Ultra NAC .

I have used this product for several years now from many vendors. The first was Immunocal which was very expensive. I used it for my son with autism and myself with very good results. My goal was to boost the immune system and help to remove toxins and heavy metals. I brought my sons mom to a functional medicine Doctor I had been following and learned to trust as I do Dr. Osborne. He had NAC in capsule form and recommended it. It was much cheaper. I trust your do diligence and your products. Additionally your product had Silica in it. However, in my last order I purchased the 750mg caps. and note it did not contain Silica??🤷‍♂️ A little disappointed.