Just make sure you don't actually use the additional available credit, because then you'll be back in the same available credit ratio boat... and you'll be deeper in debt. (inc.com)
This makes your debt - to - available - credit ratio higher, which can seriously affect your credit score if your other credit cards have high balances. (valuepenguin.com)
It can also help keep your debt to credit ratio lower as well. (freefrombroke.com)