What to Drink for the Flu? | Hydration That Helps

When influenza hits, your body loses fluids through fever, sweating, and sometimes vomiting or diarrhea. Replacing them is the single most important thing you can do, and water is the simplest place to start. The key is to begin drinking extra fluids at the first sign of illness and to keep sipping steadily throughout the day, even if you don’t feel thirsty.

Why Hydration Matters Most During the Flu

Fever drives fluid loss faster than you might think. Every degree of temperature rise increases your body’s water needs, and when you’re sick you’re also less likely to eat and drink normally. That combination can tip you into dehydration quickly, which makes flu symptoms feel worse and recovery slower.

Clear fluids like broth and sports drinks with electrolytes are good options, especially when you’re not eating much. Warm tea is another solid choice — the Mayo Clinic recommends it for both comfort and hydration. The goal is simple: take in fluids steadily so your body has what it needs to fight the infection.

Best Drinks for Flu Symptoms

Water is your default. Broth adds sodium, which helps your body hold onto fluids. Oral rehydration solutions — the kind that come as powders or pre-mixed bottles — are the right call when dehydration risk is higher, such as when you have vomiting or diarrhea. For children or adults who can’t drink much at once, CDC guidance suggests a straw, a squeeze bottle, ice chips, or frozen ice pops as practical alternatives.

If you aren’t eating well, a sports drink with electrolytes can help replace what you’re losing. Here’s a quick look at the main options and when each makes sense:

Stomach Flu Is Different — What Changes

If your symptoms are actually viral gastroenteritis — vomiting and diarrhea — the rules shift. MedlinePlus advises against using fruit juice, sodas, or broth to replace lost minerals in this case. Those drinks can worsen diarrhea or throw off your electrolyte balance. Reach for electrolyte solutions instead.

With vomiting, don’t chug. The stomach needs small amounts to hold anything down. MedlinePlus recommends taking 2 to 4 ounces (60 to 120 mL) every 30 to 60 minutes rather than large amounts at once. That slow, steady approach gives your system a chance to absorb the fluids instead of rejecting them.

If you’re looking for a proven electrolyte drink for flu recovery, our roundup of tested electrolyte drink options for flu covers the products that actually deliver balanced minerals without excess sugar.

Drinks to Avoid and When to Call a Doctor

Alcohol is off the table when you have the flu — it worsens dehydration and interferes with your body’s ability to fight the virus. Caffeinated drinks like cola, coffee, and regular tea are also discouraged in CDC guidance for flu hydration. They act as diuretics, which works against your fluid-replacement efforts. Plain water, broth, or diluted electrolyte drinks are safer bets.

Older adults and people with kidney problems should check with a doctor about safe fluid amounts when sick. Babies should continue breastfeeding or bottle-feeding for fluids rather than water alone.

Seek medical care if you notice severe dehydration, confusion, an inability to keep fluids down, or signs of worsening illness. These red flags mean the situation needs professional attention, not just more fluids at home.