It's pale, and easy to take (5)
I believe the answer is:
light
'it's pale' is the definition.
(similar in meaning)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for light that I've seen before include "Visible rays" , "Portable" , "without difficulty" , "Opposite of dark" , "Not heavy; understanding" .)