Thanks for the links, David. You might want to look at this about the use of ivermectin with tetracycline:

https://shareok.org/handle/11244/330994

Used an hour or two before the ivermectin dose, the tetracycline appears to prevent ivermectin from inhibiting mitochondria without inhibiting the other useful effects of ivermectin.

Since tetracycline works, Vit. K2 ought to work. Your success with ivermectin and lack of mitochondrial inhibition may be due to something as simple as a good diet.