HCQ pills consist of:
PLAQUENIL (hydroxychloroquine sulfate) tablets contain 200 mg hydroxychloroquine sulfate, equivalent to 155 mg base, and are for oral administration.
Inactive Ingredients: Dibasic Calcium Phosphate, Hydroxypropyl Methylcellulose, Magnesium Stearate, Polyethylene glycol 400, Polysorbate 80, Starch, Titanium Dioxide.
https://www.accessdata.fda.gov/drugsatfda_docs/label/2007/009768s041lbl.pdf
Many of these ingredients are also used in cosmetics.
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Exploding, burning chemical plants for cosmetic ingredients (Indiana, Mexico, Italy, Germany)
lead to scarcity of ingredients for HCQ and diminish possibilities for enhanced production
capabilities for HCQ.