I have never been offered SANEXAS, so no, have not tried it. The laser is a warm light source designed to promote circulation, improve tissue repair, and reduce pain, a treatment called Photobiomodulation (PMB). I appreciate your question because it resulted in my looking for a reliable source of information regarding the treatment that you asked about, which in my case, is Lightforce Class IV. The website that would answer any question I could think of asking about this approach is: "Laser Therapy Medical Treatment Class IV / Lightforce Therapy Lasers."
Honestly, I don't know for certain what it is that helps me the most, but I do know that this Class IV strength of laser treatments helps enough for me to work its ongoing cost into my budget.