Acura Pharmaceuticals Inc. (ACUR)

[The Rainmaker]

ACUR Clinical trial Limit X info:

Limitx™ Technology

Limitx™ technology is an early stage technology intended to address abuse by excess oral consumption of multiple tablets and provide a margin of safety during accidental over-ingestion of tablets. In proof of concept laboratory tests, Limitx™ tablets demonstrated the ability to limit the release of the active ingredient from tablets when multiple tablets are simultaneously introduced into simulated gastric fluid. Using .055N HCl dissolution bath, a single Limitx tablet released most of its active ingredient within 15 minutes while eight Limitx tablets in the same bath released the equivalent of one tablet’s active ingredient in 15 minutes. Eight immediate-release tablets of a marketed product comparator released most of its active ingredient in 15 minutes compared with over 2 hours for the eight Limitx tablets.

The FDA’s 2015 Guidance singles out immediate-release combination products with acetaminophen as being predominately abused by the oral route and that reducing nasal snorting of these products may not be meaningful. The initial Limitx™ formulation utilizes hydromorphone as its sole active ingredient. We intend to initiate formulation development of a hydrocodone/APAP product candidate utilizing our Limitx technology upon the conclusion of formulation optimization for our Limitx hydromorphone product. In August 2015, the United States Patent and Trademark Office (“USPTO”) issued to us patent 9,101,636 covering, among other things our Limitx™ technology.