Using liraglutide - a prescription drug indicated for the treatment of type 2 diabetes mellitus and obesity may affect male fertility, according to a case report filed by researchers at State University of Rio de Janeiro in Rio de Janeiro, Brazil.

In addition to the known adverse effects like acute pancreatitis and polyarthritis, liraglutide has a deleterious effect on male reproductive function in patients with type 2 diabetes mellitus, according to the report.

Liraglutide may also induce allergic reaction, blurred vision or slurred speech, abnormal urination, difficulty swallowing, fast heartbeat, increased hunger shakiness, fever, chills, cough, sore throat, body aches, shortness of breath or trouble breading, sudden severe stomach pain, nausea, vomiting, fever, lightheartedness, unusual tiredness or weakness. Patients should seek medical attention immediately when they experience any of the adverse effects. (David Liu, PHD)

Fontoura P, Cardoso MC, Erthal-Martins MC, Werneck C, Sartorio C, Ramos CF. The effects of liraglutide on male fertility: a case report. Reprod Biomed Online. 2014 Jul 29.