帮四海姐查了一下，这个药属于慢热型的Long-action, 要12天才能完全失去效力。

https://druggenius.com/half-life/amlodipine/

What is the half-life of amlodipine?

The half-life of amlodipine is about 30 to 50 hours.

How long does amlodipine stay in your system?

Considering the drug’s half-life, it could take early 12 days for amlodipine to leave the body. Elderly patients may notice that it takes longer than this.

How long does it take for amlodipine to leave your system?

It takes about 11.5 days (275 hours) for amlodipine to fully leave your system.