magic bullet 
noun informal
A medicine or other remedy with advanced or highly specific properties: there’s no magic bullet, and we should just try to eat as varied and well-balanced a diet as possible...
- He focused on prevention, lifestyle, and dietary medicine - not magic bullets.
- In the absence of a vaccine and a magic bullet against HIV and the disease it engenders, public health authorities had to develop a comprehensive prevention strategy.
- Even when things are going well, it's natural to become frustrated and wish for a magic bullet to cure your cancer.
Synonyms
solution, answer, resolution, way out;
remedy, antidote, cure, nostrum, panacea
informal quick fix
- safety catch
- safety chain
- safety committee
- safety-critical
- safety curtain
- safety deposit
- safety distance
- safety engineer
- safety engineering
- safety factor
- safety film
- safety first
- safety-firster
- safety fund
- safety fuse
- safety glass
- safety harness
- safety house
- safetying
- safety island
- safety isle
- safety lamp
- safety lantern
- safety lock
- safety man