In this case it is better to focus on wet granulation methos.Did you try Mannitol instead of Sucralose? How much the % of I-carnitine in the tablet? what is the size or weight of the tablet?@Mahdi Zeinali
I used Sucralose because it is at least 300 times sweeter than mannitol.
732.7 mg L-carnitine tartrate (=500 mg L-Carnitine) and other excipients are necessary that will increase the weight of tablet to about 1500-2000 mg (Oblong-22).