Gulpful

The taste drove him mad, and, dropping down on hands and knees like a dog, he put his lips to the side of the bucket and drew in long gulpfuls.

Source: wiktionary

Funky held out an unlabeled bottle of whisky to Clifford, who drank a gulpful.

Source: wiktionary

He had drunk on beery-extra layers of fat to his already substantial torso until his midsection hung in front with an almost improbably swollen belly which lugged at his heart and squeezed his lungs so that his breathing was a rhythmic gasping for gulpsful of air with the effort to trundle his bulk about on foreshortened legs.

Source: wiktionary