As they paralyse, rather than kill the worm straightaway, yellow wormers allow for more natural expulsion of parasites from the lungs. They are the best choice if a moderate to large lungworm infection is expected. However, if in infestation is large enough any product can induce excessive coughing and thus respiratory complications in animals. That is why it’s important not to let lungworm infection get too advanced. Note they are not suitable for use in animals producing milk for human consumption. Read more...
Video on picking a lungworm dose