I've never heard of F10 ointment. I know it is used in nebulizers. You should be able to get some from your vet. It has just recently been approved, but not all vets have it in stock.
What are you using it for?
I would think you would need a vet to direct treatment. I once used it to nebulize an African Grey with pneumonia. The bird had a lot of trouble with it and we had to stop treatment.