Any service or consultation performed by a registered Naturopathic Doctor is considered an eligible medical expense. That includes saliva tests, injection fees (not the injection themselves), IV therapy (fees to administer the IV, not the IV itself), prolotherapy, nutritional analysis, and even stress management.
On the other hand, vitamins and supplements, and many other products sold by Naturopathic Doctors aren't an eligible expense according to the CRA.
When it comes to IV therapy and injections, the cost a naturopath may charge to administer it is eligible, however the cost of the IV supplements, and injections are ineligible.
We know it's tricky, so that's why we always need a description (or receipt) of the services provided by a Naturopathic Doctor so we can determine eligibility.