Related Clues:
- Proving beneficial
- Strong in operation
- Powerful drug hooks quite a few
- Impact I have is impressive
- Shelter beside river is effective
- Strong drug used by hospital department
- Very sick under anaesthetic, initially, which is helping
- Very powerful
- Having great power
- Maybe overpowering part of encampment by river
- Profiting from a volume in a bad way
- Striking operative producing the desired result
- Powerful warning Republican put out
- Powerful Top Ten medley
- Successful, serviceable