What Are The Side Affects Of Ivermectin?

Hello... I'm doing research on Scabies for a news release that I am working on. I have just a few questions...
1. Please confirm that treatment includes cream (Permethrin) or pills (Ivermectin).
2. Are these FDA approved?
3. What are the side affects of Ivermectin?
4. Can Ivermectin cause kidney and/or liver problems?
5. How often can Ivermectin be administered?
6. Should cream prior to considering the pills? Should pills be used if a person is not immunocompromised?

Thank you...