Crossword Genius

Laxative … and opens bowels at last, after treatment (5,4)

Ross

I believe the answer is:

senna pods

I'm a little stuck... Click here to teach me more about this clue!

'laxative' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'and opens bowels at last after treatment' is the wordplay.
'at last' suggests the final letters.
'after treatment' indicates anagramming the letters (letters treated or processed in a new way).
The final letter of 'bowels' is 's'.
'and'+'opens'+'s'='andopenss'
'andopenss' anagrammed gives 'SENNA PODS'.

Can you help me to learn more?

I've seen this clue in The Independent.
Want a hint initially instead of a full solution? Install my app