Stomach flu or gastroenteritis infection signs and symptoms include nausea, vomiting, and diarrhea that lasts for about 7-14 days. The stomach flu is spread from person to person, usually via fecal to oral route from poor hand-washing or hygiene techniques.
Location: Egypt. Posts: 1,672. Re: How long for meds to take effect. It takes from 1 to 2 days in order for your high bp meds to work, but it reach its maximum effect in 1 week and some times it takes 2 weeks. They said that but I think it's only a week, not more than that.
If it is going to help, the benefit of depo-medrol should be apparent in 3 to 5 days. I think depo-medrol shots work quickly, usually within 24 hours at most & inmediately for some people. i've only have one mild shot of Depo & had some relief within 12 hours but due to an ongoing staph infection still had drainage.