as needed

US /æz ˈniːdɪd/
UK /æz ˈniːdɪd/
"as needed" picture
1.

conforme necessário, se necessário

when or where necessary; as required.

:
Add water as needed to the mixture.
Adicione água conforme necessário à mistura.
The nurse will change the dressing as needed.
A enfermeira trocará o curativo conforme necessário.