Relative bacterial loads (left) were normalized to the -Rif controls
If you suspect a cobalt allergy (which is extremely rare), have your doctor supervise an intradermal test dose first
However, for multi-dose vials like a 5mg semaglutide vial that will be accessed over multiple weeks, bacteriostatic water is strongly recommended
In rare cases, some people might have severe side effects like: Skin rash, itching, or hives Swelling of the face, lips, or tongue Chest pain or tightness Blue tint to the skin Difficulty breathing or wheezing A swollen, painful area on the leg Dizziness If you experience any of the above side effects, reach out to a healthcare provider immediately
Jaramillo, M
1969 [cited 2025 Dec 11];165:45465