There is no expiration date for cashier's checks. If a cashier's check isn't cashed in a timely manner, considered six months by most banks, it can be considered void or invalid. Keep Learning.
How often might 50000 IU vitamin D be taken - results of clinical trials. There have been many extremely successful vitamin D intervention trials. The trials are listed in the following table are sorted by number of days between doses of 50,000 IU. It appears that the higher the dose of vitamin D the more diseases which are prevented or treated.
A good vitamin D intake is 400 IU per day or even 800 IU per day. Although up to 2,000 IU per day is regarded as safe, in most cases you don't need to take that much. Most people get ample vitamin D via the Sun.