Where did you get the lactoferrin?
It is fairly common.... when I was looking for it, I phoned around. Some of the vitamin/supplement stores had it and some didn’t. At least a few of the stores that didn’t have it were ones that normally carried it but were out of stock... perhaps because all of a sudden, it had become strangely more popular than normal....
I bought mine from Swansons vitamins. I think the quality of their products is good, service is good and prices too.