Download FREE Practo app
Get ₹200 HealthCash
Vitamin b12
My vitamin b12 is 100. Doctor has given metmax tablet for 30 days . I want to ask 30days b12 will increase and when i should repeat blood test
Answers (23)
B12 replacement is a life long treatment. Once your levels are better, then repeat blood test once a year.
All the best.
WWW.JGSR-HEALTH-EDUCATION.IN
Answered
Let others know if this answer was helpful
Didn't find the answer you are looking for?
Talk to experienced doctor online and get your health questions answered in just 5 minutes.
Your VITAMIN B12 is very low. Take Tab Neurokind- 1 tab once daily after food for 3 months. Then repeat Vitamin B12 blood test and consult.
Answered
Let others know if this answer was helpful
Your B12 levels are significantly low , but taking metmax fir 30 days should show initial improvement but to reach appropriate levels it may take 2 to 3 months , keep having follow up tests every month to keep track of increase and if insufficient can go for injection or sublingual route .
Next Steps
finish course , have follow up and then consult for further treatment plan
Answered
Let others know if this answer was helpful
A vitamin B12 level of 100 pg/mL is significantly low.
With oral methylcobalamin (Metmax), levels usually start improving within 2–4 weeks, but 30 days may not be sufficient to fully replenish body stores, especially if deficiency is severe
Advice
Continue B12 supplementation for at least 2–3 months.
If symptoms like tingling, numbness, weakness, or fatigue are present, injectable B12 is preferred initially, followed by oral maintenance.
Repeat serum B12 after 6–8 weeks of treatment.
Target B12 level should be >300–400 pg/mL for neurological safety.
Identify cause (dietary deficiency, vegetarian diet, gastritis, malabsorption) if levels do not improve like ogd scopy and pernicious anemia
Next Steps
wait for 2 months and then repeat test
Answered
Let others know if this answer was helpful
Vit b12 ver very low.
Prescribed medicine is a nutritional supplement.
You need neurokind od one at night after dinner for 2-3 months. It's a b12 only.
Answered
Let others know if this answer was helpful
Your B12 level is very low , now taking oral or sublingual tablet or start with injectable then shifting to oral tablet depends on are symptomatic or asymptomatic
Answered
Let others know if this answer was helpful
Your vitamin b 12 level is significantly low, you may need that tablet for atleast 2-3 months.If you are symptomatic, consider injection form vitamin b 12 initially
Answered
Let others know if this answer was helpful
A Vitamin B12 level of 100 pg/mL is significantly low (normal usually ~200–900).
At this level, symptoms may include:
• Fatigue
• Tingling or numbness
• Leg heaviness
• Brain fog
• Irritability
If your doctor prescribed Metmax (usually methylcobalamin combination), that is appropriate.
In most cases:
✔ 30 days of oral B12 can increase levels
BUT
✔ The rise depends on absorption
If the deficiency is due to:
• Dietary lack → oral tablets usually work well
• Gastritis / malabsorption → injections may be needed
A level of 100 is quite low, so monitoring response is important.
Next Steps
Continue tablets for 30 days as prescribed.
Then:
✔ Repeat Vitamin B12 level after 4–6 weeks of starting treatment
✔ Also check CBC (to see if anemia improves)
If after 30 days:
• B12 rises above 300 → continue maintenance dose
• B12 still low (
Health Tips
• Take B12 after food (better tolerance)
• Avoid taking it with strong tea/coffee immediately
• If vegetarian, long-term supplementation may be needed
• Check Vitamin D as well (often low together)
• Don’t stop treatment once level becomes normal — maintenance is important
If you are experiencing symptoms like tingling or weakness, early correction is important to prevent nerve damage.
If you share:
• Are you vegetarian?
• Any numbness or anemia?
• Any history of gastritis or acidity?
I can guide you whether oral tablets are enough or injections would be better.
Since your level is 100 (quite low), proper follow-up is essential to prevent long-term nerve complications — I recommend repeating levels in 4–6 weeks and reviewing with your physician.
Answered
Let others know if this answer was helpful
Your B12 is low, and taking the tablet daily should improve it.
Next Steps
Repeat the test after 4–6 weeks. Consult me for proper diagnosis and treatment.
Answered
Let others know if this answer was helpful
After 30 days, get serum vit b12 levels checked. As per results, it can be decided whether to continue or not and for how many days.
Answered
Let others know if this answer was helpful
I totally understand your concern. Before suggesting treatment, I would like to ask a few questions to ensure the correct management can be provided.
Contact me on Practo or WhatsApp chat.
92469306sevenfour
Dr. Harichandana,
MBBS, MD (General medicine)
Answered
Let others know if this answer was helpful
A Vitamin B12 level of 100 is considered low and can cause symptoms such as fatigue, weakness, numbness, tingling sensations, and sometimes memory or mood changes. Treatment with methylcobalamin supplements like MetaMax is commonly prescribed to correct this deficiency.
In most cases, Vitamin B12 levels do start improving within a few weeks of treatment. Many patients show a good response within 4–8 weeks, depending on the severity of deficiency, dietary intake, and absorption in the body.
Since you are taking thyroxine, it is also important to ensure that both conditions are monitored properly, as thyroid disorders can sometimes be associated with vitamin deficiencies.
Generally, repeat testing for Vitamin B12 is advised around 6 to 8 weeks after starting treatment to assess response and decide whether continuation or change in therapy is required.
Meanwhile, you may:
✔ Continue medication as prescribed
✔ Include Vitamin B12 rich foods such as dairy products, eggs, and fortified foods (if diet permits)
✔ Avoid stopping supplements without medical advice
Hope this helps. Take care and stay healthy.
Next Steps
If you wish, you may consult with your complete medical history, diet pattern, thyroid reports, and current symptoms so that a personalised treatment duration and follow-up plan can be suggested.
Health Tips
If you experience persistent weakness, numbness, imbalance while walking, or severe fatigue, it is advisable to seek medical evaluation earlier.
Answered
Let others know if this answer was helpful
You need to repeat blood test for recheck the level of b12.
Answered
Let others know if this answer was helpful
Dear Patient,
A vitamin B12 level of 100 is considered low, and your doctor has appropriately prescribed Metmax (or equivalent B12 supplement).
What you should do
- Take the tablet daily as prescribed for 30 days
- Maintain a balanced diet including eggs, dairy, and fortified foods if possible
- Avoid skipping doses
Expectations
- B12 levels usually start improving within 4–6 weeks, but complete normalization may take 1–3 months, depending on absorption and body stores
Follow-up
- Repeat blood test 4–6 weeks after completing the 30-day course to assess improvement
- Continue supplementation if levels remain low, as advised by your doctor
consult me
- Persistent fatigue, tingling, or numbness in hands/feet
- Any new neurological symptoms
For further guidance and personalized treatment you may consult me on Practo anytime.
Answered
Let others know if this answer was helpful
Articles you may like
Tell us what's troubling you
Disclaimer : The content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding your medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.