When you have a Gastric Band (Lap Band) at a minimum you will need to be taking a multi-vitamin. Calcium and additional protein is not always required unless recommended by your physician.
Chewable multivitamins are typically recommended until 2 months after surgery. After 2 months most physicians allow for patients to take non-chewable versions.
Reminder, each vitamin manufacturer has different dosages to gain the amount of vitamins required after surgery. Make sure to view the Dosage Chart in each product to see the number of tablets needed to obtain the required dosage.
Remember if you are taking a vitamin that contains iron you don't want to take calcium at the same time. You will want to take them 2 hours apart as taking them at the same time could decrease absorption as well as could cause abdominal discomfort.