What Are NSAIDs And How Do They Work?

What Are Non-Steroidal Anti-Inflammatory Drugs?

Non-steroidal anti-inflammatory drugs, often abbreviated as NSAIDs, are a widely used class of medications. These drugs are primarily taken to alleviate fever, reduce inflammation, and relieve mild to moderate pain.

In physiotherapy settings, Non-Steroidal Anti-Inflammatory Drugs are frequently recommended for managing common conditions such as headaches, muscle soreness, arthritis, and various sports-related injuries. Due to their anti-inflammatory properties, they play a critical role in helping patients manage pain and swelling during rehabilitation. Many over-the-counter NSAIDs, such as ibuprofen and naproxen, are easily accessible and form part of many people’s self-care routines.

How Do NSAIDs Work?

NSAIDs work by inhibiting cyclooxygenase (COX) enzymes, specifically COX-1 and COX-2. These enzymes are responsible for producing prostaglandins, which are hormone-like substances that play several roles in the body. Prostaglandins trigger inflammation and pain as part of the body’s natural healing response. However, they also protect the stomach lining from acid and assist in blood clotting.

By blocking COX enzymes, NSAIDs reduce the production of prostaglandins, which helps alleviate pain, fever, and inflammation. While this mechanism can be highly effective, it also reduces the protective functions of prostaglandins. As a result, long-term or excessive NSAID use can lead to complications such as gastrointestinal irritation, stomach ulcers, and increased bleeding risk.

Research from the National Institutes of Health emphasizes the importance of balancing Non-Steroidal Anti-Inflammatory Drugs use to limit these side effects while achieving effective pain relief.

What Are The Potential Side Effects of Taking NSAIDs?

Although NSAIDs are generally safe for short-term use in healthy individuals, they can carry significant risks—especially for older adults or people with chronic health conditions. Numerous studies, including findings published in the British Medical Journal (BMJ), have linked NSAID use with an elevated risk of cardiovascular events such as heart attacks and strokes.

Several factors influence the degree of risk:

• Dosage, Frequency, and Duration: Lower doses taken occasionally pose less risk than higher doses taken regularly over extended periods.
• Age: Younger individuals typically have a lower baseline risk for stroke or heart complications.
• Overall Health: Conditions like high blood pressure, high cholesterol, diabetes, and smoking habits increase vulnerability to cardiovascular side effects.

Besides the potential for increased stroke and heart attack risk, Non-Steroidal Anti-Inflammatory Drugs can significantly impact the gastrointestinal tract. Adverse effects range from minor issues like heartburn and nausea to serious complications including stomach ulcers, internal bleeding, or perforation of the stomach and intestines. Additional common side effects of NSAIDs include:

• Nausea
• Constipation
• Reduced appetite
• Skin rash
• Dizziness
• Headache
• Drowsiness
• Fluid retention
• Kidney damage (particularly with long-term use)
• Liver damage
• Delayed blood clotting, especially after injuries or surgery

Some people may also experience allergic reactions to NSAIDs. Individuals with asthma are at a higher risk and may develop serious respiratory symptoms, including shortness of breath, after taking these medications.

If you experience any unusual or severe side effects while using NSAIDs, contact your doctor immediately. Report any symptoms not listed above to your healthcare provider or pharmacist.

Do NSAIDs Interact With Other Medications?

Yes, NSAIDs can interact with various medications and may complicate existing health conditions. Here are some key considerations:

• NSAIDs reduce blood flow to the kidneys, which can interfere with the effectiveness of diuretics.
• They reduce blood clotting ability. When taken with anticoagulants like warfarin, the risk of bleeding increases significantly.
• NSAIDs may raise blood pressure. For individuals with hypertension, this could undermine the effects of blood pressure medications.
• Frequent alcohol consumption while taking NSAIDs raises the risk of gastrointestinal bleeding and ulcers.

To avoid harmful interactions, always consult your doctor or pharmacist before starting NSAIDs—especially if you are taking other medications or managing a chronic condition.

Please Note: Sydney physiotherapists are not licensed to prescribe NSAIDs or any pharmaceutical medications.

Disclaimer: The information provided by Sydney Physio Clinic is intended for educational purposes only. It should not be considered medical advice. If you have questions about NSAIDs or how they affect your health, consult your general practitioner, sports physician, orthopedic surgeon, or pharmacist for tailored guidance.