The pills are made of a powder mix of the drug and a volumizing substance and flow enhancers and stickiness after compression enhancers by mechanical compression. If there would be inconsistency inside the pill, there would also be inconsistency from pill to pill. Thus cutting in half will give you half of the content.
BMS, the company that made Baraclude (brand name etv), will help pay UP TO $200 (us dollars) of your Baraclude co-pay until Dec. 31, 2014. Here is the link:
http://www.baraclude.com/copay-benefit-program.aspx
I don't know if this will really help you, but I thought I would post it anyway.
those cutting brand tdf and etv in two are exposed to resistance and treatment failure because active ingredient is not homogeneous in the pills, so even if you cut pill perfectly in half you won t get half dose active ingredient
only some generic versions of entecavir or tenofovir may be splitted
brand tdf and etv are made so that you can t cut in half and they can have maximum profit from you