What is everyone's favorite hoof supplement? 

It's too soon for me to really have an opinion but I just bought a tub of CEP Hoof RX.  I like that it's pelleted and a very small scoop, I just give it once a day. I recently changed farriers after using this guy for the last several years. My horse had some damage to his bulbs and we need to grow out to try to reverse some damage that had been done. This new guy put some Natural Balance shoes on my horse last week and I am floored at the difference in my horses feet and angles. All the swelling has gone away and he feels better than he ever has.. I've been riding him lighty at home since getting back. I got a 120 day supply of the hoof RX  so I'll make a decision after that if it will stay on my program or not. 

I have used Farnam's Horseshoer's Secret and liked it alot better then others I have used in the past. As I have gotton older and wiser the best supplement would be a good healthy diet with the best hay you can get,I have stoped wasting my money on hoof supplements about 5 years ago and my horses hooves look better then they did when I was using the supplements. So to me a good Farrier is a must, a good diet, good hay. I feed Bluebonnet Equilene Pelleted feed to 2 and Triple crown Lite to my IR gelding but going to have to change him to Intensify Ex-Factor (since my feed store wont be getting the Triple Crown Lite after this month} and these feeds have every thing that a horse needs in a diet along with good hay. If I felt like I need to add a hoof supplement I'll go back to Farnam Horseshoers Secret. 

OE Nutraceuticals. This product is amazing. And no I don't sell it. I use it 

Life Data Farrier's Formula Double Strength. Only product that tightened up my horse's hooves and thickened his very thin soles. He won't ever be without it. Plus his mane and tail have grown. 

I have had the best results with Tri Amino by Uckele. My farrier has commented how much better my horses' feet look.  

Agreed.  It is the only product that I have seen work on my horses and the added benefit of them not climbing the walls like some do with the other supplements.