The grapefruit peels and lemon peels have many helpful components, but don't make hydrochloriquine. In fact, the peels contain no quinine.

I boiled them down in tonic water, which contains quinine.
Keep the pot lid on and let it slow boil.

That gives us both the quinine and the natural substances in the peels.

Sweeten with honey and stevia. It's not bad tasting unless you let it happen.