Can you please specify the dosage in drops for Oregano Oil and Grapefruit Seed Extract for Phase 1 anti-fungal rotation if we have the liquid? I calculated 13 drops to = 500g, but that seems like a lot 3 times a day.

You are talking Candida Diet and not GT5 I assume. Yes, the equivalent to 500mg/day— I'd start with 8-10 drops though. If that provokes too much die-off, you can cut it in half. The issue is that the number of mg isn't always a good way to match, because they are concentrated differently depending on quality or processing. For example, if you use the PRL oregano oil drops, you will only need 3-5 drops 3x/day to get the same benefit.