This product contains vitamin B12 at a dose of 1000µg per capsule. It is important to observe the following precautions when using it: 1. Consult your doctor before starting to take vitamin B12 supplements, especially if you have a medical condition or are taking other medications. 2. Follow the manufacturer's recommended dosage instructions or those provided by your doctor. Do not exceed the recommended dosage. If you experience any side effects or allergic reactions, such as rash, swelling, or difficulty breathing, discontinue use and seek medical attention immediately. 4. Keep this product out of the reach of children and store in a cool, dry place. Remember that vitamin B12 is essential for proper nervous system function and red blood cell production, but it is always important to use supplements under the supervision of a healthcare professional. If you have any further questions, do not hesitate to consult your pharmacist.