Vaishnava Samhita. Meera Charitam I. Vol II Book VI Chp 12 Shlokas 20 - 21

मीरोवाच 
सर्वेषामपि रोगाणां विद्यते भेषजं भुवि |
श्रीकृष्णविरहस्यास्य भेषजं नैव विद्यते ||
इमं मे प्रेमतापं तु कोपि वेत्तुं न शक्नुयात् |
औषधं परमं विद्धि कृष्ण सङ्कीर्तनं मम ||  

Meera said

There is some cure for all diseases. But there is no medicine to cure the agony of separation from Lord Krishna. None can understand the depth of my feeling. Krishna-kirtan is the only panacea for this.