Worming Pigs is essential to allow them to thrive and ensure their long-term well being. There are numerous injection-based treatments, which will treat your pigs for most types of worm infestation.
Most pig wormers are ivermectin based, with Noromectin Multi Injection, Ivomec Injection and Virbamec Injection all being ivermectin based.
Noromectin Multi Injection is a broad section anti-parasitic agent effective against most species of worm. Virbamec Injection will not only treat worms, but is also licensed for the treatment of warbles, lungworms, eye worms etc.
During periods of stress or when due to give birth multivitamin injection can be useful, if your pig is generally lacking in thrift then Multivitamin Injection could be an effective solution. Dupharal is also a good general-purpose multivitamin injection.