Medication Safety at Home: A Practical Guide
Learn how to take, store, and manage medications safely at home, including common drug interactions and mistakes to avoid.
Over-the-Counter Medication — Common Mistakes
Many people don't realise that over-the-counter medications can be dangerous if used incorrectly. The most common mistakes: exceeding the recommended dose of paracetamol — for most adults the maximum is eight 500mg tablets (4g) in 24 hours, with at least 4 hours between doses. If you weigh under 50kg you may need a lower dose, so check with a pharmacist, and do not take paracetamol for more than 3 days unless a doctor tells you to. Taking too much can damage your liver, and because the damage is delayed you can feel completely well at first. Many people unknowingly double-dose because paracetamol is included in cold and flu remedies (Lemsip, Night Nurse, co-codamol) — always check the ingredients. Ibuprofen should be taken with food, and is not suitable for everyone: the NHS says it may not be suitable if you have or have had a stomach ulcer, have asthma or allergies such as hay fever, have chickenpox, have a heart, liver or kidney condition, have problems with blood clotting, have had a stroke, have previously reacted to aspirin or another anti-inflammatory, or are pregnant or trying to get pregnant. Do not take ibuprofen at the same time as another anti-inflammatory such as naproxen or aspirin — this raises the risk of serious side effects like stomach ulcers. Paracetamol can be taken alongside ibuprofen if needed. Codeine-containing painkillers (Nurofen Plus, Solpadeine) can be addictive: if you bought them from a pharmacy, do not take them for more than 3 days, and speak to your pharmacist or GP if you still have pain. They also contain paracetamol or ibuprofen, so they count towards your daily limit of those too.
Safe Storage and Disposal
Proper medication storage ensures effectiveness and prevents accidents. Store medications in a cool, dry place — not the bathroom, where heat and humidity degrade many drugs. Keep all medications out of reach and sight of children — use high shelves or locked cabinets. Child-resistant caps are not child-proof — a determined toddler can open them. Check expiry dates regularly — expired medications may be less effective or potentially harmful. Never take someone else's prescribed medication — it was prescribed for their specific condition, weight, and medical history. To dispose of unused or expired medications, return them to any pharmacy — they have safe disposal systems. Never flush medications or put them in household waste. If you take multiple medications, use a pill organiser and keep an up-to-date list of all your medications (including over-the-counter) to show healthcare professionals.
Drug Interactions to Know About
Certain common combinations can be dangerous. Ibuprofen + blood thinners (warfarin, aspirin) — significantly increases bleeding risk. Antidepressants (SSRIs) + St John's Wort — can cause serotonin syndrome, a potentially life-threatening condition. Statins + grapefruit juice — grapefruit inhibits the enzyme that breaks down statins, potentially causing muscle damage. Blood pressure medication + NSAIDs (ibuprofen, naproxen) — NSAIDs can raise blood pressure and reduce the effectiveness of BP medication. Antihistamines + alcohol — dramatically increases drowsiness and impaired judgement. Always tell your pharmacist about ALL medications you take (including herbal supplements and vitamins) when buying over-the-counter treatments. Use one pharmacy for all your prescriptions — they'll automatically check for interactions. The NHS app shows your current prescriptions and can help track what you're taking.
When to Seek Emergency Help for Medication Issues
If you have taken more paracetamol than the packet says — get help straight away even if you feel completely fine, because liver damage is delayed and there are no early symptoms. Contact NHS 111 immediately and they will tell you whether to go to A&E. Take the packet and any remaining medicine with you. Never assume it is too late — treatment is still given many hours after an overdose. Call 999 or go to A&E immediately if: you experience a severe allergic reaction to medication (difficulty breathing, swelling, rash); someone has taken medication not prescribed for them; a child has ingested any adult medication; or you experience severe side effects like chest pain, difficulty breathing, or collapse after taking medication. For non-emergency medication queries: call NHS 111 for advice out of hours. Your pharmacist is the medication expert — they can advise on side effects, interactions, and whether you need to see a GP. If you've missed a dose of a regular medication, check the patient information leaflet — different drugs have different rules. As a general rule: if it's close to the time of your next dose, skip the missed dose. Never take a double dose.
- medication
- pharmacy
- drug safety
- self-care
Sources and further reading
This page was written from the following published guidance. All links checked 26 August 2026.