The tickle in your throat, the extra sneeze, the heavy-head feeling at 3 p.m. Most of us react by grabbing every remedy we own. A calmer plan works better, and it starts with the basics.
Written by Vita Globe Editorial Team | Reviewed against CDC guidance, Cochrane reviews and peer-reviewed research
What should you do when you feel a cold coming on?
Slow down, rest, drink fluids and try simple comfort measures like honey, saline and a humidifier[1]. Stay away from others while you have symptoms[2]. If it could be flu or COVID, test early, since antivirals work best when started soon after symptoms begin[1]. Vitamin C started after symptoms appear hasn't shown a consistent benefit[3]; zinc lozenges started early may shorten a cold a little, but the evidence is low-certainty[4].
Caveat: There's no cure for the common cold. Everything here is about comfort, protecting the people around you and not making things worse[1].
Sources: CDC cold care · CDC when sick · Cochrane vitamin C review · Cochrane zinc review · Verified 2026-09-28
In this article
Is it really a cold, or something else?
A cold is a viral infection of the upper airways. Symptoms usually build gradually and tend to peak within two to three days: runny or stuffy nose, sneezing, sore throat, cough, headache and sometimes a low fever[5]. Most are over within about a week.
Flu and COVID-19 can start the same way, but they carry a higher risk of serious illness, and they have treatments that work best early. If you have fever, chills and body aches, or you're at higher risk because of age, pregnancy or a health condition, test and call your healthcare provider[1]. We break down the differences in Cold, Flu or COVID? How to Tell the Difference.
What should you actually do in the first 24 hours?
The unglamorous answer is the right one. CDC's self-care list for colds is short: rest, fluids, a humidifier or steam, saline nasal spray or drops, and honey for anyone over one year old[1]. Here's how that looks in a real day:
- Protect your sleep tonight. Cancel the late plans and go to bed early. Your body does its best work when you let it rest.
- Keep a water bottle within reach. Warm drinks count: tea, broth, warm water with lemon.
- Try honey for a sore throat or cough. A 2021 systematic review found honey improved upper respiratory symptoms, especially cough, compared with usual care[6]. Never give honey to babies under 1.
- Use saline and steam. They're simple, cheap and can make breathing through your nose easier.
- Skip the antibiotics. Colds are viral, and antibiotics don't help you feel better; they can cause side effects[1].
Should you go to work if you're just starting to feel sick?
If you can, stay home. CDC advises staying home and away from others, including people you live with who aren't sick, when you have respiratory virus symptoms. You can get back to normal activities once your symptoms have been improving overall and you've been fever-free, without fever-reducing medicine, for at least 24 hours[2].
For the next five days after that, take extra care: wash your hands often, open windows or improve airflow, keep some distance and consider a well-fitted mask around others[2]. For a fuller guide, see How Long Is a Cold Contagious?
Do vitamin C, zinc or elderberry help once a cold starts?
This is where honesty matters, because a lot of marketing leans on the "take it at the first sign" idea.
| Option | What the research shows at the first sign of a cold |
|---|---|
| Vitamin C | In the Cochrane review, taking vitamin C only after symptoms started showed no consistent effect on how long or how bad colds were[3]. Regular daily intake before you get sick is where the modest benefit showed up. |
| Zinc | A 2024 Cochrane review found zinc may shorten colds by around two days when used as a treatment, but the evidence is low-certainty and zinc caused more side effects like bad taste and nausea[4]. Most of the positive trials used zinc lozenges that dissolve slowly in the mouth[7], which is a different format from a gummy you chew and swallow. |
| Elderberry | Early studies are promising but small. We cover them in Elderberry for Flu: What the Clinical Trials Actually Found. |
The takeaway: supplements are best thought of as part of a daily routine through the season, not a rescue kit. If you want the longer version, read Vitamin C, Zinc, and Vitamin D for Colds: What the Research Actually Shows.
When should you call a doctor?
