There is no such thing as the best famous formula for treating weakness of the spleen and stomach, but you can take Ginseng Ling Bai Zhu San, Six Gentlemen Soup, and tonifying the middle and benefiting the qi soup according to your condition. The specific effect varies from person to person.
Ginseng, Atractylodes Macrocephalae is composed of ginseng, atractylodes, poria, Chinese yam, white lentil, lotus seed, Job’s tear grains, sand kernel, platycodon, and licorice, which can treat weak spleen and stomach, poor appetite, shortness of breath, cough, and weakness of limbs. Adverse reactions and contraindications are not exact.
Liu Jun Zi Tang is composed of Radix Panax Ginseng, Poria, Rhizoma Atractylodis Macrocephalae, Radix et Rhizoma Glycyrrhizae, Pericarpium Citri Reticulatae and Semen Haematoxylinae, and it can treat weak spleen and stomach leading to poor appetite, abdominal distension, and scanty stools, with imprecise adverse effects and contraindications.
Tonifying the Middle Jiao Qi Tang is composed of Radix Codonopsis Pilosulae, Radix Astragali Praeparatae, Rhizoma Atractylodis Macrocephalae, Rhizoma Aspergillus, Radix Bupleurum Chinense, Radix et Rhizoma Glycyrrhizae Praeparatae, treating lethargy, malaise, poor appetite, and diarrhea resulting from weakness of the spleen and stomach and insufficiency of the middle jiao qi (deficiency of the qi of the spleen and stomach), with inexact adverse reactions and contraindications.
If you have symptoms, you should take the medicine under the guidance of a medical professional, do not take the medicine blindly on your own to avoid delaying the condition or producing adverse reactions.