opadać do normalnego poziomu in inglese:

inflammation subsides

He subsided, more surprised than ever

If, during an angina attack, the pain doesn’t subside after the second dose of their medication, suspect a heart attack and call 999 immediately.

By midnight, many of the guests had gone home and the noise from the party subsided.

Weak foundations caused the house to subside.

sitting talking until Sergei’s energy subsided.

I've loved, I've laughed and cried I've had my fill; my share of losing And now, as tears subside

Though his pain had subsided, he still felt far from strong.

After the initial nerves subside, all is going well.

My trembling subsided in his sure embrace.