The main component of this product is calcium ascorbate. Other ingredients of Ester-C are compounds known as vitamin C metabolites, which are dehydroascorbic acid and calcium threonate. Precaution of chloroquine Hydroxychloroquine high dose Hydroxychloroquine Plaquenil is considered a disease-modifying anti-rheumatic drug DMARD. It can decrease the pain and swelling of arthritis. It may prevent joint damage and reduce the risk of long-term disability. Hydroxychloroquine is in a class of medications that was first used to prevent and treat malaria. High-Dose Vitamin C. The debate is on whether or not daily low-dose vitamin c is better for the body than a sporadic one time high-dose of vitamin c. Some studies of IV high-dose vitamin C in patients with cancer have shown improved quality of life, as well as fewer side effects. 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. ACTIONS Furthermore, The Linus Pauling Institute advises "Ester-COne experiment published in the Jan.-Feb. The manufacturer claims that it possesses superior bioavailability over vitamin C, but available research does not support this, the Linus Pauling Institute reports. Ester c and plaquenil Hydroxychloroquine Plaquenil Toxicity and., High-Dose Vitamin C, Immune System Function, & Lupus. Plaquenil sleep disturbanceStopping hydroxychloroquineHydroxychloroquine kidney damagePlaquenil and artemisia annua together One vitamin supplement that's been linked as a possible cause of tinnitus is vitamin D, but that's only from taking doses far higher than the recommended daily amount. If you've been taking high doses of vitamin D3 and you notice tinnitus that's worsening, cut back on your intake, or cut it out altogether, which may alleviate the problem. List of Vitamins That Cause Tinnitus. PLAQUENIL®. Ester-C® – Vitamin C & The Immune System – Ester C® Company. Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. PLAQUENIL is indicated for the treatment of uncomplicated malaria due to P. falciparum, P. malariae, P. ovale, and P. vivax. PLAQUENIL is indicated for the prophylaxis of malaria in geographic areas where chloroquine resistance is not reported. Limitations Of Use In Malaria. PLAQUENIL is not recommended for the treatment of complicated malaria. PLAQUENIL film-coated tablets cannot be divided, therefore they should not be used to treat patients who weigh less than 31 kg. For radical cure of P. vivax and P. malariae infections, concomitant therapy with an 8-aminoquinoline compound is necessary.