Most of us have swallowed a painkiller without giving it a second thought. Headache? Paracetamol. Period pain? Ibuprofen. Back ache? Whatever is in the cabinet. Painkillers are among the most commonly used medicines in the world, and for good reason: they work. When used correctly, they genuinely improve quality of life. But they also carry risks that most people underestimate, and habits that start innocently can quietly become dangerous. Understanding how painkillers work, and where they can go wrong, is something everyone deserves to know.
What Painkillers Are and How They Work
Painkillers, also called analgesics, are drugs that reduce or eliminate pain. They do not all work the same way, and that difference matters.
There are four main types most people will encounter.
Paracetamol (also called acetaminophen): The most widely used painkiller in the world. It reduces pain and fever by acting on the brain's perception of pain. It does not reduce inflammation. It is safe at the correct dose but becomes seriously dangerous in excess, even a modest overdose can destroy the liver.
NSAIDs (Non-Steroidal Anti-Inflammatory Drugs): This group includes ibuprofen, diclofenac, and aspirin. They relieve pain and reduce inflammation by blocking chemicals in the body called prostaglandins. Because prostaglandins are also responsible for protecting the stomach lining and kidneys, blocking them long-term causes problems in those organs.
Opioids: These are stronger painkillers including codeine, tramadol, and morphine. They work by binding to receptors in the brain and spinal cord, blocking pain signals and producing a sense of calm and relief. That feeling of calm is also what makes them highly addictive.
Combination drugs: Some medications blend two or more of the above, such as paracetamol combined with codeine. These are stronger but carry the risks of both ingredients, which many people do not realise when they take them.
Ama buys a cold and flu remedy from the pharmacy and takes it three times a day as directed. She also takes two paracetamol tablets separately because her headache is not clearing. What she does not know is that the cold remedy already contains paracetamol. She is now taking double the safe daily dose without realising it. This is one of the most common causes of accidental paracetamol overdose, not recklessness, but simply not reading the label.
The Dark Side of Common Painkillers
Paracetamol and the Liver
Paracetamol is widely trusted because it is gentle on the stomach and available without a prescription. This reputation for safety leads many people to assume more is better when the recommended dose is not working fast enough. That assumption is dangerous.
The safe daily limit for a healthy adult is 4 grams, which is typically four standard tablets spaced throughout the day. Going significantly above this, especially combined with alcohol or liver disease, causes a chemical reaction in the liver that produces a toxic byproduct. The liver begins to break down from the inside.
The most alarming part: the symptoms of paracetamol overdose, nausea, fatigue, and abdominal discomfort, often do not appear until 24 to 72 hours later, by which time severe liver damage may already have occurred. People sometimes feel fine initially and delay seeking help, not knowing the damage is already underway.
Kofi, 35, had a severe migraine that was not responding to two paracetamol tablets. Over the course of a day, he took extra doses, telling himself it was just one more. He felt no immediate ill effects. Two days later, he was admitted to hospital with acute liver injury. His doctor explained that his total intake over 24 hours had pushed well past the toxic threshold. He recovered, but it was close. He had not intended to overdose. He simply did not know where the line was.
NSAIDs and the Stomach and Kidneys
NSAIDs like ibuprofen and diclofenac are effective for pain related to inflammation, such as joint pain, muscle injuries, menstrual cramps, and dental pain. The problem is that prostaglandins, the chemicals they block, also serve a protective function in the body. In the stomach, they maintain the protective mucus lining. In the kidneys, they help regulate blood flow.
Long-term or high-dose NSAID use can cause stomach ulcers, internal bleeding in the digestive tract, and kidney damage. People with existing kidney disease, high blood pressure, or heart conditions are at significantly higher risk. Taking NSAIDs on an empty stomach, or combining two different NSAIDs at the same time, dramatically increases the danger.
Adjoa, 52, had chronic knee pain and had been taking ibuprofen daily for months, buying it over the counter without a prescription. She began experiencing dark, tarry stools and abdominal pain. At hospital, she was found to have a bleeding stomach ulcer caused by long-term NSAID use. She had not told any doctor she was taking ibuprofen because she considered it "just a painkiller, not a real medicine." Her ulcer required hospitalisation and several weeks of treatment to heal.
Opioids and Dependence
Opioids such as tramadol, codeine, and morphine are powerful and genuinely necessary for severe pain, such as after major surgery, serious injury, or in cancer care. The issue arises when they are used outside these situations, taken for longer than needed, or accessed without proper medical supervision.
Opioids activate the brain's reward system, the same system involved in pleasure and motivation. They do not just relieve pain; they produce a distinct sense of warmth, calm, and wellbeing. Over time, the brain adapts to their presence and stops producing its own feel-good chemicals at the same level. The person needs the drug just to feel normal. Stopping suddenly causes withdrawal: sweating, agitation, muscle aches, insomnia, and intense cravings. This is dependence, and it can happen even to people who began taking opioids legitimately for pain.
