Latar Belakang Dari pengeluaran Rumah Sakit Jiwa “Soeharto Heerdjan” tahun 2004, untuk pembelanjaan khusus obat sebesar 48,5% total pembelanjaan barang farmasi. Belum adanya perencanaan dan pengendalian yang sistematis dan efektif. Tujuan Menyusun perencanaan dan pengendalian obat-obat yang lebih terarah dan sistematis di Instalasi Farmasi dengan menentukan jumlah pemesanan yang optimum dan ekonomis. Metode Merupakan penelitian operasional riset, dengan analisis kuantitatif menggunakan Analisa ABC, Analisa ABC Indeks Kritis, metode peramalan Time Series Forecasting dan perhitungan EOQ dan ROP. Hasil Terdapat 11 item obat yang termasuk kelompok A Hasil Analisa ABC Indeks Kritis. Jadi dengan mengawasi 11 item ini sudah mengontrol hampir 70% dari total investasi. Untuk Prakiraan kebutuhan dengan 2 metode peramalan yaitu Exponential Smoothing With Linear Trend dan Double Exponential Smoothing With Linear Trend. Hasil perhitungan EOQ, Rumah Sakit Jiwa “Soeharto Heerdajn” dapat menghemat sebesar Rp. 6.108.717,- dari total biaya yang harus dikeluarkan. Kesimpulan Untuk perencanaan obat menggunakan EOQ dan ROP dengan prakiraan kebutuhan menggunakan metode peramalan dan untuk pengendalian menggunakan Analisa ABC dan Analisa ABC Indeks Kritis. Kata Kunci: Analisis Persediaan Obat

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Background In “Soeharto Heerdjan” Mental Hospital the total of hospital expenses is 35% is for pharmaceutical goods purchase, and of the total, 47,8% is for drug expense. This Hospital also does not have a good planning in budgeting. Objectives Results of this research is making the drug planning and control that is more oriented and systematic at its Pharmaceutical Installation with determining the number of optimum and economical drug order Methods This is a Riset Operational Research, with Kuantitative Analysis and used ABC Analysis and ABC Critical Index, methods of estimating test of Time Series Forecasting, with the EOQ and ROP calculation. Results To control the drug stock, ABC Analysis and ABC Critical Index is conducted so results of Group A is obtained of ABC Critical Index consisting of 11 drug items. With controlling 11 drug items in the Group A have included 70% of the all investment values. Two methods of estimating test of Time Series Forecasting is conducted to estimate the needs for the quarterly period . Total value of total expenses / Cost of EOQ calculation result gives much better “Soeharto Heerdjan” Mental Hospital result saving Rp. 6.108.717,- Conclusions To have a good drugs planning, we can use EOQ and ROP with methods of estimating test of Time Series Forecasting is conducted to estimate the needs and for a good drugs controling, we can use ABC Analysis and ABC Critical Index. Keywords. Analysis of Drugs Planning