Figure 1: FTIR spectrum of (A) losartan potassium (B) losartan potassium + S. tora gum (C) losartan potassium + guar gum (D) losartan potassium + locust bean gum (E) losartan potassium + xanthan gum (F) losartan potassium + methocel K 100 M (G) losartan potassium + MCC (H) losartan potassium + magnesium stearate (I) losartan potassium + PVP K-30 (J) losartan potassium + aerosil (K) Optimised formulation [F11].