I requested the initial sample for a charge of $4.95 for a small supply. That product did nothing to alleviate my pain.
Letters to Instaflex went unanswered requests for credit were ignored. I stopped payment thru my CC. There was nothing in their ads that stated that they would continue sending me additional supplies of their product.
I finally had three bottles of their junk at home and still suffered from joint pain. As a last resort I filed complaints against them with the Texas and Utah attorney Generals which got their attention and they issued full credits of $224.00.