nutricost tudca 250mg, 60 capsules (tauroursodeoxycholic acid) - premium quality nutricost tauroursodeoxycholic acid (tudca) is a metabolite of ursodeoxycholic acid (udca). tudca is thought to be one of the best and most cost-effective option for gainers seeking ultimate liver protection. tudca is an endogenous bile acid. nutricost's tudca is not from bear bile.try nutricost's tudca now!