In Ghana and across West Africa, tramadol misuse in particular has become a growing public health concern, with young people in some communities using it recreationally at doses far above what is medically recommended.
Yaw, 28, was prescribed tramadol after a motorbike accident. The pain was genuinely severe and the medication helped him sleep and function during recovery. But after his injury healed, he continued taking it. Without it, he felt anxious, irritable, and could not sleep. He started buying it from unlicensed sellers to avoid running out. What began as legitimate pain management had quietly become dependence. It took a structured withdrawal programme under medical supervision to help him stop.
Masking a Bigger Problem
One of the most underappreciated risks of painkillers is not what they do to the body directly, but what they allow you to ignore. Pain is a signal. It is the body's way of communicating that something needs attention. Taking painkillers to silence that signal without investigating the cause is like switching off a warning light on your car dashboard and driving on. The light stops flashing, but the problem underneath does not go away. It often gets worse.
Serious conditions, including appendicitis, kidney stones, fractures, internal bleeding, and infections, can be masked by painkillers long enough for them to progress from treatable to life-threatening.
Efua, 44, had persistent abdominal pain that she managed with ibuprofen for two weeks, assuming it was menstrual or digestive. When the pain became unbearable despite the medication, she finally went to hospital. She had a ruptured ovarian cyst that required emergency surgery. Her surgeon noted that regular anti-inflammatory use had reduced the pain signals enough for her to delay seeking care, allowing the condition to worsen significantly before she came in.
Signs That Your Painkiller Use Has Become a Problem
Painkiller misuse does not always look dramatic. It often develops gradually, through habits that feel entirely reasonable at the time. These are signs worth taking seriously.
You take painkillers for emotional discomfort or low mood, not just physical pain. You find yourself needing a higher dose to get the same relief you used to get from one or two tablets. You feel anxious, irritable, or unable to function when you do not take them. You are taking them every day, or near-daily, without a doctor's guidance. You are buying them without a prescription from pharmacies or unlicensed sellers. You are hiding how much you take from family members or healthcare providers.
If any of these feel familiar, that is worth an honest conversation with a doctor. Dependence is a medical condition, not a moral failure. It responds to treatment.
How to Use Painkillers Safely
These guidelines apply to everyone, whether you take painkillers occasionally or regularly.
Read the label before you take anything. Check whether what you are about to take contains paracetamol, and whether any other medication you are taking also contains it. Doubling up is one of the most common causes of accidental overdose.
Stick to the recommended dose. If the dose on the packet is not relieving your pain, the answer is not to take more. It is to speak to a doctor or pharmacist about whether a different approach is needed.
Take NSAIDs with food. Ibuprofen and diclofenac irritate the stomach lining. Always take them with a meal or a glass of milk to reduce the risk of ulcers.
Do not mix painkillers without advice. Combining two NSAIDs, or taking multiple products containing paracetamol, can push you into dangerous territory very quickly.
Avoid alcohol when taking painkillers. Alcohol significantly increases the risk of liver damage with paracetamol and stomach bleeding with NSAIDs.
Opioids are not for everyday pain. If you have been prescribed tramadol or codeine, take them only as directed, only for as long as directed, and return to your doctor if you feel you need them beyond the prescribed course.
Tell your doctor everything you are taking. This includes over-the-counter medicines, herbal remedies, and supplements. Interactions can be serious and are often entirely preventable.
Nana, 47, started keeping a simple note on her phone listing every medication she takes, including her blood pressure tablet, the ibuprofen she uses occasionally for back pain, and any cold remedies. When she visits her doctor or pharmacy, she shows the list. Her pharmacist once spotted that a newly prescribed medication would interact dangerously with her regular ibuprofen use and suggested a safer alternative. That note cost her nothing and may have prevented serious harm.
When Painkillers Are Not the Answer
For many types of pain, non-drug approaches are not just alternatives: they are often more effective in the long run, particularly for chronic pain.
Exercise and targeted stretching are among the most evidence-based treatments for lower back pain and joint pain, outperforming painkillers in long-term outcomes. Hot and cold compresses help manage localised inflammation and muscle spasms. Adequate sleep allows the body to carry out its natural repair processes, and sleep deprivation significantly lowers pain tolerance. Physiotherapy addresses the structural causes of pain rather than masking the symptom. Relaxation techniques including deep breathing, mindfulness, and meditation reduce the stress that often amplifies pain perception. Staying well hydrated supports muscle function and reduces the frequency of headaches.
None of these put the liver, kidneys, or stomach at risk. None of them carry a dependence profile. For ongoing pain, they are worth exploring seriously with a healthcare provider before reaching for a pill as the first and only response.