I like this one:
5 simple ways to overcome mood swings
“Overcoming mood swings” is a clear benefit; and “mood swings” is a power phrase that would attract any parent whose child suffers from mood swings.
I prefer the above to the headline Mood swings: 5 simple ways to overcome them, because the latter ends with a rather weak “them”. It’s better to end with a word that has a real meaning.
If you’d like to include herbal remedies, then I wouldn’t put it in brackets, but include it like this:
5 Herbal Remedies That Can Overcome Mood Swings
5 Simple Herbal Remedies That Can Overcome Mood Swings
Enchant readers. Woo customers. Win business.