Low dose Naltrexone (LDN) is available through our laboratory with a valid doctor's prescription. It is available in a variety of doses however the 3mg and 4.5mg strengths are the most common. We also make it in a liquid form for rapid absorption. All our LDN products are immediate release (NOT SLOW RELEASE) using pharmaceutical grade naltrexone powder and micro-crystalline cellulose as a filler. Contact us for a price. Click here for more information on LDN Click here to down load a LDN research booklet (pdf file) written by the LDN research trust.