Two products, one problem: the burn that turns up in the back half of a race and takes your output with it.
Beta Alanine works slowly. Take it daily and muscle carnosine climbs. Carnosine sits inside the muscle fibre and mops up the hydrogen ions released when you work anaerobically. Give it 4 weeks before you judge it.
Lactic Acid Buffer works on the same sessions from the other side. Magnesium, potassium, vitamin C and selenium, every dose printed on the label. Take it daily through a hard block and double up on race day.