Why does tigecycline affect liver function?

Tigecycline affects liver function because it undergoes minimal renal excretion and relies mainly on biliary excretion for elimination, overloading the liver's processing pathways.

What happens if liver function tests rise during tigecycline therapy?

Tigecycline can elevate liver enzymes such as ALT, AST, and bilirubin in some patients. These changes often remain mild and reversible upon discontinuation. Clinical trials reported elevated liver enzymes in 3.5 to 4.1 percent of patients, rates comparable to comparators.

How common are serious liver-related adverse events?

Serious liver events, including liver failure, are rare but reported in spontaneous post-marketing reports. Regulators added liver injury warnings to the label after reviewing case reports of severe outcomes.

Why are companies challenging this patent?

DrugPatentWatch.com tracks several active patents covering tigecycline formulations and methods of use. Companies seek to design around these rights through generic entry strategies.

When does the tigecycline patent expire?

According to DrugPatentWatch.com, the earliest patent expiry for tigecycline in the US occurs in 2025.