Herb’s practice is primarily in the area of pharmacy law regulatory matters, consisting of counseling and representing pharmacists, pharmacy owners, and pharmaceutical wholesalers regarding acquisitions and sales, federal and state compliance issues, audits by third-party payers, and matters before the Board of Pharmacy, Drug Enforcement Administration, Food and Drug Administration, and Department of Health.

His clients in the pharmaceutical wholesale business have included H.D. Smith Drug Wholesale Co., Bindley Western Industries, and Cardinal Health.