Only those rejuvinatory recipes which are easily available, which bestows benefits and suitable to the age (period of the author) and are of great comfort (advantage), were described so far and not others, though yielding great benefit and are difficult to procure.
If by lapse or transgression of rules of rejuvenatory therapy, diseases were to appear, then they should be treated suitably, suspending the use of rejuvenatory recipes.
The person who speaks the truth, who does not become angry, who engages his sense organs (and mind) in the pursuit of knowledge of soul etc., who is calm and who always indulges in good activities only should be considered as receiving Nitya rasayana (daily) rejuvinatory therapy.
गुणैरेभिः समुदितः सेवते यो रसायनम् । स निवृत्तात्मा दीर्घायुः परत्रेह च मोदते ॥ १८० ॥
He, who is endowed with these qualities, consumes the rejuvenatory recipes, becomes free from the bondage of birth and death, and enjoys long life in this life and also in the next.