بسم الله الرحمن الرحيم
According to the Holy Quran it is haram to take interest. Allah says in the Holy Quran:
وَأَحَلَّ اللّهُ الْبَيْعَ وَحَرَّمَ الرِّبَا [البقرة : 275]
The Holy Prophet Muhammad (may peace and blessings of Allah be upon him) has cursed those who take interest, give interest, record it and bear witness to it.
Hence it is not lawful to take interest based loan to run the business. You must manage your business with the capital amount available with you, it shall bring prosperity, in-shaAllah.
Allah knows Best!
Darul Uloom Deoband