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.
It takes 6 weeks to have its full effect. You're doctor should have instructed you to come back for blood work at 6 weeks, then your dose can be adjusted if need be. Be patient, adjusting thyroid meds is a delicate process-and it can take 6 months to a year to get it right.