Sales of energy drinks are unlikely to be affected by potential legal action by New York State authorities, according to an analyst. 

PepsiCo, Monster Beverage Co and Living Essentials have received subpoenas from the New York State's attorney general over the ingredients in their energy drinks and alleged "inaccurate" marketing, according to reports.

However, anaylsts Stifel Nicolaus said in a note today (28 August) that the "seemingly narrow scope" of the subpoena is "less bad than feared". 

"We think changes to labeling and marketing related to source of stimulant are unlikely to materially impact energy drink sales," the note added.

However, the investigation is in its "early stages", the analysts noted, with the ultimate outcome difficult to anticipate.