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.
According to USPS.com, for an envelope to be eligible for mailing at the price for letters, a piece must be: 1  Rectangular. 2  At least 3-1/2 inches high x 5 inches long x 0.007 inch thick.  No more than 6-1/8 inches high x 11-1/2 inches long x 1/4 inch thick.