Complex sentence: In June 1970, Michel suffered a third seizure at the psychiatric hospital where she had been staying and was prescribed anti-convulsion drugs for the first time, including Dylantin, which did not bring about immediate alleviation of Michel's symptoms.
Split into simpler sentences: In June 1970, Michel suffered a third seizure at the psychiatric hospital where she had been staying and was prescribed anti-convulsion drugs for the first time. The name of the drug she was prescribed is Dylantin; the drug did not bring about immediate alleviation of Michel's symptoms.