"R" is the abbreviation of REGISTER, and the word before R is a registered trademark.
For the same medicine and specifications, different manufacturers have different registered trademarks. Therefore, whether they can be substituted for each other depends on the specific ingredients, formulations and specifications of the medicine. The ingredients, formulations and specifications include medicines. If the chemical names are the same, they are the same drug and can be interchanged without looking at the registered trademark.
The full English name of TM: trade mark trademark logo, and the full English name of R: register is a registered trademark logo. They are all registered marks. At the beginning, TM was used during the period from getting the "Notice of Acceptance" issued by the National Trademark Office to getting the "Trademark Registration Certificate", indicating that it had filed an application and had priority to use the existing trademark.
Extended information:
Benefits of registering a trademark:
1. A registered trademark indicates the uniqueness of the product. In the country and even the world, only the company that owns the trademark can use it, and no other company can use it without authorization. This protects corporate trademarks from infringement and brand value from theft to a certain extent.
2. Registering a trademark can also form a unique brand image wherever you see such a trademark. It can remind consumers of this product and create a certain sense of market identity.
3. Registering a trademark can take this as an opportunity to conduct international trade, gain certain international recognition, and then form a certain international status.
4. After registering a trademark, if the trademark is no longer used in the future, it can be transferred or mortgaged.
5. From a national legal perspective, a registered trademark can protect your trademark from infringement and use by others, and can maintain the credibility and image of the product.
Reference: Baidu Encyclopedia-Registered Trademark