How to say "over-the-counter" in Japanese

• 店頭てんとうCommon
  no-adjectiveCovers 'over-the-counter' as a matter of place: the shop counter or storefront, where goods are handed over and business is done in person. In finance it likewise marks trading done outside an exchange.
  東京とうきょう株式市場かぶしきしじょうでは４５０社しゃ以上いじょうの株かぶが店頭てんとうで取り引とりひきされている。↗

  In the Tokyo stock market, stocks of about 450 companies are traded over the counter.
• 市販しはんCommon
  no-adjectiveCovers 'over-the-counter' for products sold commercially to the general public: store-bought, off-the-shelf, available to anyone without a prescription or special order. The emphasis is on availability, not on where the sale takes place.

Choose 市販 for over-the-counter products anyone can buy in shops — store-bought, no prescription needed — and 店頭 when the point is the shop counter itself: in-person sales or, in finance, off-exchange trading.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 店頭てんとうover-the-counter
• 市販しはんcommercial