Which dewormer for NOV-Dec? I know a fec test

Needs to be done first. I was just very confused standing at TSC looking at all the different medicines for deworming. What is normally used for Nov-Dec?
The previous owner said he was good until Nov on his dewormer.

Thanks!

When you get the results back on the fecal test it will tell you what kinds of worms are there and depending on those results you can decide which is the most effective de-wormer to use, if any at all is needed.