A commonly available over-the-counter quinine source exists in Margosa Tree Bark and Cinchona succirubra, Peruvian Bark
Tablets of bark extract are widely available in tablet form, from many sources, including Amazon.com here. "Currently sold out" -- fast runs on these things. Maybe check your local natural foods & supplements store.
A big note of caution from Coronavirus (COVID-19) Resources For Pharmacists: Chloroquine Resources & Notes:
(Scroll down about half way)
• Beware liver toxicity
• Consider avoiding in patients with heart failure, recent myocardial infarction, G6PD deficiency, epilepsy, or porphyria
I haven’t seen any Zombies from this pandemic yet. Has anyone else been deprived? Maybe the zombies will come when the hyrochloroquine is prescribed, en masse....
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feeling that others are watching you or controlling your behavior
feeling that others can hear your thoughts
feeling, seeing, or hearing things that are not there
fever with or without chills
.inability to move the eyes
increased blinking or spasms of the eyelid
large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, and sex organs
loss of hearing
lower back or side pain
noisy breathing
painful or difficult urination
red irritated eyes
red skin lesions, often with a purple center
severe mood or mental changes
sore throat sores, ulcers, or white spots on the lips or in the mouth
sticking out of the tongue
trouble with breathing, speaking, or swallowing
uncontrolled twisting movements of the neck, trunk, arms, or legs
unusual behavior
unusual bleeding or bruising
unusual facial expressions
yellow eyes or skin
https://www.drugs.com/sfx/hydroxychloroquine-side-effects.html