I ordered six bottles of synapse xt for relief from my tinnitus, at a cost of $314.14. I emailed the vendor asking for a refund. They ignored my request, , so the time for the refund ran out. I consumed the product for two months as directed, now I have more noise, no relief and am out my money. Please do not do buy from this shady company User's recommendation: Do NOT send your money to these shysters = junk product.