Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take chloroquine with all of your drugs and health problems. Plaquenil causing depression Chloroquine in liver Alopecia plaquenil The dosage of chloroquine phosphate is often expressed in terms of equivalent chloroquine base. Each 250 mg tablet of chloroquine phosphate is equivalent to 150 mg base. For malaria suppression Adult Dose 500 mg = 300 mg base on exactly the same day of each week. Chloroquine Oral tablet 500mg Drug Medication Dosage information. Learn about the reported side effects, related class drugs, and how these medications will affect your daily lifestyle. Visit for more details. Take chloroquine at least 2 hours before or after taking ampicillin. Chloroquine may decrease the amount of ampicillin in your body and the ampicillin may not work as well. Blurred vision, nausea, vomiting, abdominal cramps, headache, and diarrhea may occur. For all uses of chloroquine: WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Do not start, stop, or change the dose of any drug without checking with your doctor. How to take chloroquine phosphate 500 mg My daughter just started taking chloroquine phosphate., Chloroquine Oral Tablet 500Mg Drug Medication Dosage. Plaquenil oct damage The risk may also be higher with some doses of chloroquine, if you use chloroquine for longer than 5 years, or if you take certain other drugs like tamoxifen. Call your doctor right away if you have any eyesight changes like blurred or foggy eyesight, trouble focusing or reading, or trouble seeing in dim light. Chloroquine Indications, Side Effects, Warnings -. Chloroquine Phosphate 500 mg Tablet. Chloroquine Dosage Guide with Precautions -. Oct 01, 2018 Adults An initial dose of 1 g salt = 600 mg base followed by an additional 500 mg = 300 mg base after six to eight hours and a single dose of 500 mg = 300 mg base on each of two consecutive days. This represents a total dose of 2.5 g Chloroquine phosphate or 1.5 g base in three days. Taking chloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking this medicine and call your doctor at once if you have trouble focusing, if you see light streaks or flashes in your vision, or if you notice any swelling or color changes in your eyes. The man said that doctors recommend taking 500 mg of chloroquine phosphate for eight days, and the WhatsApp message also included a photo of chloroquine phosphate tablets. The fraudulent claim was.