This 100mg vial is the higher-quantity option, priced below two separate 50mg vials suited to extended research programs or labs requiring larger working quantities
This means that it is not possible to overdose on vitamin B12, and as far as we know there is no upper limit on the amount of B12 that can be taken safely by an otherwise healthy person

basic mechanisms and clinical applications American Academy of Anti-Aging Medicine Thymosin beta 4 (Tb4) professional monograph (indications, dosage) Bachem Technical Note Peptide stability and handling guidelines International Journal of Clinical Pharmacy (2013) Evaluation of maximum beyond-use-date stability of peptide solutions CDC Vaccine administration: subcutaneous route (angle, site rotation guidance) WADA Prohibited List (2024) Growth factors and peptides prohibited in sport Arthroscopy (2025) Emerging use of BPC-157 in orthopaedic sports medicine: a systematic review PubMed (2010) Randomized, placebo-controlled, single and multiple dose study of intravenous thymosin beta4 in healthy volunteers CDC (Subcut Injection PDF) Technique diagram and site guidance for subcutaneous injections NCBI Bookshelf Administration of parenteral medications: best practices Additional Research and Background These sources provide related context and are not presented as support for a specific statement above

Dukungan Sistem Kekebalan Tubuh: Glutathione berperan penting dalam memperkuat sistem imun dan meningkatkan daya tahan tubuh terhadap infeksi dan penyakit
There is a need for larger, longer studies to fully understand the safety profile
Proc Natl Acad Sci U S A 100:68436848