(R)-dihydrolipoamide + NAD(+) = (R)-lipoamide + NADH + H(+)
(r)-dihydrolipoamide + nad(+) = (r)-lipoamide + nadh + h(+)
(R)-dihydrolipoamide + NAD(+) = (R)-lipoamide + NADH + H(+)
(r)-dihydrolipoamide + nad(+) = (r)-lipoamide + nadh + h(+)