What can be the reason of hypotension espacially postural hypotension in hbv pateint.can vit D and k2 supplemnt be the cause? My friend is is hbv patient and concerned about it.he sometimes feels dizzy.his vit d was too low before taking vit d supplemnt.now pth and vit d are in ranges from the last 6 months..he is taking tdf for 2 years with dna undetactable now. Age 24 otherwise healthy.plz do comment.