For all the claims of bioavailability, I was surprised to see that Theracumin(R) doesn't seem to contain piperine[1] or any perines (which are usually in curry powder courtesy of black pepper). The 90mg dosage also seemed low, I have been taking 500mg of 95% extract daily for a couple of years.
1: https://www.ncbi.nlm.nih.gov/pubmed/9619120