the MFV hypothesis, both in the one-Higgs doublet case and in the two-Higgs doublet
scenario with large tanβ. The constraints are derived mainly from the b→ s inclusive
observables measured at the B factories. The implications of these bounds in view of
improved measurements in exclusive and inclusive observables in b→ sℓ+ ℓ− and s→ dνν¯
transitions are discussed.