Cakradatta (Cikitsasangraha) 1.188

1.188

gharṣejjihvāṃ jaḍāṃ sindhutryūṣaṇaiḥ sāmlavetasaiḥ .
ucchuṣkāṃ sphuṭitāṃ jihvāṃ drākṣayā madhupiṣṭayā .. 188 ..

One should rub a sluggish tongue with rock salt, the three pungents, and amlavetasa;
a completely dry and cracked tongue [should be rubbed] with grapes ground with honey. (188)