perusing
dude (or dudette)
a search (or a thorough browse of the forum) would have told you this--
a) you can't do humaworm long term in terms of longer than thirty days, with a break every ninety days
b) and if you meant is it safe doing a. for long periods of time, reading through this and seeing how many pages of people who say they are very happy with HW and use it repeatedly, would also give you an indication of safety.
if I'm missing something here, please chime in. I'm picking on you slightly because once you start reading you'll see how many people are repeat customers. RG and his family take the herbs as maintenance doses (from what I can remember,) and while I know you want to look to sources besides the seller, there are sources there if you care to look.