What to use to parasite cleanse my 5 years old

Hi everyone:

This is my first time posting in this forum. I suspect that my 5 years old daughter has some kind of parasites, she has done some stool test but always comes back negative.

I was wondering what product will be ok for her to take that will really work on eliminating any parasite that she might have.

I really appreciate your time.

Thanks in advance
Iraida