Dennis J . Hsu, M.D. vs Guardian Drug Co. Inc.: FDA Enforcement Comparison

Guardian Drug Co. Inc. has been the subject of 23 FDA enforcement/approval records tracked by Argus HQ, compared to 1 for Dennis J . Hsu, M.D..

Dennis J . Hsu, M.D.: 0 warning letters, 0 recalls, 0 approval records, 1 Form 483.

Guardian Drug Co. Inc.: 0 warning letters, 23 recalls, 0 approval records, 0 Form 483s.

Side by side

Dennis J . Hsu, M.D. — Warning letters0

Guardian Drug Co. Inc. — Warning letters0

Dennis J . Hsu, M.D. — Recalls0

Guardian Drug Co. Inc. — Recalls23

Dennis J . Hsu, M.D. — Approval records0

Guardian Drug Co. Inc. — Approval records0

Dennis J . Hsu, M.D. — Form 483s1

Guardian Drug Co. Inc. — Form 483s0

Timeline

Dennis J . Hsu, M.D.

Most recent FDA action: March 3, 2026

Full history →

Guardian Drug Co. Inc.

Most recent FDA action: June 10, 2026

Full history →

Cite this comparison

Pre-formatted for a story, footnote, or reference list:

"Dennis J . Hsu, M.D. vs Guardian Drug Co. Inc.: FDA Enforcement Comparison." Argus HQ, accessed July 13, 2026. https://argushq.ai/compare/dennis-j-hsu-m-d-vs-guardian-drug-co-inc

Source: FDA.gov (aggregated across Warning Letters, Recalls, Approvals, Form 483s) ↗