Can you add flavored packets or loose tea to the bottle? April 22, 2019 19:25 No, only water should be used in the bottle. Any additive to the bottle may actually clog the filter. Related articles Click here for the Performance Data Sheet Can I buy a filter without signing up for a plan? Which of your products are TSA friendly? Does this filter purify saltwater? What are the dimensions of the bottle? Comments 0 comments Article is closed for comments.