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.
Size & Weight Requirements. 1  Postcards Postcards must be rectangular to qualify for First-Class MailÂ® prices. 2  Envelopes Standard Sized Envelopes Envelopes must be rectangular to qualify for letter prices. 3  Large Envelopes Large envelopes must be rectangular to qualify for flat pricing. Large envelopes that exceed size requirements of a letter will be charged package prices. Packages Packages can be sent using Priority Mail ExpressÂ®, Priority MailÂ®, First-Class MailÂ® Parcels, USPS Retail Groundâ¢, and Package Services. Contents must not weigh more than 70 lbs. Lower weight limits may apply. Girth is the distance around the thickest part of the package. In most cases, the maximum combined length and girth is 108 inches.