I'm currently taking a ECA stack. I'm noticing alot of benefits and very few side effects. What I am trying to do is gain some muscle mass while losing all the excess fat. Would there be any benefits to taking the ECA stack along with Creatine? Or should I lose all the excess fat first using the ECA, and then use Creatine later to gain the muscle mass that I want?

I personally don't think that it's a good solution to try and gain muscle and lose fat at the same time. However, it can be done with persistence to diet and training. It will be a slow process, but if it's done right, it will really pay off for you.

One problem with the creatine and ECA mix: creatine can cause a problem if you don't drink plenty of extra water while taking it. Caffeine is a diuretic and makes you lose water. Stimulants in general can cause adrenal gland hyperfunction, which can also cause fluid hydration irregularities. Combining these two supplements can lead to hydration problems if you aren't careful. Regardless of whether you are using creatine or ECA, if you experience muscle cramps or have any symptoms of dehydration, I would stop using them immediately.

Dr. Mirkin's E-Zine
January 13, 2002
Creatine Make Muscles Stronger

When you exercise and your muscles get as much
oxygen as they need, they burn carbohydrates, fats and protein
for energy. When you exercise so intensely that you cannot get
all the oxygen you need, your muscles use creatine and ATP.
So when you exercise very intensely, you can delay fatigue by
taking creatine; this allows you to do more work, which makes
you stronger.
Food sources of creatine include meat, poultry and
seafood. The body of a 160-pound person contains 120 grams
of creatine, and you take in and use about two grams a day.
Taking in three times that amount, or six grams a day, may harm
you. Taking too much creatine can cause weight gain, increased
insulin production and possibly kidney damage. High levels of
insulin constrict arteries to cause heart attacks, and affect the
brain and liver to make you fat.
The chemical process of extracting creatine in the
laboratory forms toxic contaminants called dicyandiamide and
dihydrotriazines, which must be removed before humans can take
it safely. So let the buyer beware. Creatine supplements may
allow you to lift more weights and make you stronger, but too
much may harm you (Journal of Sports Medicine and Physical
Fitness , Volume 41, Issue 1, 2001).