What are the pharmacological treatments for constipation?

  There are two types of medication for constipation: Chinese herbal medicine and Western medicine. 
        How does western medicine treat constipation?
  1, flaccid constipation: with fecal discharge difficulties, abdominal pain, abdominal distension and other painful symptoms, the appropriate choice of laxatives.
  Stimulant drugs.
  Diacetin: 10mg per tablet, 1 to 2 tablets each time.
  Phenolphthalein: 0.1g per tablet, 1~2 tablets each time.
  Rhubarb: 2~5g each time, soak in boiling water and take.
  Senna: 3~5g each time, take after soaking in boiling water.
  Lubricating drugs.
  Liquid paraffin: 10~15mL each time.
  Glycerol: 10~20mL each time, enema.
  Swelling laxatives.
  Agar: 15 to 30mL each time.
  Methylcellulose: 2~5g per day.
  2, spasmodic constipation: anxiety and mental disturbance, you can take Valium 2.5 ~ 5mg, taken before bedtime. Relief of intestinal spasm available atropine 0 .6mg, 3 times a day, constipation can be stopped after improvement.
  3, rectal type constipation: can take stimulant laxatives, or with open cork (50% glycerin) 10 ~ 20mL enema. Fecal impaction available warm saline or soapy water enema.
  How does Chinese medicine treat constipation?
  Chinese medicine has better efficacy in treating constipation, but in the process of treatment, it should be treated according to the diagnosis and treatment of Chinese medicine.
  ①Deficiency of fluid: Patients suffer from blood deficiency after delivery, yin deficiency in old age, excessive sweating, heat accumulation in the intestines and stomach, excessive urination which injures yin and depletes fluid. Or addiction to thick and spicy food, which accumulates heat and injures fluids.
  Symptoms: constipation with astringent lumps, brown color, one line in 3-5 days, little discharge, foul taste, often accompanied by dizziness, fatigue, irritability, indigestion, red tongue with little fluid, thin pulse.
  Treatment: Nourish Yin and Blood, increase fluid and moisten the intestines.
  This formula is based on the following principles
  Liver qi stagnation type: all by the mood is not smooth, sadness and excessive thinking, little movement and long lying, can not regularly defecate, eating less, too fine, so that the qi is not smooth, liver qi stagnation, can not be normal to make the dregs conduction, internal stagnation and become disease. It is common in complications such as hemorrhoids, fistulas and fissures.
  Symptoms: no dry stools, but difficult to discharge, often with abdominal distension, anal drop, but often no stool discharge, or unclean discharge, or still feel the drop after discharge; accompanied by chest and fullness, dizziness and dullness, tiredness and fatigue, belching; moss is thin and greasy, pulse string thin.
  Treatment: De-stressing the liver and relieving depression, promoting clearing and lowering turbidity.
  This formula is based on the following formula: Si-wei-san with almonds, kouren and lycopodium.
  (3) Dryness and internal heat: caused by external wind-heat, dryness and fire, or excessive consumption of spicy and thick flavors, resulting in accumulation of heat in the intestines and stomach, which burns fluid; or due to the heat of the lungs and moved to the large intestine, resulting in constipation of stool.
  Symptoms: dry stools, abdominal distension and pain, sores on the mouth and tongue, red face and body heat, short and red urine, irritability and thirst; yellow and dry moss, slippery pulse.
  Treatment: Clearing heat and diarrhea of fire, breaking down Qi and clearing the lower part of the body.
  Recipe: Xiao Cheng Qi Tang plus or minus.
  What are the commonly used laxative herbs in daily life?
  The following herbs are often used in daily life to laxate the bowels, and most of them can be drunk as tea or eaten.
  Rhubarb: Clearing heat and detoxifying, laxative and laxative.
  Senna: clearing heat, laxative, defecating.
  Almond: moistens the lung and dissolves phlegm, promotes the lung and Qi, laxative and laxative.
  Cistanches: tonifies the kidneys and enhances the essence, laxative and relaxing.
  He Shou Wu: tonifies the kidneys, generates blood, laxative.
  Black sesame: tonifying the kidney, filling the essence, laxative.
  Radix Angelicae Sinensis: invigorates the blood, tonifies the blood, moistens the bowels and relaxes the bowels.
  Castor: Smooths the bowels and relaxes the bowels.