Finish Line’s Vitamin B1 contains 8,000 mg per lb. of Thiamine mononitrate in powder form with our unique apple flavor. 
Available sizes 
4 lb, 93 day supply for 1 horse at 19.5g (0.5 vol. oz.) per day 
20 lb, 465 day supply for 1 horse at 19.5g (0.5 vol. oz.) per day