The connection between Ashwagandha and Piperine isn't as strong as it is for other herbs like Curcumin. In fact, while there are numerous studies demonstrating the enhanced absorption of Curcumin when combined with Piperine, we are yet to find solid evidence supporting the combination of Ashwagandha and Piperine. The existing evidence is largely anecdotal, and it's also worth noting that Ashwagandha doesn't have the same absorption issues as Curcumin. With these considerations, we decided not to include Piperine in our formulation, a decision that also helps keep the cost of the supplement more affordable for our customers.