Chakra Water

Birusu possesses Chakra Water, which contains incredibly dense amounts of pure chakra converted from Moryo. This uses the chakra contained within the Strengthening Prescription: Chakra Injection and stores it as Chakra Water instead. 10 ml of it can be ingested to gain literal Kage levels of chakra flowing in one's body, and is incredibly effective.

Birusu keeps an entire storage tank of this in his storage scroll, with a small water bottle containing this on himself, just in case he is ever in a pinch and needs a major boost in chakra.

This is sold by Shikizaki Hyuga in the black market for expensive prices, and can be bought by anyone.