At the first sign of a scratchy throat or runny nose, you have a short window to reduce how bad your cold gets and how long it lasts. Most colds peak within two to three days of infection and clear up in under a week, so acting quickly matters more than acting perfectly. Here’s what actually helps.
Recognize the Early Signs
The first symptoms people notice are usually a sore or scratchy throat, sneezing, and a runny nose. These can progress to nasal congestion, cough, headache, mild body aches, and sometimes a low-grade fever. If you’re feeling that telltale tickle or unusual fatigue, your immune system is already responding to the virus, and the steps below work best when started immediately.
Start Zinc Lozenges Right Away
Zinc is one of the few supplements with solid evidence behind it for colds, but timing is everything. You need to start within the first 24 hours of symptoms. A meta-analysis of seven trials found that zinc lozenges shortened colds by about 33% on average, with zinc acetate lozenges reducing duration by roughly 40%. Doses in the range of 80 to 92 mg per day were just as effective as higher doses, so there’s no benefit to megadosing.
Look for zinc acetate or zinc gluconate lozenges at any pharmacy. Let them dissolve slowly in your mouth rather than chewing them, since the zinc needs contact time with the throat and nasal passages. Some people experience nausea from zinc on an empty stomach, so having a small snack beforehand can help.
Rinse Your Nose With Saline
Saline nasal irrigation does more than relieve stuffiness. It physically flushes viral particles out of your nasal passages and can meaningfully reduce viral load. In one study of respiratory virus patients, those who started saline rinses immediately cleared the virus at dramatically higher rates: 91% were virus-free by day 10 compared to just 28% of those who didn’t rinse. Rinsing twice daily was significantly more effective than once daily.
You can use a neti pot, squeeze bottle, or pre-filled saline spray. Use distilled or previously boiled water (never tap water) mixed with salt, or buy pre-made saline packets. Aim for at least twice a day, and don’t be discouraged if it feels awkward the first time.
Prioritize Sleep Over Everything Else
Your immune system does its heaviest work during sleep. The proteins your body produces to fight infection are regulated by your sleep cycle, and cutting sleep short directly weakens your ability to clear a virus. When you feel a cold coming on, this is the single most important lifestyle change you can make: get to bed early, aim for at least seven to eight hours, and nap during the day if you can. Cancel evening plans. Skip the workout. Your body is telling you to rest for a reason.
Use Honey for a Sore Throat and Cough
Honey consistently outperforms standard care for upper respiratory symptoms, particularly cough frequency and severity. A systematic review of 14 studies found it reduced both cough frequency and cough severity compared to usual treatment, and it improved overall symptom scores. A spoonful of honey straight, or stirred into warm (not boiling) water or tea, coats the throat and provides genuine relief. This applies to adults and children over one year old only.
Keep Your Air Humid
Dry indoor air does two things that work against you: it helps cold viruses survive longer on surfaces and in the air, and it dries out your mucous membranes, which are your first line of defense. The optimal indoor humidity range is 40 to 60%. Below 50%, many common respiratory viruses become more stable and transmissible. Low humidity also triggers indoor ozone formation, which further irritates your nose, throat, and eyes.
A simple cool-mist humidifier in your bedroom can make a noticeable difference, especially in winter when heating systems dry out indoor air. If you don’t have one, spending time in a steamy bathroom or draping a warm, damp towel near your bed are rough substitutes.
What About Vitamin C?
Despite its reputation, vitamin C taken after symptoms start has not shown consistent benefits. A Cochrane review found that high therapeutic doses begun at symptom onset did not reliably shorten colds or reduce severity. One large trial did show benefit from an 8-gram dose taken right at the start, but this was an outlier rather than a pattern. Regular daily supplementation (before you get sick) may modestly reduce cold duration in children, shortening it by about 18% at doses of 1 to 2 grams per day. But if you’re already feeling symptoms, loading up on vitamin C is unlikely to change much.
Consider Elderberry
Elderberry has some promising evidence, though it’s more limited. In one randomized, placebo-controlled trial of air travelers, elderberry supplementation shortened colds by about two days (roughly 4.75 days versus nearly 7 days with placebo) and reduced overall symptom severity. The participants in that study started taking elderberry before they got sick, which may matter. Elderberry syrup or capsules are widely available and generally well-tolerated, making them a reasonable addition to your plan, though the evidence isn’t as robust as it is for zinc.
Drink Fluids, but Don’t Force Them
The classic advice to “drink lots of fluids” when you’re sick is surprisingly lacking in evidence. No randomized controlled trials have actually tested whether increasing fluid intake improves recovery from respiratory infections. The advice is usually vague (“drink more than normal”) and comes with a real, if small, risk: overhydrating during illness can dilute blood sodium levels, potentially causing headaches, confusion, or worse.
The practical takeaway is to stay normally hydrated. Drink when you’re thirsty, sip warm liquids if they soothe your throat, and don’t panic about hitting some arbitrary water target. Warm broth, tea with honey, and water are all fine choices. If you have a fever, you’ll naturally need a bit more fluid to replace what you lose through sweat.
Know When It’s More Than a Cold
Most colds resolve on their own within a week. But certain signs suggest something more serious, like a bacterial infection or the flu. For adults, watch for symptoms that keep getting worse instead of improving, or a fever above 101.3°F (38.5°C) that persists for more than three days. For children, a fever of 100.4°F (38°C) in newborns up to 12 weeks needs immediate attention, as does a fever lasting more than two days in any child. Increasing difficulty breathing, wheezing, ear pain, or intense headache and throat pain in children also warrant a call to your doctor.