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Japan market screening · Therapeutic class
催眠鎮静剤，抗不安剤 · Japan Standard Commodity Classification
32 molecules in this class are marketed in Japan across 296 products. 27 of those products are not shipping normally today — 9.1% 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 |
|---|---|---|---|---|
| Zolpidem Tartrateゾルピデム酒石酸塩 | 52 | 23 | 2 | |
| Eszopicloneエスゾピクロン | 45 | 15 | — | |
| Diazepamジアゼパム | 23 | 9 | 2 | |
| Brotizolamブロチゾラム | 16 | 11 | — | |
| Quazepamクアゼパム | 14 | 7 | 2 | |
| Nitrazepamニトラゼパム | 13 | 6 | 3 | |
| Tandospirone Citrateタンドスピロンクエン酸塩 | 12 | 4 | 4 | |
| Alprazolamアルプラゾラム | 10 | 5 | 2 | |
| Bromazepamブロマゼパム | 10 | 2 | 4 | |
| Chlordiazepoxideクロルジアゼポキシド | 10 | 3 | 3 | |
| Triazolamトリアゾラム | 10 | 5 | 2 | |
| Ethyl Loflazepateロフラゼプ酸エチル | 9 | 4 | 1 | |
| Flunitrazepamフルニトラゼパム | 9 | 4 | — | |
| Phenobarbital Sodiumフェノバルビタールナトリウム | 8 | 3 | — | |
| Phenobarbitalフェノバルビタール | 7 | 2 | 1 | |
| Zopicloneゾピクロン | 6 | 3 | — | |
| Dexmedetomidine Hydrochlorideデクスメデトミジン塩酸塩 | 5 | 3 | — | |
| Estazolamエスタゾラム | 5 | 2 | — | |
| Lorazepamロラゼパム | 5 | 2 | — | |
| Medazepamメダゼパム | 4 | 2 | — | |
| Tofisopamトフィソパム | 4 | 4 | 1 | |
| Chloral Hydrate抱水クロラール | 3 | 1 | — | |
| Cloxazolamクロキサゾラム | 3 | 1 | — | |
| Oxazolamオキサゾラム | 3 | 1 | — | |
| Lormetazepamロルメタゼパム | 2 | 2 | — | |
| Rilmazafone Hydrochloride Hydrateリルマザホン塩酸塩水和物 | 2 | 1 | — | |
| Clorazepate Dipotassiumクロラゼプ酸二カリウム | 1 | 1 | — | |
| Flurazepam Hydrochlorideフルラゼパム塩酸塩 | 1 | 1 | — | |
| Pentobarbital Calciumペントバルビタールカルシウム | 1 | 1 | — | |
| Potassium Bromide臭化カリウム | 1 | 1 | — | |
| Sodium Bromide臭化ナトリウム | 1 | 1 | — | |
| Triclofos Sodiumトリクロホスナトリウム | 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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