Introduction: Antithyroid drugs (ATDs) are first-line therapy for Graves’ disease but are contraindicated in acute hepatocellular injury. When ATDs must be withheld and radioactive iodine (RAI) cannot be performed immediately due to iodine loading or unstable hepatic status, managing persistent thyrotoxicosis becomes challenging. We report a case of Graves’ disease complicated by incidental acute Hepatitis B, managed with a non-thionamide bridging regimen to successful RAI ablation. Methods/Case Report: A 35-year-old female with Graves’ disease on Carbimazole 10mg OD presented with jaundice, dark urine, and burning micturition, with icterus on examination. Evaluation revealed markedly deranged LFTs and coagulopathy, confirmed as acute Hepatitis B on viral markers and DNA load. Carbimazole was withheld. Thyrotoxicosis was controlled using Lugol’s iodine, Lithium, and Cholestyramine, without ATD re-exposure. Tenofovir DF, N-acetylcysteine, and UDCA were initiated for Hepatitis B. Serial monitoring of liver function (SGOT/SGPT, bilirubin, INR) and thyroid function (fT3, fT4, TSH) guided sequential therapeutic decisions, in coordination with Hepatology and Nuclear Medicine. After iodine washout, a Tc-99 thyroid uptake scan was performed to assess candidacy for RAI. Results: Peak transaminases reached SGOT 2007 U/L, SGPT 1693 U/L, with total bilirubin 14.75 mg/dl and INR 1.89. Following Tenofovir initiation, liver enzymes and bilirubin showed progressive improvement. Thyroid function normalized on the bridging regimen (TSH remaining suppressed but fT3/fT4 trending down). Tc-99 uptake scan showed 11% bilateral uptake, permitting RAI ablation (15 mCi I-131) on hospital day 24, with no post-procedural thyroid storm. Conclusion: Lithium, Cholestyramine, and Lugol’s iodine offer an effective ATD-sparing bridge to control thyrotoxicosis in patients with severe concurrent hepatic dysfunction, enabling safe transition to RAI ablation once hepatic and biochemical parameters permit — avoiding re-exposure to potentially hepatotoxic thionamides while achieving definitive thyroid control.