Hi Bobby,
I am Shahyan's sister.
I got the Boswellia Serrata from Vitamin Shoppe (just because it was located closest to my place). You should be able to get it from any vitamin store.
Our mother takes 800mg 3 times a day as recommended by Dr. Flavin.
Do contact the Dr. Flavin and she will let you know if this helps with primary brain tumours.
Her foundation's website is
www.collmed.com and her email address was on the previous post by Shahyan. If you need her phone number, private message me and I will give it to you.
Hope all this helps & God Bless.
Hina