Injection Site Tenderness. It is common to experience irritation and tenderness or discomfort if vitamin B12 supplementation is received by injection. These side effects tend to subside after receiving the shot.
The United States Postal Service recommends that mailboxes be 41-45 inches off of the ground and 6-8 inches back from the curb with a minimum recommendation of 4 feet off the ground for those people living in the city.
The U.S. Postal Service requires 23-cent first-class postcards to be at least 3-1/2 inches high by 5 inches wide, but not over 4-1/4 inches high by 6 inches wide. Office supply stores have ready-made perforated postcard sheets, including those with top-of-the-line coated postcard paper.