In continuation to the previous FDA letter to the industry, FDA issued a Draft Guidance “Residual Solvents in Drug Products”. PDF copy of the document attached here. Please note that, this guidance document is being distributed by FDA for comment purposes only.
Subject: FDA announcement on Residula Solvents chapter <467>
Dear All,
FYI.
As you are aware, proposed Chapter from the U.S. Pharmacopeia (USP) for control of residual solvents in drug products will be effective from July 1, 2008. FDA announces that, all the drug substances, excipients, and products are subject to relevant control of residual solvents, even when no test is specified in the individual USP monograph.
The specifications for residual solvents in ANDAs should:
ü Ensure that all drug substance and excipient components of the drug product, have residual solvent acceptance limits that fall within the ICH Q3C (option 1) limit
ü Ensure that all drug substance and excipient components of the drug product, weighted by their amount in the drug product, results in a cumulative daily exposure for residual solvents that falls within the ICH Q3C (option 2) limit
ü Ensure via direct testing of the drug product, that the total daily exposure for residual solvents falls within the ICH Q3C (option 2) limit.While the USP Chapter <467> specifically addresses drug products that are covered by a monograph in the USP, to assure safety of all products and for consistency of review, OGD also expects ANDAs for products not official in the USP to contain information and data as necessary that assures safe levels of residual solvents in the drug product consistent with USP <467>.
While the USP Chapter <467> specifically addresses drug products that are covered by a monograph in the USP, to assure safety of all products and for consistency of review, OGD also expects ANDAs for products not official in the USP to contain information on safe levels of residual solvents in the drug product consistent with USP <467>.