How many stamps do you need to send a letter with 3 bottles of Vitamins?

Postage is determined by weight, not number or size of items. To determine how many stamps you need, contact your local post office by phone, in person, or visit the USPS website.

You will need to know the total weight of the items you are sending. Most bottles of vitamins will list their weight somewhere on the bottle; if you cannot locate this information, just weigh the bottles on a kitchen scale.