What’s wrong with taking Salivary Control Pills that don’t work?

The lack of efficacy in taking Salivary Control Dan may be due to problems in recognizing the symptoms, and the medicine is not right for the patient, but also related to the patient’s physique, condition and other factors.
Salivation Control Dan (Three Causes and One Symptom Formulae) is composed of Gan Sui, Dajia and Bai Zhi Zi, in which Gan Sui and Dajia diarrhea water and expel swelling, eliminate swelling and dissipate lumps and knots, while Bai Zhi Zi warms the middle and disperses cold (disperses cold evils by warming the spleen and stomach). It has the efficacy of dispelling phlegm and expelling drinks.
The treatment of phlegm-drinking (pathological products formed by water-liquid metabolism disorders) in the diaphragm up and down, suddenly neck, chest and back, waist and hips pain intolerable, tendons and bones pulling pain (tendon and bone pain), go easy to be uncertain (go and run uncertainly).
Or cold paralysis of hands and feet, or intolerable headache, or drowsiness, or tasteless diet, phlegm and saliva, phlegm in the throat at night, and salivation (drooling).
The contraindications, precautions and adverse effects of this medicine are not known.
Before using Chinese herbal medicines, it is necessary to have the diagnosis made by a doctor and use it under the doctor’s guidance so as to avoid improper use of medicines and delay of the condition.