There are two known types of atelectasis. The first type is called acute atelectasis which usually results from surgery involving the opening of the chest cavity or the abdominal area. This type of atelectasis may also result from physical trauma to the lungs like during car accidents or stabbing incidents.
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.
This isn't a first-choice muscle relaxing medication. Other drugs work better and have fewer side effects. Takes over an hour to kick in and only lasts 3 to 6 hours. Zanaflex (tizanidine) can lower blood pressure, so be careful if you are already on a blood pressure medication. Need to be consistent every day in taking this with or without food. Elderly individuals have more side effects when taking Zanaflex (tizanidine).