Stomach Flu vs. Food Poisoning: How to Tell the Difference and When to Get Help

Stomach flu (viral gastroenteritis) develops gradually over 1-2 days with watery diarrhea, body aches, and low-grade fever — and it is contagious. Food poisoning hits suddenly within 1-6 hours of eating contaminated food, with vomiting, cramping, and sometimes fever. Both cause dehydration, but food poisoning typically resolves in 24-48 hours while stomach flu can last up to a week.

Stomach Flu (Viral Gastroenteritis)

The stomach flu is caused by viruses — most commonly norovirus or rotavirus. It typically develops gradually over 12-48 hours after exposure. Symptoms include watery diarrhea, nausea and vomiting, low-grade fever, muscle aches, and abdominal cramping. It usually lasts 1-3 days and spreads easily from person to person.

Food Poisoning

Food poisoning results from consuming contaminated food or water. It tends to come on suddenly — often within 2-6 hours of eating. Symptoms can include violent vomiting, diarrhea that may be bloody, severe abdominal cramps, and higher fever. Multiple people who ate the same food may get sick simultaneously.

When to Visit Urgent Care

Visit TrufaMED Urgent Care if you have been vomiting for more than 24 hours and cannot keep fluids down, you see blood in your vomit or stool, you have a fever above 101.3°F, you show signs of dehydration like dark urine, dizziness, or rapid heartbeat, or you have severe abdominal pain.

Why IV Hydration Is a Game-Changer

The biggest risk with both conditions is dehydration. When you cannot keep water down, drinking more fluids is not the answer — your body simply cannot absorb them. Our Food Poisoning and Stomach Flu IV ($295) delivers fluids, electrolytes, and anti-nausea compounds directly into your bloodstream, bypassing your upset stomach entirely. Most patients feel dramatically better within 30 minutes.

We also offer mobile IV therapy — our team can come to your home, hotel, or office in the Miami Beach area if you are too sick to drive.

Treatment at TrufaMED

Our providers evaluate your symptoms, determine the cause, and provide fast-acting anti-nausea medication, IV hydration, and antibiotics if a bacterial infection is identified. Most patients leave feeling significantly better than when they arrived.

Do not wait until dehydration becomes dangerous. Walk into TrufaMED or call (305) 537-6396.