We revise the limits on the FCNC higgses in manifestly left-right symmetric
theories. It is shown that the combination of the Kobayashi-Maskawa
CP-violation with the tree level ΔS=2 higgs exchange gives very large
contribution to the CP-violating ϵ parameter. It leads to the new
strong constraint on the FCNC higgs mass, M>50- 100 TeV, enhanced by factor of
the order mt​/mc​​. Being addressed to the supersymmetric left-right
models, FCNC problem requires both right-handed scale and supersymmetric mass
parameters be heavier than 50 TeV for tanβ∼1. The most relaxed case
corresponds to tanβ∼20−30 where right-handed scale can be of the
order of few TeV.Comment: 11 pages, latex, 3 figure