Yes, the USANA Nutritionals can be taken with coffee and tea.
Caffeine at typical and normal intakes (about 300 mg/day or less) has no negative impact on vitamin absorption, retention, etc. This means that as long as your coffee intake is no more than 2-3 cups per day, you should be fine. At intakes above this level, the caffeine may contribute more to disrupted sleep patterns and withdrawl symptoms, which can - along with other factors - negatively impact vitamin absorption.
There is some indication that the tannins (polyphenolic compounds) found in coffee and tea can interfere with iron absorption, but as USANA does not currently offer an iron supplement, this is not typically a cause for concern.
For information regarding coffee and tea while on the RESET program, please visit the RESET FAQ:
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