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yes safe
http://en.wikipedia.org/wiki/Ivermectin Scroll down to the title HUMANS and it will tell you its uses.
lice safe
No. Shampoo does not kill lice. Lice and their eggs (nits) need to be manually removed and you need to use some kind of insecticide to actually kill the lice and nits.Go tohttp://www.head-lice-treatment-information.comfor pictures and an understanding of the life cycle of head lice.They also can direct you to a safe non toxic head lice treatment that is actually a natural insecticide that is bad for lice but safe for humans.
Yes, the shampoo's are safe.
If prescribed by your doctor.
No, it is not recommended to give these to children. There are children-safe tablets available designed specifically for children.
I as a veterinary practitioner have used Clorsulon+Ivermectin combination drug on few dogs and have not got any negative results. The drugs are working properly.
Yes it is, I think there are some out there that aren't so bad but I would not recommend them, if you have lice use Robi Comb! it's a safe, chemical pain and mess free method to killing lice. GOOGLE IT
No, lice and other things would trouble life in a trench.
Yes. It is reasonably safe to use the same.
It depends on individual tablets and when it was produced. Check the label and it will show the expiry date