i've tried many forms paulette,
but had a lot of problems from them / ingridients i guess.
THE ONLY FORM THAT DID NOT CREATE PROBLEMS FOR ME WAS
NATURE"S ANSWER D3 DROPS -in virgin olive oil. the most kusher D3 i have been able to find...it took me several months to find it...i've had no reaction to it but i've stoped it - see point 2 bellow :) wasnt able to find a good source of vitK and did not want to ruin Ca/Mg balance.
there are two ideas that come to my mind regarding that low D3 level 1) chronic infections 2) check relatioship with vit K2 - it seems it is better to take also K2 when supplementing D3 for proper Ca distribution in the body.