Saccharin oddly dropped as energy drink ingredient (4)
I believe the answer is:
acai
'energy drink ingredient' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'saccharin oddly dropped' is the wordplay.
'oddly dropped' means one should take alternating letters (letters in odd-numbered positions removed).
The alternate letters of 'saccharin' are 'ACAI'.
'as' acts as a link.
Can you help me to learn more?
(Other definitions for acai that I've seen before include "South American palm tree" , "fruit which is nutritious" , "South American food product" , "something nutritional to eat" .)