The dosages would offer the thyroid gland limited protection against radiation absorption, but they wouldn't protect other parts of the body.
It is considered an additional safeguard in the event of a nuclear plant incident.
Residents will receive a voucher that can be presented to one of six participating Target pharmacies. Businesses and dependent care facilities will also receive vouchers, but will be asked to attend a forum to receive KI for their employees and customers.
The Target pharmacies accepting the vouchers are in Red Wing, Cottage Grove, Buffalo, Elk River, Rogers and Monticello.