Nausea, vomiting, and diarrhea can come on suddenly and leave you feeling weak, dehydrated, and unsure of what to do next. While these symptoms are often caused by viruses, food poisoning, or mild infections, they can sometimes signal more serious conditions. That’s where urgent care clinics come in—offering fast, walk-in care to help you feel better, sooner.
At San Antonio Regional Hospital’s urgent care clinics, providers assess the severity and cause of your symptoms. They may ask about recent food intake, travel, or other health issues to help pinpoint the source. If dehydration is a concern, oral or IV fluids may be administered. You might also receive anti-nausea or anti-diarrheal medications, along with recommendations for diet and hydration. 
Urgent care is ideal when symptoms are persistent but not life-threatening. If you’re unable to keep fluids down, have a fever, or your symptoms last more than a day or two, getting timely care can help prevent complications.
With short wait times and affordable services, our four urgent care clinics offer a practical solution when your stomach just won’t settle.
12442 Limonite Avenue, Eastvale, CA
951.393.3000
Monday - Friday - 9 am - 8 pm
WKND & HOL - 9 am - 5 pm
Walk-ins Welcome
16465 Sierra Lakes Pkwy, Fontana, CA 92336
909.434.1150
Monday - Friday - 9 am - 8 pm
WKND & HOL - 9 am - 5 pm
Walk-ins Welcome
7777 Milliken Avenue, Rancho Cucamonga, CA, 91730
909.948.8100
Monday - Friday - 9 am - 8 pm
WKND & HOL - 9 am - 5 pm
Walk-ins Welcome
970 N. Mountain Avenue, Ontario, CA 91762
909.579.6680
Monday - Friday - 9 am - 8 pm
WKND & HOL - 9 am - 5 pm
Walk-ins Welcome