If price were no object then perhaps Anvirzel might be the best choice, simply because it is the patented medicine version and is manufactured under extremely high quality conditions. On the other hand, SOPC as well as the 100% oleander extract Rose Laurel OPC Plus (which ships out of Texas instead of South Africa), is made by a pharmaceutical manufacturing company. If money is a consideration, then I would say that the SOPC or Rose Laurel OPC Plus would be better options. When it comes to choosing between the two supplements, it depends on what condition you are addressing. If it is cancer, either one would be a good choice. I prefer the SOPC for HIV, and when it comes to SOPC I prefer the liquid extract for better absorption sublingually before swallowing or possibly rectally (something we are looking into as an option to oral ingestion).
There is no need to go through me for either Anvirzel of the supplement versions. I do have friends at Nerium, the same as I do at Phoenix Biotech, which produced Anvirzel prior to spinning off Nerium so they could concentrate their efforts on a new oleander extract which has just completed FDA phase I trials (but will not likely be available to the public for a long time). When Phoenix was the producer, you could mention my name and get 10% off. That might still be true at Nerium if you decide to go that route. Note also that getting Anvirzel requires you to submit doctor records and be approved before it can be shipped to you via FDA exception rule.
No, the FDA exception rule is only for Aniverzel imported to the U.S., but that does not mean that they do not also import to Canada. Last report I had was that they do ship to Canada. As far as I know the Salud Integral site is where you get Anvirzel, but you could always also contact Nerium to get info. You might try to reach Dennis Knocke at Nerium - as he was my main contact there. FYI, both supplements have been shipped to Canada successfully in the past.