There is new research that is showing that a properly barefoot trimmed horse can stop and actually reverse some of the damages of Navicular Syndrome, but it must be done as quickly as found out about.
Most people do heartbar shoes and or degree pads... there are
other options available.
Me, I would have some x-rays done so you know if this is indeed what you are dealing with or is it something else.. many things can cause a toe-first foot landing.
You need to know what you are dealing with before you treat for something it isn't by guessing.
Navicular is a progressive ailment...but it can be slowed in progression with correct treatment.
Do some research and read, read, read... ask questions and get factual information to make some of those decisions you will be facing.
As for "supplements"... so many places all pushing "their" product as best;... it stops, reverses, cures... All
those places spouting this are in business to "SELL"... give me case study after case study where the proof is in the facts presented and I will gladly spend the money...till the proof is presented I am a serious skeptic... and will save my money.
I will work with
my vet & farrier first
to give relief and stop the progression of this hated ailment ... then consider alternative means as the time goes forward as needed with their combined guidance and insight..