Individuals with any of the following conditions should consult with their healthcare provider before use and may not be eligible for treatment: Personal or family history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN2) Known hypersensitivity to GLP-1 or GLP-1/GIP medications or any formulation components, including additives such as vitamin B12 or cobalt Pregnancy or plans to become pregnant (therapy should be discontinued at least two months prior to planned pregnancy) Diabetic ketoacidosis (DKA) or type 1 diabetes Severe gastrointestinal disease (including gastroparesis or active inflammatory bowel disease) Severe cardiovascular disease (including unstable coronary artery disease or heart failure) Recent bariatric or gastrointestinal surgery within the past six months Active cancer currently undergoing chemotherapy or radiation treatment This list is not comprehensive

Behnamifar A, Rahimi S, Karimi Torshizi MA et al (2021) Effects of dietary alpha-lipoic acid supplementation on the seminal parameters and fertility potential in aging broiler breeder roosters
That doesnt mean its useless
Healthcare pros and patients need to follow key steps
However, some rare side effects of too much vitamin B12 can include: Headache Weakness Nausea Diarrhea Tingling sensations in the hands and feet Allergic reactions or skin rash (uncommon) When To Seek Medical Advice Risk of vitamin B12 deficiency: Groups at a higher risk of vitamin B12 deficiency include older adults, people who only eat plant-based foods (vegans and vegetarians), and those with certain chronic conditions (gastrointestinal disorders that can affect vitamin absorption)
Sermorelin was first synthesized by ConjuChem Technologies and is considered the predecessor of CJC-1295