89.97% sales after 1 word added (A/B test)

Movexa added just one word to their headline.
It increased their sales by 89.97%.

Not bad, yeah? 🙂
I want those results too.

So what was that word?

Their initial headline was: “Natural Joint Relief”.
Looks like a good headline, focused on a benefit that a user will get.

Here’s the new headline that increased their sales by 89.97%:
Natural Joint Relief Supplement

Why?
This word made the headline clearer on what specifically brings the promised benefit.

Source: vwo.com/blog/headline-ab-test-increased-sales/