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.
Posts: 293. Re: how long will it take for my beta blocker to work. Beta blockers have somewhat an immediate effect but full effects take about two weeks to get to a calming effect and less dizziness. And I'm sure your doctor covered this with you...do NOT stop taking them suddenly under any circumstances.