Yes, at 3 caps/day the dose supplies the conventional 30mg amount of that most users agree is equivalent in effect to 3g DAA. Actually 3 caps supplies 33.75mg, which is slightly higher than the conventional dose by a little over 10%.
At 4 caps, MFXB supplies 45mg of NMDA (equal to ~4.5g DAA) which is exactly 1.5x more than the conventional dose. This is designed for heavier users over 70kg, or those who wish to utilize higher amounts than are currently available with other products. It's a nice option because you don't have to buy an additional bottle to make use of the maximum amount.