Answer
Dec 10, 2021 - 07:33 AM
The Defend Outdoor Protection Patch contains Vitamin B1. Taking it orally will not work. It has to be applied dermally. If you use a lotion or cream containing it, reapplication is usually necessary after one sweats, showers, etc. The Defend Patch emits Vitamin B1 dermally for up to 36 hours.
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