Then you should be profoundly ashamed of your vulturistic opportunism.
The problem is not the drug, but users who refuse to act responsibly. There are very clear and specific warnings. How dare you raise the costs for all the many, many other beneficiaries of this excellent treatment, or attempt to get it banned.
I was treated using accutane almost 2 decades ago, was given plenty of warnings and instructions before and during, and suffered no lingering after effects. It is a life-changing drug for some people, and for me it removed a very large distraction. It absolutely made life easier for me and many others. In fact off the top of my head I can think of more than a dozen friends from college and work who used Accutane, none have had lingering side effects, and most now have healthy children, no birth defects in that group.
But there is always a lawyer who find the 1 exception in a million, or someone who didn't heed warnings, ignores the 999,999 other responsible and satisfied users, resulting in the denial of a good and needed option to many, many future sufferers. Selfish opportunism self-promoted as looking out for victims. Maybe your client truly was an innocent exception, but that is no excuse for ignoring the hundreds of thousands(millions?) who have benefited from this treatment, and attempting to deny millions more the same opportunity.
Perhaps you can find a victim of the polio shot side effects and sue the vaccine maker to pay for a yacht or two.