Worming Question

I did a search and read all that I could and still came up with a few questions about worming. I lost a polish hen the other day, she was very skinny and was eating fine upto a few days before her death so I assumed it was worms. I gave them safeguard goat wormer, which is what I had on hand for my pheasants for three days in a row and I will repeat it 10 days later.
Now the questions; will this be satisfactory or should I use ivormectin after the safeguard? If so how long afterwards? Also how long should I wait to eat the eggs after the last dose of safeguard or ivormectin if neccesary? I read anywhere from one to three weeks so I am not sure.
I decided to worm since I was only getting an egg or two a day so I would not be loosing any money by not being able to sell the eggs. Well the girls must have not cared for the wormer so as payback they have started laying like crazy, yesterday I got 22 eggs, more than I think I got the month of January upto that point. So I would like to start selling the eggs asap so I can offset the cost of feed a little.
Thanks for the help and sorry if the information was already discussed and I just missed it.