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Japan market screening · Therapeutic class
抗パーキンソン剤 · Japan Standard Commodity Classification
23 molecules in this class are marketed in Japan across 136 products. 9 of those products are not shipping normally today — 6.6% 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 |
|---|---|---|---|---|
| Pramipexole Hydrochloride Hydrateプラミペキソール塩酸塩水和物 | 26 | 10 | 4 | |
| Ropinirole Hydrochlorideロピニロール塩酸塩 | 22 | 7 | 1 | |
| Amantadine Hydrochlorideアマンタジン塩酸塩 | 14 | 6 | — | |
| Levodopa / Carbidopa Hydrateレボドパ・カルビドパ水和物 | 10 | 5 | 2 | |
| Trihexyphenidyl Hydrochlorideトリヘキシフェニジル塩酸塩 | 10 | 8 | 1 | |
| Biperiden Hydrochlorideビペリデン塩酸塩 | 7 | 4 | 1 | |
| Entacaponeエンタカポン | 5 | 5 | — | |
| Rotigotineロチゴチン | 5 | 1 | — | |
| Bromocriptine Mesilateブロモクリプチンメシル酸塩 | 4 | 4 | — | |
| Cabergolineカベルゴリン | 4 | 2 | — | |
| Droxidopaドロキシドパ | 4 | 2 | — | |
| Levodopa / Benserazide Hydrochlorideレボドパ・ベンセラジド塩酸塩 | 4 | 3 | — | |
| Pergolide Mesilateペルゴリドメシル酸塩 | 4 | 2 | — | |
| Levodopaレボドパ | 3 | 1 | — | |
| Selegiline Hydrochlorideセレギリン塩酸塩 | 3 | 3 | — | |
| Biperiden Lactate乳酸ビペリデン | 2 | 2 | — | |
| Levodopa / Carbidopa Hydrate / Entacaponeレボドパ・カルビドパ水和物・エンタカポン | 2 | 1 | — | |
| Rasagiline Mesilateラサギリンメシル酸塩 | 2 | 1 | — | |
| Apomorphine Hydrochloride Hydrateアポモルヒネ塩酸塩水和物 | 1 | 1 | — | |
| Foslevodopa / Foscarbidopa Hydrateホスレボドパ・ホスカルビドパ水和物 | 1 | 1 | — | |
| Istradefyllineイストラデフィリン | 1 | 1 | — | |
| Opicaponeオピカポン | 1 | 1 | — | |
| Safinamide Mesilateサフィナミドメシル酸塩 | 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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