to process oxygen. Pirfenidone, often known by the brand name Esbriet, is a key therapeutic option designed to address this challenge. Rather than curing the condition, the medication works by interfering with the processes that lead to lung tissue changes, thereby slowing the rate of decline in respiratory health. [1]
This medication is essential for patients whose symptoms are worsening over time. By maintaining the integrity of lung tissue for longer periods, pirfenidone helps patients manage their daily activities with greater ease. [1]
How should you take pirfenidone, and at what dosage?
To achieve the best results, pirfenidone must be taken exactly as directed by a healthcare provider. Consistency is the foundation of effective treatment, as it ensures a steady level of the medication remains in the system to combat tissue changes. [1]
Requirement | Instructions |
Method | Take by mouth with a full glass of water. |
Food | Always take this medication with food to reduce nausea. |
Timing | Take at the same time every day to maintain consistency. |
Missed Dose | Take as soon as possible, unless the next dose is near. |
14-Day Rule | If you miss 14 or more days, call your care team before restarting. |
Patients should never share this medication with others, as it is specifically prescribed based on individual health needs, including kidney and liver function. [1]
What safety precautions apply to pirfenidone?
Pirfenidone significantly increases the skin's sensitivity to ultraviolet (UV) light. This means that even brief periods of sun exposure can lead to severe skin reactions. Patients are advised to stay out of the sun whenever possible and to take active measures to protect their skin when outdoors. [1]
Sun Safety Checklist:
Wear protective clothing, including wide-brimmed hats and long sleeves.
Apply high-SPF sunscreen to all exposed skin.
Avoid the use of sun lamps or tanning beds.
Notify your care team immediately if you notice a red or purple rash. [1]
Tobacco use is another critical factor. Smoking can interfere with how pirfenidone is processed by the body, potentially making the medication less effective. Patients who smoke should discuss their habit with their care team and notify them if they decide to quit, as dosage adjustments may be necessary. [1]
What side effects of pirfenidone need monitoring?
Pirfenidone can cause side effects ranging from mild digestive issues to serious liver complications. Regular check-ups and blood tests are necessary to monitor liver health and ensure the medication is being tolerated well. [1]
"Serious skin reactions can happen weeks to months after starting the medication. Contact your care team right away if you notice fevers or flu-like symptoms with a rash." [1]
Side Effects to Report Immediately:
Liver Injury: Pain in the right upper abdomen, dark urine, or yellowing of the skin and eyes (jaundice).
Allergic Reactions: Hives, swelling of the face, or difficulty swallowing.
Skin Changes: Blistering, peeling, or loosening of the skin, especially inside the mouth.
Flu-like Symptoms: Fever accompanied by a persistent rash or swollen lymph nodes. [1]
Common side effects that may not require immediate medical attention unless they persist include diarrhea, dizziness, fatigue, and stomach pain. Taking the medication with food is the most effective way to manage these common issues. [1]
How should pirfenidone be stored and disposed of?
Proper storage ensures the medication remains stable and effective. Pirfenidone should be kept at room temperature, specifically between 15 and 30 degrees C (59 and 86 degrees F), and stored in a location that is inaccessible to children and pets. [1]
When the medication is no longer needed or has expired, it should be disposed of safely. The preferred method is through a medication take-back program at a local pharmacy or law enforcement agency. If a take-back program is unavailable, patients can mix the medication with an undesirable substance like cat litter or coffee grounds, seal it in a bag, and place it in the household trash. [1]
Conclusion
Pirfenidone is a vital medication for slowing the progression of pulmonary fibrosis and improving quality of life. By adhering to dosage schedules, practicing strict sun safety, and monitoring for liver-related side effects, patients can maximize the benefits of their treatment. Consistent communication with a healthcare team is the key to managing this chronic condition effectively.
Frequently Asked Questions
Can I take Pirfenidone on an empty stomach?
No. It is highly recommended to take this medication with food. This helps reduce the risk of common side effects like nausea and stomach pain.
What should I do if I miss a dose?
Take the missed dose as soon as you remember. However, if it is almost time for your next dose, skip the missed one and continue your regular schedule. Do not take a double dose.
Why do I need to call my doctor if I miss 14 days of medication?
Missing 14 or more days requires a consultation with your care team to ensure it is safe to restart the medication and to determine if a different starting dose is needed.
Is it safe to use a tanning bed while taking Pirfenidone?
No. This medication makes your skin extremely sensitive to UV light. You must avoid tanning beds, sun lamps, and direct sunlight as much as possible.
Can smoking affect my treatment?
Yes. Tobacco use can decrease the effectiveness of the medication. Inform your care team if you smoke or if you plan to quit smoking during your treatment.
What are the signs of liver problems I should watch for?
Watch for dark-colored urine, yellowing of the skin or eyes, right-sided abdominal pain, and unusual fatigue. Report these to your doctor immediately.
How long does it take for serious skin reactions to appear?
Serious skin reactions can develop weeks or even months after you first start taking the medication. Always be vigilant about new rashes or blisters.
Can children take Pirfenidone?
The use of this medication in children requires special care and consultation with a pediatric specialist. Talk to your care team for specific guidance.
What should I do with expired tablets?
Do not take expired medication. Use a local medication take-back program or follow safe household disposal methods like mixing the tablets with cat litter before trashing them.
Are there medications I should avoid while taking Pirfenidone?
Several drugs can interact with pirfenidone, including certain antibiotics (ciprofloxacin) and asthma medications. Always provide your care team with a full list of your current medicines.
References
Cleveland Clinic. Pirfenidone Capsules or Tablets. Cleveland Clinic Health Library. Accessed October 11, 2026. https://my.clevelandclinic.org/health/drugs/20409-pirfenidone-capsules-or-tablets
Singh P, Thampi G, Gupta K, et al. Clinical efficacy and safety evaluation of drug therapies for the treatment of progressive fibrotic-interstitial lung diseases (PF-ILDs): a network meta-analysis of randomized controlled trials. Expert Rev Clin Immunol. 2025;21(8):1135-1170. PMID: 40754799. DOI: 10.1080/1744666X.2025.2543473
Chong WH, Agrawal D, Tan ZY, et al. A systematic review and meta-analysis of the clinical benefits and adverse reactions of anti-fibrotics in non-IPF progressive fibrosing ILD. Heart Lung. 2024;68:242-253. PMID: 39089077. DOI: 10.1016/j.hrtlng.2024.07.010
Yang X, Wang Y, Qiaolongbatu X, et al. Gastrointestinal and skin safety evaluation of pirfenidone versus nintedanib: an analysis of real-world pharmacovigilance and randomized controlled trials. Naunyn Schmiedebergs Arch Pharmacol. 2026 Sep 19. PMID: 42760377. DOI: 10.1007/s00210-026-05872-y
Medical disclaimer
This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
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