WASHINGTON (AP) — Federal health authorities are investigating reports of 13 deaths possibly linked to so-called energy shots and cautioning consumers to talk to their doctors before they take them or other energy drinks.

The Food and Drug Administration has received 92 reports over four years that cite illnesses, hospitalizations and deaths after consumption of a product marketed as 5-Hour Energy. The FDA has also received reports that cited the highly caffeinated Monster Energy Drink in five deaths and one nonfatal heart attack.