I checked the science
Consult a doctor immediately if your urine is red, black, or dark brown or foamy, says Cleveland Clinic

Active Ingredients Concentration (per 3ml ampoule) Vitamin B1 (Thiamine HCl) 100 mg, Vitamin B2 (Riboflavin) 2 mg, Vitamin B6 (Pyridoxine HCl) 2 mg, Vitamin B12 (Cyanocobalamin) 5 mcg, Niacinamide 100 mg, D-Panthenol 5 mg Intended Use Supportive therapy in alcoholism, chronic illness recovery, post-operation, pregnancy, lactation Precautions Use under medical supervision only Administration Route Intramuscular (IM) / Intravenous (IV) Contraindications Known hypersensitivity to any component of the formulation Color Yellowish-orange solution Prescription Required Yes Shelf Life 2-3 years under recommended storage conditions Vitamin B Complex With Vitamin B12 Complex Injection Trade Information Minimum Order Quantity 300 Boxes Main Domestic Market All India Certifications WHO-GMP, ISO About Vitamin B Complex With Vitamin B12 Complex Injection Vitamin B Complex With Vitamin B12 Complex Injection Pack Size: 2ml Description: There are eight essential B complex vitamins including thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyridoxine (B6), cyanocobalamin (B12), biotin (B7) and folic acid B9)

Preclinical studies indicate that NNMT knockdown or inhibition can protect against diet-induced weight gain and improve metabolic parameters without reducing food intake [8] [9]
Write the correct units on a sticky note and put it on your fridge next to the vial