What Do Clinical Studies Say About Januvia Overdose Effects?
In clinical studies before Januvia was approved, single doses of up to 800 mg were shown to cause changes in the heart rhythm. In particular, a certain change called QT prolongation was seen, although the effect was so small that it is unlikely to cause any problems. There have been so few reported cases of overdoses with Januvia that the full effects of such overdoses are not known.
