Alan McAfee Baldwin, 25, a resident of the Washington area since 1962, died Oct. 28 in Great Falls National Park, Md., of an apparent overdose of prescribed drugs.

Dr. Francis C. Mayle, a Montgomery County medical examiner, listed the death as a suicide.

Mr. Baldwin's family said he had suffered for many years from schizophrenia and more recently from alcoholism. Mr. Baldwin was a patient at the Shephard-Pratt Hospital in Baltimore in 1970 and 1971 and at the Springfield Hospital Center in Sykesville, Md., in 1973 and again in 1979. sHe had been a recent participant in alcoholic rehabilitation programs in Montgomery County.

Despite his illness, Mr. Baldwin had been a shipping clerk and sales assistant at the W. & J. Sloane Co. in Bethesda, the chief inventory clerk at Peaches' Records and Tapes in Rockville, and a carpenter's assistant in Bethesda.

Mr. Baldwin was born in Stow, Mass. He lived in Nashville, Tenn., and Teheran, Iran, before moving to this area. He attended Brookmont Elementary, Western Junior High and Walt Whitman High School in Montgomery County. He earned his high school equivalency certificate while a patient at the Springfield Hospital in Sykesville.

Mr. Baldwin was a member of the Sycamore Island Club in Bethesda and the Randolph (N.H.) Mountain Club.

Survivors include his parents, Mr. and Mrs. George B. Baldwin, both of whom work at the World Bank, of the homes in Bethesda and Randolph, N.H., and a sister, Sara also of the homes.

The family suggests that expressions of sympathy be in the form of contributions to Hope House, a halfway house for recovering alcoholics, 210 Tulip Ave., Takoma Park, 20012, or to the Schizophrenia Association of Greater Washington, Wheaton Plaza, Office Building North, Wheaton, 20902.