March 23 (Reuters) - An Arizona man has died and his wife is in critical condition after they ingested chloroquine phosphate - an aquarium cleaning product similar to drugs that have been named by President Trump as potential treatments for coronavirus infection. The couple, in their 60s, experienced immediate distress after swallowing the drug, an additive used at aquariums to clean fish tanks, according to Banner Health Hospital in Phoenix. Chloroquine phosphate shares the same active ingredient as malaria drugs that President Trump has touted as possibly effective against COVID-19, the potentially life-threatening disease caused by the coronavirus.