He was Baron by inheritance, a lawyer by profession, and an agriculturist by natural inclination. He held respected and responsible posts in Germany and enjoyed a life of position and influence. As a Doctor of Law, Dr. Boenninghausen practiced as a lawyer for some time and later became a judge. It was in 1827 that he developed purulent tuberculosis. Dr. Weihe cured him. The outstanding contributions to the advancement of Homoeopathy by Boenninghausen were:
- Classification of Characteristic Symptoms
- Compilation of the First Repertory of Anti-Psoric Remedies.
- Pocket Manual of Homeopathic Materia Medica
- Boenninghausen’s Characteristics Materia Medica and Repertory
- Lesser Writings of Boenninghausen
- New Manual of Homoeopathic Materia Medica