This is another example of self-care and community-test medicine. Medicines can come from other sources --not necessary pharmaceutical/drug companies. Community can test "their" medicines and make the results known -- so everyone (not just doctors and nurses) know how good the medicines are.

One problem! We need to change our way of believing (that only medicines from laboratories are good -- there are evidence that proves that belief is wrong), we are to look at medicine as an evolutionary process: we have a new drug, it gets tested by people, if the drug is ineffective people won't use it anymore. If it is effective then they talk and tell others (like in this case).

This may be the way of indigenous knowledge. Science has some miles to catch up.