Most upper respiratory infections are caused by viruses, which means antibiotics won’t help. Treatment focuses on managing symptoms while your immune system clears the infection, a process that typically takes 7 to 10 days. The good news is that a combination of simple, low-cost strategies can make that week significantly more comfortable.
What to Expect as Symptoms Progress
Upper respiratory infections follow a fairly predictable pattern. A sore throat usually appears first and lasts only a few days. Within two to three days of onset, nasal secretions shift from clear to white, then green or yellow. This color change is a normal part of the immune response, not a sign you need antibiotics. Cough typically develops around day four or five, after nasal and throat symptoms are already underway.
Most people feel their worst around days three through five, then gradually improve. If your symptoms haven’t improved at all after 10 days, or if they initially get better and then suddenly worsen around days three to four with new fever or increased nasal discharge, that pattern suggests a possible bacterial complication like sinusitis. Symptoms lasting longer than two weeks warrant looking into other causes such as allergies, mononucleosis, or pneumonia.
Managing Fever and Pain
Over-the-counter pain relievers are the most effective tools for the headaches, body aches, sore throat, and fever that come with a URI. Acetaminophen and ibuprofen both work well. You can take them individually or use a combination product. Adults using a combination tablet typically take three tablets every six hours as needed, with a maximum of 12 per day. For children, dosing should be determined by a pediatrician based on the child’s weight and age.
Fever itself isn’t dangerous at moderate levels. It’s part of your body’s defense system. Treating fever is really about comfort. If a mild fever isn’t bothering you, you don’t necessarily need to medicate it.
What Actually Works for Cough
Cough is often the most persistent and annoying URI symptom, and unfortunately, the evidence behind common cough medications is underwhelming. Clinical trials reviewed by the UK’s National Institute for Health and Care Excellence found that codeine, a common prescription antitussive, was no more effective than placebo at reducing cough symptoms in adults, whether given as a single dose or multiple daily doses.
Dextromethorphan, the active ingredient in many over-the-counter cough suppressants, performs slightly better but still has limited evidence of meaningful benefit. Guaifenesin, the expectorant found in products like Mucinex, similarly showed no significant difference from placebo in clinical trials of adults with acute cough.
Honey is a notable alternative. A Cochrane review found that honey was roughly as effective as dextromethorphan at reducing cough frequency in children, and it was clearly better than no treatment or placebo. A spoonful of honey before bed can coat the throat and calm nighttime coughing. One important caveat: never give honey to children under 12 months due to the risk of botulism. For adults, honey in warm water or tea is a low-risk option worth trying before reaching for a cough syrup.
Clearing Nasal Congestion
Saline nasal irrigation is one of the better-supported remedies for URI congestion. It works by physically flushing out mucus and inflammatory compounds while improving the function of the tiny hair-like structures (cilia) that move mucus through your nasal passages. A study of 390 children with URIs found that those who used saline irrigation had significantly less nasal obstruction, fewer secretions, and used less medication than those who received routine care alone.
The type of saline delivery matters. One trial of 200 adults found that a micronized saline spray improved nasal airflow, mucus clearance, and symptom severity compared to liquid saline. Neti pots, squeeze bottles, and fine-mist sprays are all available at pharmacies. If you use a neti pot or squeeze bottle, always use distilled, sterile, or previously boiled water to avoid introducing harmful organisms into your nasal passages.
Over-the-counter decongestant sprays provide faster relief but should be limited to three consecutive days. Using them longer can cause rebound congestion that’s worse than the original stuffiness.
Zinc Lozenges: Timing and Dose Matter
Zinc lozenges can shorten a cold, but only if you take enough and start early. A systematic review found that doses below 75 mg of elemental zinc per day had no effect on cold duration. Above that threshold, the results were significant: zinc acetate lozenges at over 75 mg per day reduced cold duration by 42%, while other zinc formulations at similar doses reduced it by about 20%.
To hit that daily target, you’d typically need to take a lozenge every two to three waking hours. The key is starting within the first 24 hours of symptoms. Zinc lozenges taken days into an illness show much less benefit. Common side effects include a metallic taste and mild nausea, which is why many people stop taking them before completing a course.
Rest, Fluids, and Humidity
These basics aren’t exciting, but they genuinely help. Staying well hydrated keeps nasal mucus thinner and easier to clear, and it supports the increased metabolic demands your body faces while fighting an infection. Water, broth, and warm liquids all count. Warm fluids in particular can soothe a sore throat and temporarily ease congestion.
Sleep is when your immune system does its heaviest lifting. If you can take even one or two days to rest early in the illness, you’ll likely recover faster than if you push through at full speed. A cool-mist humidifier in your bedroom can also help, especially in winter when indoor air is dry. Dry air irritates already-inflamed nasal and throat tissue, making symptoms feel worse.
When Antibiotics Are Actually Needed
Antibiotics treat bacterial infections, not viral ones, and the vast majority of URIs are viral. Prescribing antibiotics for a standard cold does nothing except expose you to side effects and contribute to antibiotic resistance. However, a small percentage of URIs do develop secondary bacterial complications, most commonly bacterial sinusitis.
Guidelines from the American Academy of Family Physicians identify three specific patterns that suggest a bacterial infection has developed:
- Severe onset: High fever (102.2°F or higher) with significant facial pain and thick, discolored nasal discharge lasting at least three to four consecutive days from the start of illness.
- Persistent symptoms: URI symptoms lasting 10 or more days with no improvement at all.
- Double worsening: Symptoms that initially improve, then get noticeably worse after three to four days, with new fever, headache, or increased nasal discharge.
If your illness follows one of these patterns, it’s reasonable to seek evaluation for antibiotics. Outside of these scenarios, antibiotics are unlikely to help.
Signs of a Serious Problem
Most URIs are uncomfortable but harmless. Certain symptoms, however, signal something more dangerous. Seek emergency care for a fever over 103°F (40°C), difficulty breathing, chest pain, wheezing or stridor (a high-pitched sound when breathing in), dizziness, confusion, or visible skin pulling inward between your ribs with each breath. These can indicate that the infection has spread to the lower respiratory tract or that your body is struggling to maintain adequate oxygen levels.