March 6, 2012 No Comments FREE 16 oz Muscle Milk at Thorntons Print out the coupon and redeem for a FREE 16 oz Muscle Milk at Thorntons. Coupon valid March 6-12, 2012. Locations. FREE 16 oz Muscle Milk at Thorntons -EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.