Pre-marinated meats are an easy and convenient way to get dinner on the table, but are they safe or just old meat in disguise?

Today, Dr. Oz answers consumers’ biggest questions when it comes to pre-marinated meat at the grocery store.

Plus, with all the butter alternatives lining the shelves Dr. Oz helps you find the healthiest one.  Also, Shark Tank’s Daymond John speaks out about his emergency surgery.

Watch THE DR. OZ SHOW, weekdays at 9 a.m. on CBS 62.