How long does it take for worm medicine to work on pets?

The time it takes for worm medicine to work on pets can vary depending on the type of worms being treated and the specific medication used. In general, most worm medications start to take effect within 24-48 hours, but it may take up to a few weeks to fully eliminate the worms from the pet's system. It is important to follow the instructions provided by the veterinarian and complete the full course of treatment to ensure the worms are effectively eradicated.