When pain strikes, many people reach for whatever painkiller happens to be at home. But painkillers are not all the same. Each type works differently, suits different conditions, and comes with its own precautions. In this article, the team at We Care Pharmacy explains the differences between the most common painkillers and when to choose each one, so you can get better relief more safely.
1. Paracetamol
Common brand names: Panadol, Cetal, Adol
What is it? A mild to moderate pain reliever and fever reducer, with very little anti-inflammatory effect.
When to use it:
- Regular headaches and body aches that come with colds and flu
- Lowering fever in adults and children
- Mild toothache and period pain
- People who can’t tolerate anti-inflammatory painkillers because of stomach problems
Important precautions:
- An overdose can seriously damage the liver, so never exceed the maximum daily dose stated on the leaflet (usually 4 grams per day for healthy adults)
- Watch for paracetamol hidden inside combination cold remedies, as you may end up taking it twice without realizing
2. Ibuprofen
Common brand names: Brufen, Nurofen
What is it? A non-steroidal anti-inflammatory drug (NSAID). It relieves pain, lowers fever, and reduces inflammation.
When to use it:
- Muscle pain, sprains, and bruises
- Toothache and sore throat with inflammation
- Menstrual cramps
- Back and joint pain
Important precautions:
- Best taken with or after food to reduce stomach irritation
- Not suitable for people with stomach ulcers or kidney problems, and should be avoided during pregnancy unless a doctor advises otherwise
- May worsen asthma in some patients
3. Aspirin
What is it? An anti-inflammatory painkiller which, at low doses, also acts as a blood thinner.
When to use it:
- Mild to moderate pain such as headaches and muscle aches
- At low doses, and only when prescribed by a doctor, to help prevent clots in some heart patients
Important precautions:
- Should not be given to children under 16 unless directed by a doctor
- More likely than ibuprofen to cause stomach irritation and bleeding
- Should not be taken with blood-thinning medications unless supervised by a doctor
4. Diclofenac and Naproxen
Common brand names: Cataflam, Voltaren (diclofenac)
These are also NSAIDs, and are often stronger than ibuprofen, so they are commonly used for bone and joint pain and sports injuries. They should be used carefully and for short periods, and it’s best to consult a pharmacist or doctor first, especially if you have stomach, kidney, blood pressure, or heart conditions.
5. Topical Painkillers (Gels and Creams)
Diclofenac or ibuprofen gels are rubbed directly onto the painful area. They’re a good option for the knee, shoulder, and back, and are gentler on the stomach because less of the drug enters the bloodstream.
Quick Comparison Table
| Painkiller | Pain Relief | Fever Reducer | Anti-inflammatory | Best For |
| Paracetamol | ✔ | ✔ | Very weak | Headaches, fever, cold aches |
| Ibuprofen | ✔ | ✔ | ✔ | Muscles, teeth, period pain |
| Aspirin | ✔ | ✔ | ✔ | Mild pain in adults; blood thinner when prescribed |
| Diclofenac | ✔ | ✔ | ✔✔ | Joints, injuries |
Can You Combine More Than One Painkiller?
Combining paracetamol with an anti-inflammatory can help in some cases, but there is one firm rule: never combine two anti-inflammatory painkillers (such as ibuprofen with diclofenac or aspirin), because it multiplies the risk of bleeding and of stomach and kidney problems. Always ask your pharmacist before combining any two medications.
When Should You Stop Painkillers and See a Doctor?
- Pain lasts more than 3 to 5 days despite taking a painkiller
- Sudden, severe pain in the chest, abdomen, or head
- High fever that won’t come down, or a skin rash or difficulty breathing after taking the medication
- You find yourself needing painkillers daily or repeatedly
Painkillers for Special Groups
- Pregnant and breastfeeding women: Paracetamol is usually the first choice, and a doctor should be consulted before any other painkiller
- Children: Doses are calculated by weight, and aspirin should not be given to children under 16
- Elderly people and those with blood pressure, diabetes, or kidney conditions: Anti-inflammatory painkillers may not be suitable, so consult a pharmacist or doctor first
A Trusted Source for More Information
For more details on the differences between common painkillers such as paracetamol, ibuprofen, and aspirin, see the patient guide to pain relief from the UK’s National Health Service (NHS).
Frequently Asked Questions
Is paracetamol safer than ibuprofen?
It is generally gentler on the stomach, but it is not anti-inflammatory and can harm the liver if the dose is exceeded. The right choice depends on the cause of your pain and your health condition.
Should I take painkillers on an empty stomach?
Paracetamol is usually fine, but ibuprofen, aspirin, and diclofenac are best taken after eating.
How many times a day can I take a painkiller?
Always follow the dose and time interval written on the leaflet or prescribed by your pharmacist or doctor.
Conclusion
Choosing the right painkiller depends on the type of pain, your health condition, and your other medications, not on whichever box happens to be in the drawer. To learn more, read our article: 7 Common Antibiotic Myths You Need to Stop Believing, and browse the pain relief and anti-inflammatory section at We Care Pharmacy or ask our pharmacists directly. They’re always available to help, whether at your nearest branch or through our delivery service.