- Traditional Chinese Character(HanT):
內啡
- Simplified Chinese Character(HanS):
内啡
- Bopomofo(Mandarin Phonetic Symbols): ㄋㄟˋ ㄈㄟ (ㄋㄈ)
- Bopomofo(Zhuyin Keyboard Input/IME): "so4zo " (so4zo)
- 「内啡」的漢語拼音: Nei4 Fei1
- (ASCII) Hanyu Pinyin: "neifei" "Nei4Fei1" "Nei4 Fei1" (NF)
- (Latin) Hànyǔ Pīnyīn: NèiFēi [ Nèi Fēi ]
- (英文翻譯) English Translation: "Endorphins"
- (西語翻譯) Traducción Español: "endorfinas"
- (日文翻譯) 日本語翻訳: "エンドルフィン"