Novartis Animal Health US announced on March 7th that they have resumed the sale and distribution of Deramaxx (dog osteoarthritis medication). However, the company still has not released information about when their once popular heartworm preventatives, Sentinel and Interceptor, will become available again. On their March 7th update, the company stated that "Production of validation batches of our parasiticide products produced at our Lincoln, Nebraska manufacturing facility continues as we work toward regulatory approval for a full restart. While we continue to make progress, the restart is taking longer than originally anticipated. Currently, the exact dates for parasiticide product availability remain unknown..."
For more information, you can visit the Novartis Animal Health FAQ page.