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Vitamin B12 injections are generally safe, but some individuals may experience side effects, including: Pain or redness at the injection site Mild diarrhea Itching Nausea or vomiting Dizziness or headaches Hot flashes In rare cases, more serious reactions, such as allergic responses (rash, swelling, trouble breathing), can occur

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Raising two appetite-suppressing agents simultaneously makes it impossible to attribute side effects to either compound

Storage: Room temperature, protected from light

In addition, nasal sprays provide specifically focused distribution into the nasal passages, where peptides can act systemically or locally