Beta Alanine is extremely effective, especially for High Intensity Exercise. .
It has been proven to reduce muscle fatigue. You can google the many studies.
There are tons of Beta Alanine products out there.
Our Optimum Nutrition "Threshold" product contains Beta-Alanine, Histidine, and Phosphates
1 Scoop of "Threshold" will provide 1.6 Grams of Beta Alanine.
3-4 Grams a Day will be sufficient.
I drink Threshold about 20 min before training and sometimes I sip on it while training.
I noticed a difference after about 2 1/2 weeks. Others have told me they noticed sooner.
Now.... couple this incredible product with Creatine and you are in!!
Hope this helps.