Two Middletown youths accused of burglarizing a doctor’s office to supply a teenage party with ‘‘pep pills,’’ will be arraigned today in Middletown City Court. The youths, Thomas Mann, 19, 46 St. Louis Ave., and Charles Wroten, 18, 19 Mulberry St, were assigned lawyers when they appeared in City Court yesterday. Joseph C. Spano was assigned to handle Wroten’s case, and Benjamin A. Gilman was assigned to Mann’s defense. Both lawyers are from Middletown. The youths were arrested by city police after state troopers of the Middletown barracks picked up 15 boys and girls at a ‘‘pep pill’’ party in Circleville Sunday. Wroten and Mann are accused of breaking into the Highland Ave. office of Dr. Edward St. J. Calabrese early Sunday morning. They allegedly took barbituates and a small amount of money, after ransacking several roomS. Wroten and Mann were ordered held without bail pending the ar raignment today, Mann and two girls who attended the party were hos pitalized from an overdose of barbituates following the police raid. The police raid came in the midst of a three-month state police investigation into the use of a patent medicine containing codeine by Middletown area teenagers. Troopers closed in on the Circleville party after a car of teenagers was stopped driving erratically along a road near Circleville. The oc cupants were said to be under the influence of barbituates, which have been described as having the effect of liquor.