What Helps With a Cold — Comfort, Not a Cure

There is no reliable way to cut a cold short — that is the honest starting point. Everything below works on symptoms, not the virus.

When to see a doctor

Right away, on the local emergency number (911 in the US and Canada, 999 in the UK, 112 in the EU and Russia, where 103 also reaches an ambulance): trouble breathing or shortness of breath; pain or pressure in the chest or abdomen; confusion or being impossible to wake; seizures; no urine; severe muscle pain or weakness; fever or cough that improved, then came back or got worse; a chronic condition flaring up. In a child, also ribs pulling in when breathing, bluish lips, dehydration, fever above 40 °C that will not come down, any fever in a baby under twelve weeks, a non-blanching rash, a stiff neck, or drowsiness hard to break through (CDC, US; NHS, UK — the lists are not exhaustive).

The same day: fever longer than four days (CDC, US) or three (NHS, UK); ten days of symptoms without improvement; severe facial pain or headache; signs of dehydration. In a child: 38 °C under three months (NHS, UK), 39 °C at three to six months, fever five days or more, a rash with fever, refusal to eat or drink, dry diapers.

Routine: a cough past three weeks; sinus infections that keep returning; a chronic illness or weak immunity worth planning the season around.

What is happening

A cold usually runs less than a week (CDC); the NHS (UK) describes improvement over one to two weeks, longer in small children. A cough is the slowest part: up to three weeks happens, and longer is worth checking (NHS, UK).

The fever, the aching and the blocked nose are largely your immune response at work, which is why comfort measures aim at how you feel, not at the numbers. Antibiotics change nothing here: they act on bacteria, not viruses, and do not make a cold milder or shorter (CDC, NHS) — more in antibiotics and colds.

What to do

Rest. Worth it for how you feel and to keep from passing the virus on — but it does not change the outcome: nothing shows early rest turns a week into a day.
Fluids: enough, not maximum. Drink so you do not get dehydrated, not "more than usual": no trials support "drink more" here, and observational data in lower respiratory infections hint at possible harm from excess (Cochrane).
Warm drinks and honey. The NHS (UK) rates hot lemon and honey about as useful as an over-the-counter cough syrup; honey probably beats placebo for cough (Cochrane), but never under one year.
Saline nose rinses. They ease a blocked nose; the water is the safety part — distilled, sterile, or boiled three to five minutes and cooled, or filtered for microorganisms. Not tap water: the FDA (US) links it to rare fatal amoebic infections.
Comfortable air. A clean humidifier makes dry indoor air kinder to an irritated nose; whether it changes your chance of catching something is not well established.
Paracetamol or ibuprofen, by the label, for discomfort — not to drive a number down. The NHS (UK) calls 38 °C and above fever in an adult, alongside rest and fluids.
Children. Paracetamol or ibuprofen if the child feels unwell, not alternated or combined without a doctor. No paracetamol under two months; no ibuprofen under three months or 5 kg, none with chickenpox or dehydration, with asthma only on a doctor's advice. No aspirin under 16 in the UK (18 in the US) — Reye's syndrome. Do not undress, sponge or bundle up a feverish child; fever reducers do not prevent febrile seizures (NHS). Over-the-counter cough and cold medicines are not advised under six (CDC, US; NHS, UK); limits differ elsewhere, read the package.
Pregnancy. From week 20, ibuprofen and other NSAIDs need a doctor's say-so: the FDA (US) links them to low amniotic fluid and fetal kidney injury (earlier the warning began at week 30). Paracetamol is preferred.
Decongestant sprays and drops. Follow your product's label. The NHS (UK) says five days in a row at most, or congestion rebounds harder; none under six, the same limit at six to eleven; with high blood pressure, diabetes, glaucoma, heart disease, pregnancy or breastfeeding, ask a doctor or pharmacist first. Labels elsewhere give three to seven days.
Cold powders with phenylephrine. In November 2024 the FDA (US) proposed removing oral phenylephrine from over-the-counter products as ineffective at the accepted dose — a procedure, not a finished ban, and not about safety or nasal sprays. Common in combination sachets — read the ingredients.

When this is not the case

Supplements, home remedies and pharmacy "antivirals" are a separate question with uneven evidence — see what the evidence says about cold remedies. In a risk group (65 and older, small children, pregnancy, chronic illness, weakened immunity, disability with underlying conditions, BMI of 40 or more) symptoms alone are a reason to contact a doctor early, not to work down this list (CDC). On day one, the first signs of a cold is shorter.

Sources

Checked: September 6, 2026