Many people are sensitive to the ephidrene 'kick' as you have described. You can try cutting the dose until the sides are tolerable, and it WILL still be somewhat beneficial. Also, your body will become somewhat accustomed to the stimulant and the sides will diminsh in concert. Whether the sides will ever be totally tolerable to you remains to be seen.
One other trick is to take the dose with food, especially flax oil, which slows it's absorption and release. The notes about the nor-ephidrene vs plain ephidrene are well noted too. My wife does NOT tolerate ephidrene at all, and for the first few days, the nor-eph is a pain too. Keep in mind that you will want to cycle off of these stimulants frequently because the body DOES rapidly get used to them.
IMPORTANT: Make sure you are getting some Yohimbine HCL, as mentioned in another thread by macrophagealpha. (It's already in Syntrax's Adipokinex) Yohimbine is a great A2 agonist in the aid against sex specific fat. That would be hips, thighs, and buttox for women. Gut and 'love handles' for us guys.
Hope this helps some.
BE