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Japan market screening · Therapeutic class
代謝拮抗剤 · Japan Standard Commodity Classification
15 molecules in this class are marketed in Japan across 71 products. 3 of those products are not shipping normally today — 4.2% of the class. Supply status is reported to the Ministry of Health, Labour and Welfare and updated daily.
Ordered by how many products compete. Constrained means limited supply or supply suspended; supply suspended does not mean discontinued.
| Molecule | Products | Companies | Constrained | Supply mix |
|---|---|---|---|---|
| Pemetrexed Sodium Hemipentahydrateペメトレキセドナトリウムヘミペンタ水和物 | 24 | 7 | 1 | |
| Gemcitabine Hydrochlorideゲムシタビン塩酸塩 | 10 | 3 | 2 | |
| Cytarabineシタラビン | 9 | 2 | — | |
| Capecitabineカペシタビン | 7 | 7 | — | |
| Fluorouracilフルオロウラシル | 5 | 2 | — | |
| Tegafur / Uracilテガフール・ウラシル | 4 | 1 | — | |
| Enocitabineエノシタビン | 3 | 1 | — | |
| Fludarabine Phosphateフルダラビンリン酸エステル | 2 | 1 | — | |
| Clofarabineクロファラビン | 1 | 1 | — | |
| Cytarabine Ocfosfate Hydrateシタラビン オクホスファート水和物 | 1 | 1 | — | |
| Doxifluridineドキシフルリジン | 1 | 1 | — | |
| Hydroxycarbamideヒドロキシカルバミド | 1 | 1 | — | |
| Mercaptopurine Hydrateメルカプトプリン水和物 | 1 | 1 | — | |
| Nelarabineネララビン | 1 | 1 | — | |
| Pralatrexateプララトレキサート | 1 | 1 | — |
Products counts every marketed product across all strengths and forms, not companies. Companies is the number of companies marketing that molecule; the same company may appear under several molecules, so the column does not add up to a class total. Market size sits on each molecule's own page, valued at national price rather than transaction price. Figures are as at 2026-08-28.
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