TCTR20190303001.

Study name	A comparison of analgesic efficacy between amitriptyline and mianserin in chronic low back pain patients: a randomized double‐blind controlled trial
Methods	Double‐blind, placebo‐controlled, parallel, 2‐arm RCT
Participants	18 ‐ 65 years old Chronic low back pain for > 3 months with NRS > 4 Target: 60
Interventions	Amitriptyline 10‐50 mg Mianserin 10‐50 mg
Outcomes	Pain intensity Quality of life
Starting date	01 November 2018
Contact information	Suratsawadee Wangnamthip Bangkok Noi 10700 Bangkok Thailand suratsawadee.wang@gmail.com
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