Astanga Hrudaya
चय एव जयेद्दोषं कुपितं त्वविरोधयन्। सर्वकोपे बलीयांसं शेषदोषाविरोधतः॥१५॥
The Doshas should be treated properly when there are in Chaya stage (mild increase) only. In their stage of Kopa (Dosha enhanced imbalance), they should be vanquished without opposing / interfering with one another Dosha. When there is simultaneous enhanced increase (Kopa) of all the three Doshas, the most powerful / most aggravated Dosha should controlled first, without opposing the remaining Doshas.
english translation
caya eva jayeddoSaM kupitaM tvavirodhayan। sarvakope balIyAMsaM zeSadoSAvirodhataH॥15॥
hk transliteration by Sanscript