Congressional hearings. Federal investigations. Consumer outrage.

In the wake of developments like these, many drug company executives are laying low. Their favored business models, based on raising drug prices indiscriminately, are now seen as a liability; many pharmaceutical companies are curbing increases on their products and accepting that this once-lucrative jig may be up.

Not Arthur P. Bedrosian, chief executive of Lannett Company. A generic drug maker with roughly $600 million in net sales in fiscal 2016, Lannett continues to push prices skyward on some of its offerings. And those moves are noteworthy on two accounts: First, its drugs are all off patent, meaning they are no longer proprietary formulations and should sell at deep discounts. The other: Lannett is raising prices even as it faces an antitrust inquiry from the Justice Department and a drug-pricing investigation by Connecticut’s attorney general.

Lannett, based in Philadelphia, sells drugs for thyroid conditions, gastrointestinal diseases and congestive heart failure, among other ailments. Its most recent price rise on dicyclomine, a treatment for irritable bowel syndrome, is scheduled to go into effect on May 2. A bottle of 100 10-milligram capsules will cost $19.95, up from $5.90, its price since 2001.

But that is a relatively tiny bump compared with recent price increases on its other drugs. Last year, Lannett more than tripled the price of terbutaline, a treatment for asthma and emphysema, propelling it to $435 for 100 tablets of 2.5 milligrams each, up from $136 for the bottle.