Quick comparison of B12 forms used in tirzepatide compounds Cyanocobalamin - Most stable in solution, requires body conversion, contains trace cyanide group, produces pink color, lowest cost for pharmacies Methylcobalamin - Bioactive form, light-sensitive and less stable, no conversion needed, produces pink color, slightly higher cost Hydroxocobalamin - Precursor form, moderate stability, used less commonly in compounds, produces pink/red color, intermediate cost All three forms produce the same characteristic pink color in the tirzepatide solution
By drug class , the long-acting GLP-1 agonists segment led the GLP-1 market with a 63% share in 2025 because they have one important feature: they are administered only once per week
The follow-up values for weight were recorded at 1 year post index (360 days post index 90 days, taking the value closest to day 360), with change in weight (kg) evaluated by subtracting the baseline value from the follow-up value
Larger vial sizes may offer a different value profile than starter kits, while bundles can make the purchase path simpler by grouping relevant research-use items together
