Federal officials have received reports of 13 deaths over the last four years that cited the possible involvement of 5-Hour Energy, according to Food and Drug administration records and an interview with an agency official. Since 2009, 5-Hour Energy has been mentioned in some 90 filings with the F.D.A., including more than 30 that involved serious or life-threatening injuries like heart attacks, convulsion and, in one case, a spontaneous abortion, a summary of  F.D.A. records reviewed by The New York Times showed.

The distributor of 5-Hour Energy, Living Essentials of Farmington Hills, Mich., did not respond to written questions about the filings, and its top executive declined to be interviewed. Living Essentials is a unit of the product’s producer, Innovation Ventures.

However, Living Essentials said the product was safe when used as directed and that it was “unaware of any deaths proven to be caused by the consumption of 5-Hour Energy. ~Barry Meier