Kudlow joined the Trump administration this year as director of the National Economic Council.
Top White House economic adviser Larry Kudlow was discharged from the hospital on Wednesday, and his recovery from a heart attack is going very well, the White House said.
She says doctors say Kudlow's recovery "is going very well" and the president and his aides are happy Kudlow is back home and they "look forward to seeing him back to work soon".
The President had broken the news of the heart attack via his Twitter account just moments before his historic summit with North Korean leader Kim Jong Un. The meeting, which had been shadowed by the Trump administration's escalation of rhetoric on trade and tariffs, splintered shortly after the president left Quebec and tweeted he was pulling back his approval of a joint G-7 statement.
F1 gossip: Valtteri Bottas, Force India, Mercedes, Fernando Alonso
Behind the leaders, there was chaos when Williams's Canadian Lance Stroll squeezed Toro Rosso's Brendon Hartley into the wall. The race was over for both drivers and Hartley was taken to hospital though fortunately was given the all clear from doctors.
Kudlow, who was White House budget director under President Ronald Reagan, is a fervent defender of so-called supply-side economics - the theory that growth is best stimulated by lowering taxes and reducing regulation - an approach embraced by Trump.
Kudlow soon settled comfortably into the world of political and economic commentary, working at the conservative magazine National Review and becoming a host of CNBC shows beginning in 2001.
The White House has described the cardiac event as "very mild".