Gadkari was in the region as a part of the BJP's 'Parivartan Yatra' and addressed a public meeting at Mangrulpir in Washim district today.
But, later, he felt uneasy and his sugar-level was found to have shot up, said his personal assistant Sudhir Deolgaonkar.
He then cancelled visit to Chikhali in Buldhana district and preferred to return here by a helicopter and was immediately attended by doctors.
He was now stable and had been advised rest. As he had set out for Mangrulpir immediately after returning from Delhi early morning, it may have caused him fatigue, family sources said.