I'd use your judgement on the caffeine. If 200mg is too much, then try 1/2 a pill or a cup of coffee (estimating 100mg per cup).

The ephedrine won't lose all effectiveness without the caffeine, but they are supposed to be better in that 10:1 ratio.

I've also heard of people taking 1/2 doses more often. So if 200mg of caffeine is too much for you, try taking 8mg of E & 100 mg of C five or six times a day instead.