Most colds get better on their own. CDC says to contact a healthcare provider if symptoms last more than 10 days, a fever lasts more than four days, or you have trouble breathing or signs of dehydration[1]. Also call if symptoms get better and then suddenly get worse, or if you have asthma or another chronic condition that tends to flare with colds.
The honest summary
- Rest, fluids, honey, saline and steam are the proven basics.
- Stay home while you're sick and test if it might be flu or COVID.
- Vitamin C taken only after symptoms start hasn't shown a consistent benefit.
- Zinc may shave a little time off a cold, with low-certainty evidence and more side effects.
- Daily habits before you get sick matter more than a last-minute scramble.
Once you're past the first day, How to Recover From a Cold walks through the rest of the week.
Our option
Vita Globe Immunity Trio
If you'd rather build a steady routine before the next cold, the Immunity Trio combines our Vitamin C 250mg Gummies (250mg per two-gummy serving), Elderberry 150mg Gummies with Vitamin C & Zinc (for adults) and Zinc Citrate Gummies with Vitamin D & Echinacea. It's designed for daily use through fall and winter, not as a first-sniffle fix. Add up the zinc from everything you take and stay within the NIH adult upper limit of 40mg a day unless your provider says otherwise.
Frequently asked questions
Can you stop a cold once it starts?
Not really. There's no cure for the common cold, and it should improve on its own[1]. What you can do is rest, stay comfortable and avoid passing it on.
Should I take extra vitamin C when I feel sick?
The research doesn't support it. Vitamin C taken only after symptoms started showed no consistent effect on cold length or severity in the Cochrane review[3]. If you take vitamin C, a steady daily amount is the approach that showed a small benefit.
Do zinc lozenges help a cold?
They might shorten it a little if started early, but the evidence is low-certainty and zinc often causes a bad taste or nausea[4]. Check with your healthcare provider, especially if you already take a zinc supplement.
Is it OK to exercise when a cold is starting?
Light movement like an easy walk is usually fine if you feel up to it. If you have a fever, body aches or chest symptoms, rest instead and let your body recover.
How do I know if it's flu instead of a cold?
You often can't tell by symptoms alone. Flu, COVID-19 and RSV can look like a cold but carry a higher risk of severe illness, so CDC recommends testing if you suspect them, especially if you're at higher risk[5]. It matters because antivirals for flu and COVID work best when started early[1].
Sources
- Centers for Disease Control and Prevention. Common Cold: Treatment and Self-Care. cdc.gov/common-cold/treatment
- Centers for Disease Control and Prevention. Preventing Spread of Respiratory Viruses When You're Sick. Respiratory Illnesses. cdc.gov/respiratory-viruses
- Hemilä H, Chalker E. Vitamin C for preventing and treating the common cold. Cochrane Database of Systematic Reviews. 2013:CD000980. doi:10.1002/14651858.CD000980.pub4
- Nault D, Machingo TA, Shipper AG, Antiporta DA, Hamel C, Nourouzpour S, et al. Zinc for prevention and treatment of the common cold. Cochrane Database of Systematic Reviews. 2024:CD014914. doi:10.1002/14651858.CD014914.pub2
- Centers for Disease Control and Prevention. About the Common Cold. cdc.gov/common-cold
- Abuelgasim H, Albury C, Lee J. Effectiveness of honey for symptomatic relief in upper respiratory tract infections: a systematic review and meta-analysis. BMJ Evidence-Based Medicine. 2021;26(2):57-64. doi:10.1136/bmjebm-2020-111336
- Hemilä H. Zinc lozenges and the common cold: a meta-analysis comparing zinc acetate and zinc gluconate, and the role of zinc dosage. JRSM Open. 2017;8(5):2054270417694291. doi:10.1177/2054270417694291
About the Vita Globe Editorial Team
The Vita Globe Editorial Team researches and writes our wellness content, working from peer-reviewed research, systematic reviews and guidance from bodies such as the NIH and the FDA. We cite our sources inline and update articles when the evidence changes.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for informational purposes only and is not a substitute for medical advice. Talk to your healthcare provider before starting any new supplement, particularly if you are pregnant, nursing, taking medication, or caring for a child.
