evidence: We are issuing this joint statement to highlight the important role that physicians, pharmacists and health systems play in being just stewards of health care resources during times of emergency and national disaster. We are aware that some physicians and others are prescribing or dispensing medications currently identified as potential treatments or prophylaxis for COVID-19 (e.g., chloroquine or hydroxychloroquine, azithromycin) for themselves, their families, or their colleagues. In addition, some entities have been purchasing excessive amounts of these medications through commercial distribution channels in anticipation of potentially using them for COVID-19 prevention and treatment. We strongly oppose these actions that can lead to supply disruptions for patients who need these medicines for chronic conditions. [...] We are further concerned by the confusion that may result from various state government agencies and boards issuing emergency rules limiting or restricting access to chloroquine, hydroxychloroquine or other emerging therapies or requiring new procedures for physicians and other healthcare professionals and patients. If these bodies promulgate new rules, we urge that they emphasize professional responsibility and leave room for professional judgment. We further urge that patients already on these medications for chronic conditions should not be negatively impacted by new laws, rules or other guidance. In a time of national pandemic, now is not the time for states to issue conflicting guidance, however well-intentioned, that could lead to unintended consequences.