Self-Medication and Medicine Safety

Self-medication is a fact of Indian household life, and not all of it is unreasonable. This article looks specifically at what goes wrong with the medicine itself — the wrong choice, the wrong amount, the ingredient taken twice without realising.

The related question of when a symptom needs a doctor rather than a tablet is covered separately.

Related reading: The risks of self-medication

Why this matters

A medicine chosen without professional input is chosen without three things a pharmacist or doctor would automatically consider: what else you are taking, what conditions you have, and whether this medicine is right for this problem. Each of those omissions has a characteristic failure.

What actually goes wrong

Duplicate ingredients

This is the most common and least noticed. Combination cold, flu and pain products frequently contain the same active ingredient under different brand names. Taking two such products together can quietly exceed the safe daily total of a shared ingredient — with paracetamol in particular, exceeding the daily limit can affect the liver, and it is easily done without any intention to overdose.

The defence is simple: read the generic name on every pack, not just the brand.

Wrong medicine for the problem

Antibiotics taken for viral illness are the standard example — most colds, sore throats and flu-like illnesses are viral, and antibiotics do nothing for them while still causing side effects and driving resistance. Similarly, an antacid taken for chest pain that is actually cardiac, or an anti-diarrhoeal taken in an infection where it is unsuitable, can delay proper treatment.

Wrong dose

Children are the group at greatest risk, because paediatric doses are calculated by weight and an adult product cannot simply be halved. Older adults are also at risk, since kidney and liver function change with age and standard adult doses are not always appropriate.

Interactions

A self-chosen medicine does not know what else you take. Common anti-inflammatory painkillers interact with blood thinners, blood pressure medicines and some diabetes medicines. Herbal and Ayurvedic preparations can interact with prescribed treatment too.

Masking and delay

The most consequential risk is the quietest. Effective symptom relief can conceal a condition that needed assessment — persistent acidity managed with antacids for months, or a cough suppressed while its cause goes unexamined. The relief is real; the delay is the harm.

Take extra care with children, pregnancy and breastfeeding, older adults on several medicines, and anyone with kidney, liver or heart disease. In these groups, ask before taking anything new — including something you have taken safely before.

Safer practice

• Read the generic name on every pack and check it against anything else you are taking.
• Keep a written list of all your medicines and supplements, and show it when buying anything new.
• Ask the pharmacist. Checking whether something suits you alongside your existing medicines is free and takes a minute.
• Do not use leftover prescription medicines, and never take one prescribed for someone else.
• Observe the maximum daily dose on the label, and note when you took the last dose.
• Use one product at a time for a symptom rather than several at once.
• Set yourself a limit — if you need an over-the-counter medicine for more than a few days, see a doctor instead of buying more.

When to consult a doctor

See a doctor rather than self-treating if a symptom persists beyond a few days or keeps returning, if you find yourself using an over-the-counter medicine regularly, if you have a fever that will not settle, or if you have unexplained weight loss, persistent pain, a lump or unusual bleeding.

Always ask before self-treating a child, during pregnancy or breastfeeding, in an older adult on multiple medicines, or where kidney, liver or heart disease is known.

Seek emergency care for chest pain, severe breathlessness, sudden weakness or difficulty speaking, severe abdominal pain, persistent vomiting, or signs of a severe allergic reaction. If more than the labelled dose has been taken — particularly of paracetamol — seek medical help immediately even if you feel well, and take the pack with you.