Vitamin C

Nothing rhymes with scurvy, so this is going to be a difficult effort.

When you are sailing across the sea,
I think we can all agree,
That it would benefit thee
To eat vitamin C.

It would not be a crime
If you did not eat a lime,
But your life would run out of time
Because you would get scurvy.

It would afflict your gums
As your body succumbs
And your skin becomes
Gross and covered with spots.

Yeh, that was pretty poor.