How many herbs are there in Shennong Bencao Jing?

The Shennong's Herbal Classic includes a total of 365 medicinal substances. It is recommended that patients use medications rationally under the guidance of doctors but should not use them privately. The Shennong's Herbal Classic was written by many medical experts during the Han Dynasty and is one of the Four Great Classical Texts of Traditional Chinese Medicine. Among them, there are 252 types of plant medicines, 67 types of animal medicines, and 46 types of mineral medicines. Additionally, it compiled the mnemonic "365 degrees correspond to 365 days in a year, one degree for each day." Furthermore, based on the properties and purposes of the medicines, they are classified into three grades: superior, middle, and inferior. The superior grade includes 120 substances, generally non-toxic. The middle grade also contains 120 substances, some of which are toxic, while others are not. The inferior grade has 125 substances, most of which are toxic. The Shennong's Herbal Classic introduces the concept of syndrome differentiation in medication use and provides specific regulations on dosage and timing. Additionally, it summarizes seven relationships between medicines, including mutual reinforcement, mutual assistance, mutual restraint, mutual antagonism, mutual destruction, and acting alone. Besides, the Shennong's Herbal Classic records the indications and categories of various medicines, mainly covering internal, surgical, gynecological, pediatric, and ENT diseases. In daily life, if there is a need for medication, it should be used under the syndrome differentiation guidance of professional traditional Chinese medicine practitioners. Avoid self-medication blindly to prevent serious adverse reactions.