There is no official recommendation for dosing CBD but most people are taking 10-100 MG daily
Always speak to a health professional
Factors to think about :
Body weight 
Metabolism

  • Micro dose is a low level introductory range of .5-20 mg of CBD/Dose/day. recommended for 1st time CBDers.  Effective with sleep, headache, mood disorders, nausea, stress and metabolic disorders
  • Standard Dose is a mid range 10-100 mg CBD/Dose/Day. Shown to have effect for pain, inflammation, autoimmune disorders, anxiety, depression, arthritis, autism IBS,
  • Macro Dose, therapeutics, are high range 100-800 mg CBD/Dose/Day This range has shown effects of treatments for cancer, epilepsy, seizure disorders, liver disease, and more severe life threatening conditions.