---
title: "ER-KANG: Dihydroxypropyl Theophylline Injection approved for registration"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/250387939.md"
description: "ER-KANG recently obtained the \"Drug Registration Certificate\" issued by the National Medical Products Administration, and its dihydroxypropyl theophylline injection has been approved for registration. This medication is a smooth muscle relaxant that has the effect of dilating the bronchi and coronary arteries, suitable for conditions such as bronchial asthma and wheezing bronchitis, especially for patients with tachycardia"
datetime: "2025-07-28T10:20:06.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/250387939.md)
  - [en](https://longbridge.com/en/news/250387939.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/250387939.md)
---

# ER-KANG: Dihydroxypropyl Theophylline Injection approved for registration

According to the Zhitong Finance APP, ER-KANG (300267.SZ) announced that the company recently received the "Drug Registration Certificate" issued by the National Medical Products Administration, and the company's dihydroxypropyl theophylline injection has been approved for registration.

The announcement shows that dihydroxypropyl theophylline is a smooth muscle relaxant that has the effect of dilating bronchi and coronary arteries, as well as a diuretic effect. It is stable in gastric juice, and its bronchodilator effect is similar to that of aminophylline, making it particularly suitable for patients with tachycardia. It is applicable for bronchial asthma, wheezing bronchitis, obstructive pulmonary emphysema, etc., to relieve wheezing symptoms, and is also used for asthma caused by cardiogenic pulmonary edema

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