What should be done to get rid of the white coating and red bumps at the back of my tongue?

Tongue issue: The bumps at the back of your tongue may not be abnormal, there often are quite large taste buds in the posterior region of the tongue that look very strange but are normal and supposed to be there. The white coating may be from normal papilla on the tongue. Sometimes they form an almost comblike or brushlike appearance. Brushing your tongue should be a part of daily hygiene. Keep regular checkups.