A question for the doctors on this list. I’ve read this study today https://journals.sagepub.com/doi/full/10.1177/2515690X211026193 and it mentioned cinchona extract (the source of quinine) . Now it sort of make sense to me on a gut level. So the question is this: would it hurt to add such extract to the preventive regime along with wit D, etc etc? Any known side effects? Cheers.