Figures legend:
  1. Figure 1: The final extract in paste form (blue arrow) with 100% concentration. One cc syringe was used for intratympanic instillation after serial dilution into the exact concentration of 25% aqueous and ethanol Henna extract each (black arrow).
  2. Figure 2: Observation and scoring of the rat vestibular parameter (dyskinetic head movements and circling) in a glass cube.
  3. Figure 3: Endoscopic-guided intra-tympanic instillation of henna extract. The blue arrow shows the rat’s right tympanic membrane and the black arrow shows the 25-gauge needle attached to the 1cc syringe for intratympanic instillation.