A message from the State of Colorado Joint Information Center to the Citizens of Colorado Do not use chloroquine phosphate, or anything a health care provider does not prescribe, as a COVID-19 remedy. It could kill you. 1. Do not ingest aquarium use products or any other chemicals that contain chloroquine phosphate. These chemicals are not intended for human consumption and can lead to serious health consequences, including death. 2. Medications like chloroquine phosphate and hydroxychloroquine sulfate should be taken only when prescribed by and under the supervision of your healthcare provider and always according to the instructions provided. 3. Seek immediate medical attention if you are experiencing any unexpected symptoms after taking chloroquine or hydroxychloroquine by contacting your healthcare provider or your poison center (1-800-222-1222).