Vitamin B12 (like 2B12 tablets) is generally safe for most adults, but whether you can take it for one month depends on your individual needs, current B12 levels, and any medical conditions, so please follow your doctor's advice.

The safety and dosage of B12 tablets for a 12‑year‑old child are not well established. A paediatrician should evaluate the child’s medical needs and prescribe the appropriate form and dose if supplementation is required. Do not adjust the dose yourself; the doctor will determine the safest and most suitable option.

You should only take as many 2B12 tablets as prescribed by your doctor, which is usually one tablet per day. In some cases of diagnosed vitamin B12 deficiency, a doctor may recommend up to 2 tablets in 24 hours, but this should never be adjusted without medical supervision. Always follow your healthcare provider’s instructions for safe and effective use.

2 B12 tablets contain a mix of B vitamins, including methylcobalamin, adenosylcobalamin, B1, B2, B6, and folic acid. They are generally safe for daily use when prescribed for nerve health or vitamin deficiencies. Long-term use is safe if advised by a doctor, but it’s important to monitor vitamin levels through regular blood tests. Always follow your doctor’s instructions, avoid self-medication, and go for periodic check-ups to ensure safe and effective use.

Weight gain is not a known or direct side effect of 2B12 tablets. However, in rare cases, some individuals may experience slight weight changes indirectly due to improved appetite, enhanced energy levels, or better overall metabolic function following correction of vitamin deficiencies. These effects are not typical and are not experienced by most users. If you observe significant or unexpected weight changes while taking 2B12. In such cases, it is advisable to consult a healthcare professional for personalised guidance.