Skip to content

Buy it in September, thank yourself in January.

Nobody shops well with a fever. A small shelf of the right things makes the bad week easier.

The shelf

A digital thermometer, plain paracetamol or ibuprofen, saline spray for blocked noses, oral rehydration salts, honey for coughs, and tissues. That short list handles the honest treatment of most colds and flu, which is comfort while your immune system does the work.

What to skip

Vitamin C megadoses do not prevent colds. Echinacea, zinc lozenges and most combination cold-and-flu formulas add little beyond the plain painkiller already in them, at several times the price. Antibiotics do nothing against these viruses at all.

When a cold is something more

Trouble breathing, chest pain, fever above 39.4 C that will not settle, confusion, a stiff neck with rash, or symptoms that improve then sharply worsen: those need a doctor promptly, not the shelf. For everyone at higher risk, the yearly flu vaccine remains the one genuine prevention on offer.

If you are buying a thermometer

A basic digital stick thermometer is accurate and costs a few dollars. Forehead scanners are fine for quick checks on children; ear thermometers need good technique to read true.

See digital thermometers

For congestion and allergies

Plain saline rinses are safe, drug-free and genuinely effective for blocked noses and allergy season, on their own or alongside other treatments.

See saline sprays

Common questions

What actually shortens a cold?
Almost nothing shortens it meaningfully; rest, fluids and time do the healing. Treatment is about comfort: painkillers for aches and fever, saline for the nose, honey for the cough.
Should I feed a cold and starve a fever?
Neither. Eat what you can manage and drink more than usual for both. Fluids matter most with fever, which is where the rehydration salts earn their spot.
When does a cough need a doctor?
When it lasts beyond three weeks, brings blood, comes with breathlessness or chest pain, or pairs with high fever that returns after improving. An ordinary cold cough can drag two to three weeks and still be normal.

Written by the AskDoc Medical Team. We take no money from any brand; picks are what doctors tell patients to look for.

In an emergency, do not use this site. Chest pain, trouble breathing, weakness on one side, trouble speaking, heavy bleeding, serious injury, or thoughts of harming yourself: contact your local emergency service now.