Charak Samhita
तस्माच्छुद्धानशुद्धांश्च शमनैर्बृंहणैरपि । हिक्काश्वासार्दिताञ्जन्तून् प्रायशः समुपाचरेत् ॥१५०॥
Hence shamana (palliative) and brimhana (nourishment) therapy should be done in hikka and shwasa with or without purification of the body.
english translation
tasmAcchuddhAnazuddhAMzca zamanairbRMhaNairapi । hikkAzvAsArditAJjantUn prAyazaH samupAcaret ॥150॥
hk transliteration by Sanscript