t be episodic, it would more likely be more constant, or at least related to your
dilantin dose. That is relatively easy to figure out, because all it would require is
for blood levels of dilantin to be checked: if the levels are high, in the toxic range, and then your dose is cut down and your episodes stop, then it could be the dilantin. But non-toxic (normal) dilantin levels to my knowledge do not cause sleep attacks.