Pengaruh Penambahan Stabilisator Asam Galat, Asam Kafeat, atau Asam Askorbat terhadap Stabilitas Obat Antituberkulosis Isoniazid dan Pirazinamid = Effect of Gallic Acid, Caffeic Acid, or Ascorbic Acid Stabilizer Addition on Isoniazid and Pyrazinamide Antituberculosis Drugs Stability