Effectiveness of Tricortin 1000 in Patients Affected by Chronic Low Back Pain

Tricortin 1000 \[2 mL ampoules containing 12 mg of phospholipids and 1 mg of Vitamin B12 (Cyanocobalamin)\] will be administered intramuscular on the gluteus, once daily (24 hours apart), for 15 days starting from the evening of Day 0 (visit 2) plus Diclofenac sodium medicated plaster placebo will be applied twice daily (12 hours apart) for 15 days starting from the evening of Day 0 (visit 2), i.e. 30 applications.

Diclofenac sodium 140 mg medicated plaster (Itami®) will be applied twice daily (12 hours apart) for 15 days starting from the evening of Day 0 (visit 2), i.e. 30 applications plus Tricortin 1000 placebo (2 mL ampoules) will be administered intramuscular on the gluteus, once daily (24 hours apart), for 15 days starting from the evening of Day 0 (visit 2).

Tricortin 1000 placebo (2 mL ampoules) will be administered intramuscular on the gluteus, once daily (24 hours apart), for 15 days starting from the evening of Day 0 (visit 2) plus Diclofenac sodium medicated plaster placebo will be applied twice daily (12 hours apart) for 15 days starting from the evening of Day 0 (visit 2), i.e. 30 applications.