SAN FRANCISCO – The ex-CEO of litigation funder Juridica Asset Management Ltd. and a team from Boies Schiller Flexner have teamed up with the Cherokee Nation to sue major pharmaceutical distributors and retail pharmacies over the opioid addiction epidemic that has ravaged the tribe and much of the rest of the country.

The suit, filed Thursday in the District Court of the Cherokee Nation in Tahlequah, Oklahoma, alleges that drug distributing giants like McKesson Corp. and retail pharmacies such as CVS Health and Walgreen Co. violated tribal and federal laws by turning a blind eye as prescription pain killers flooded the streets.