No. Nothing cures a cold, including vitamin C, echinacea, onions in a bowl and the various things that circulate on social media every winter.
What does actually help:
- Rest, fluids and time. A cold lasts about a week whatever you do.
- Painkillers for the aches and the sore throat.
- Steam and saline for the congestion.
- Honey for the cough.
What does not:
- Vitamin C does not prevent colds in the general population and shortens them by an amount too small to notice.
- Antibiotics do nothing to a virus and should not be requested for one.
- Onions in a bowl, garlic necklaces and the rest are folklore with no mechanism.
See a doctor if a cold comes with chest pain, breathlessness, a very high temperature that will not come down, confusion, or symptoms that get worse after improving, which can indicate a secondary infection.
A cold is a viral infection that your immune system clears over roughly a week. Nothing available over a counter shortens that meaningfully, which is why almost every remedy is aimed at symptoms rather than at the illness.
This is general information, not medical advice, and it does not replace a GP, a pharmacist or NHS 111. Call 999 in an emergency. Full disclaimer.