Mac is clear of parasites

Our six month old lab-mix has had a bout with parasites for the last six weeks.  The second round of medications and I feel the holistic oils I began giving him have cleared him of any parasites.  I learned about the holistic oils from my massage therapist.  She had used it on her dog after three rounds of dewormers didn't work.  The book she showed me about various  holistic oils said this particular one helped remove parasites.  Did it do the trick, I'm not sure, but now our dog is clear of the parasites and is going to be free to mingle with other dogs.