  The precise knowledge of the Standard Model Higgs boson and top quark masses
and couplings are crucial to understand the physics beyond it. SM like Higgs
boson having mass in the range of 123-127 GeV squeezes the parameters for
beyond standard model. In recent LHC era many TeV scale neutrino mass models
have earned much attention as they pose many interesting phenomenological
aspects. We have contemplated B-L extended models which are theoretically well
motivated and phenomenologically interesting, and successfully explain neutrino
mass generation. In this article we have analysed the detailed structures of
the scalar potentials for such models. We have computed the criteria which
guarantee that vacuum is bounded from below in all directions. Along with that
triviality and perturbativity bounds are also necessitated. Incorporating all
such effects we constrain the parameters of such models by performing their
renormalization group evolutions.
