Most people have heard of the drug Humira. It costs $85,000 or more a year and can treat several conditions, including rheumatoid arthritis, psoriasis, and several skin conditions. In addition, millions of Americans use a long-acting insulin to treat diabetes called Lantus. Both medications are expensive and have put a strain on employers, patients, and their families. The market has responded by developing and approving cost-effective biosimilars that are equally effective as the existing medication.…