There is some debate over whether or not a comma should be used after an adverb at the beginning of a sentence. The main argument for using a comma is that it helps to create a pause before the main verb, which can aid in clarity and understanding. However, some style guides suggest omitting the comma in these cases, as it can lead to clutter and confusion. Ultimately, it is up to the writer to decide whether or not to use a comma after an introductory adverb.