how many others have had really strong side effects from transfer factor 4000? i began taking it for a month at a very low dose -- about 1 capsure or even a half capsule -- along with sublingual heparin. but i feel awful, esp on the days i take the transfer factor. i'm completely fatigued, my neck and shoulders ache, i can barely drag myself through the day and can't concentrate. are these common reactions? my symptoms pre-transfer factors and pre-heparin were mostly muscle pain-related, not fatigue. i do have a "chronic/reactivated" EBV test result though. how long does it take to get over these effects? is it worth continuing with TF?