Honestly I wouldn't pursue that. When I mentioned XYZ had failed sterility checks, folks said half of all testing shows failures including major pharmaceutical companies. People just accepted it. They're okay sacrificing your safety.
Dropped 50 since last June and hit my goal without going past 7.5 tirz. Did add 1.2-1.8 servo for about 6 weeks, backing down now to 5mg tirz and 1.2 servo. Looking like 5 and 0.9 could work for maintenance. Have stock for 7 years worth.