The strips are in a tin on the shelf. Some are from this month, some from a hospital bag last year, and one belongs to a brother who left it behind. In a shared house, that tin is where mistakes start. The World Health Organization's medication safety work treats wrong medicines, wrong timing, and poor communication as preventable harm. At the kitchen table the safeguard is plain: the right person, the right strip, the right time.

Read the name on the strip before it leaves the tin. Read the person's name on the packet if the pharmacy wrote it there. Many tablets are white and round. Colour and size mislead, so read the printed name.

The right person and the right strip

Do not use someone else's medicine. A blood pressure tablet, a diabetes tablet, a steroid, or a painkiller that suited a relative can be dangerous for the person in front of you. Similar brand names are a known trap. If two boxes look alike, keep them in different tins and ask the pharmacist to mark them in large letters.

Match the time to the instruction: morning, with food, at night, or a gap from another drug. If a dose is missed, use the advice that came with that medicine or ask the pharmacy. Do not double the next dose unless that instruction says so.

Older adults often have more than one prescriber, and the list drifts. A calmer way to line up a week's medicines, including what to do when swallows are difficult, is described in medication management for older adults. If a nurse is giving doses in the house, they need the same list the family uses. A second list in a private notebook leads to double doses.

Antibiotics are a special case. Finish the course if that is what was prescribed, or stop if the prescriber has told you to stop. Do not save the last few tablets for "next time." Do not start an old strip because a cough sounds familiar. If a side effect is severe, call before you invent a plan to stop. Some medicines are unsafe to stop suddenly. Ask, rather than pausing a strip over a weekend to see how the person feels.

Allergies, questions, and pain tablets

Write allergies on the clinic paper and say them at the pharmacy. Include rashes and swelling. A dislike of the taste can be noted separately. If the person once reacted to a medicine and nobody remembers the name, bring the old packet or the discharge sheet where it might be written.

Pharmacist questions are legitimate. Asking whether a new pain tablet clashes with a blood thinner, or whether a syrup contains sugar, is part of safe care. You do not need a new diagnosis to ask. Bring the list, or a photo of each strip that shows the name and strength.

Pain tablets bought for a backache can affect kidneys, stomach, and blood pressure. People with kidney disease should ask a doctor or pharmacist before buying them. That caution, and the fluid plan that often sits with it, is explained in chronic kidney disease at home.

Damp, heat, and the cupboard

Damp storage ruins tablets. A bathroom shelf, a kitchen ledge above the boiling dal, and a tin that survived monsoon with the lid loose are poor homes for medicine. Tablets that are cracked, stuck together, discoloured, or softer than they were should not be used. Ask the pharmacy for a replacement rather than snapping off the damaged ones.

Keep medicines out of reach of children, including iron and sweet syrups, which are a serious poisoning risk if a child finishes the bottle. A high cupboard is better than a handbag on the floor.

Check dates once a month. Return leftovers you will not use to the pharmacy if they accept them. Do not flush a pile of tablets or throw them into a courtyard where a child or a dog can find them, if a pharmacy return is available. If it is not, ask the pharmacist how they want expired stock handled locally.

When a new prescription arrives after hospital, put the new strips next to the old ones and reconcile them before the first home dose. Two people should not give both the hospital brand and the old brand of the same drug. That check is the centre of a safe first evening home.