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Formylin Injection

Vitamin B12 (500mcg)
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Formylin Injection is a medicine used to treat and prevent vitamin B12 deficiency. Vitamin B12 is essential for the healthy functioning of nerves, the production of red blood cells, and the overall health of the brain and spinal cord. It works by replenishing low levels of vitamin B12 in the body.

Written By Dr. Subita Alagh, BDS,
Reviewed By Dr. Rajeev Sharma, MBA, MBBS,
Last updated on 25 Nov 2025 | 03:05 PM (IST)
₹48.2 MRP ₹53.4410% off 
 
 
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Formylin Injection image
Formylin Injection image

Product introduction

Formylin Injection is usually given by a doctor or a nurse into a muscle, often in the upper arm or thigh. The number of doses and how often you receive them will depend on how severe your deficiency is and how your body responds to treatment. For maximum benefits, follow the schedule prescribed by your doctor without missing any doses. Along with the treatment, eat a balanced diet that includes foods rich in vitamin B12.


There is limited data on the common side effects of Formylin Injection. However, some may experience mild side effects such as pain or redness at the injection site, headache, or nausea. These are usually temporary and go away on their own. If you develop any symptoms that persist or worsen, consult your doctor.


Before starting Formylin Injection, inform your doctor if you have any medical conditions, especially related to the liver, kidneys, or if you have a history of allergies. Let your doctor also know if you are pregnant, breastfeeding, or taking any other medications or supplements, as some may interact with Formylin Injection. Do not take additional vitamin B12 supplements without your doctor’s advice while receiving this injection.

Uses of Formylin Injection

  • Treatment and prevention of Vitamin B12 deficiency

Benefits of Formylin Injection

Treatment and prevention of Vitamin B12 deficiency
Vitamin B12 deficiency can lead to tiredness, weakness, anemia, and nerve-related problems such as tingling or numbness. Formylin Injection helps restore normal levels in the body, improving energy, supporting red blood cell formation, and maintaining healthy nerve function.

Side effects of Formylin Injection

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them
Common side effects of Formylin
  • No common side effects seen

How to use Formylin Injection

Your doctor or nurse will give you this medicine. Kindly do not self administer.

How Formylin Injection works

Formylin Injection helps restore vitamin B12 levels in the body and helps improve nerve health, reduce symptoms like numbness or tingling, and correct anemia caused by vitamin B12 deficiency.

Quick tips

  • Do not try to self-inject Formylin Injection unless trained, as you end up damaging your blood vessels severely.
  • Inform your doctor if you have Leber's disease, any history of optic nerve issues, or vision problems.
  • Let your doctor know if you are on potassium supplements or diuretics, as they may affect the levels of this medicine.
  • Report symptoms like swelling, dizziness, or chest discomfort promptly, as these could signal rare allergic reactions.
  • Keep a record of your medicine schedule, especially if you are on long-term Formylin Injection therapy for a chronic deficiency.

Safety advice

Alcohol

Alcohol

CAUTION
Alcohol should be used with caution while taking Formylin Injection.
Pregnancy

Pregnancy

CONSULT YOUR DOCTOR
The safety of Formylin Injection during pregnancy has not been established. There are no adequate and well-controlled studies in pregnant women, and animal data on reproductive toxicity are insufficient. Your doctor will weigh the benefits and any potential risks before prescribing.
Breast feeding

Breast feeding

SAFE IF PRESCRIBED
Available human data suggest that the drug does not pass into breast milk in clinically significant amounts and is unlikely to harm the infant.
Driving

Driving

SAFE
Formylin Injection does not usually affect your ability to drive.
Kidney

Kidney

There is no data available. Please consult doctor before consuming the drug.
Liver

Liver

There is no data available. Please consult doctor before consuming the drug.

Frequently asked questions

Formylin Injection is a medicine used to treat vitamin B12 deficiency in the body. Vitamin B12 is important for growth, cell reproduction, blood formation, and protein and tissue synthesis. It also helps to treat anemia, fatigue, and numbness or tingling in hands and feet.
Deficiency of vitamin B12 could be due to poor dietary intake, pernicious anemia (as it leads to poor absorption of vitamin B12) and certain types of stomach related surgeries, such as weight loss surgery or any surgery of the intestines). Besides these, there are some medications which can also lead to its deficiency and some disorders of the immune system (those that cause a decrease in the immunity of our body), such as Lupus or Graves’ disease. Consult your doctor if you have or ever had any of these issues.
Formylin Injection is effective if used in the dose and duration advised by your doctor. Do not stop taking it even if you see improvement in your condition. If you stop using Formylin Injection too early, the symptoms may return or worsen.
Formylin Injection should be taken in the dose and duration advised by your doctor. It is advised to take Formylin Injection with food preferably at the same time each day to avoid the chances of missing a dose.
If you forget a dose of Formylin Injection, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and take the next scheduled dose in the prescribed time. Do not double the dose to make up for the missed one as this may increase the chances of developing side effects.
Formylin Injection is safe if used in the dose and duration advised by your doctor. Take it exactly as directed and do not skip any dose. Follow your doctor's instructions carefully and let your doctor know if any of the side effects bother you.
Yes, any imbalance of vitamin B12 or its deficiency may cause depression. Vitamin B12 along with the other forms of vitamin B are extremely important in regulating chemicals which regulate our mood and behaviour.

Fact Box

Chemical Class

Cobalamin derivative

Habit Forming

No

Therapeutic Class

VITAMINS MINERALS NUTRIENTS

Action Class

Vitamins

References

  1. Masters SB. Agents Used in Anemias; Hematopoetic Growth Factors. In: Katzung BG, Masters SB, Trevor AJ, editors. Basic and Clinical Pharmacology. 11th ed. New Delhi, India: Tata McGraw Hill Education Private Limited; 2009. pp. 574-76.
  2. Kaushansky K, Kipps TJ. Hematopoietic Agents: Growth Factors, Minerals, and Vitamins. In: Brunton LL, Chabner BA, Knollmann BC, editors. Goodman & Gilman’s: The Pharmacological Basis of Therapeutics. 12th ed. New York, New York: McGraw-Hill Medical; 2011. pp. 1088-92.
  3. Briggs GG, Freeman RK, editors. A Reference Guide to Fetal and Neonatal Risk: Drugs in Pregnancy and Lactation. 10th ed. Philadelphia, PA: Wolters Kluwer Health; 2015. pp. 1485-87.
  4. Vitamin B12. Herderstraße 2: Wasserburger Arzneimittelwerk GmbH; 2018. [Accessed on 6 Apr. 2019] (online) Available from:
  5. ScienceDirecct. Vitamin B12. [Accessed 01 Mar. 2019] (online) Available from:
  6. Central Drugs Standard Control Organisation (CDSCO). [Accessed 03 Apr. 2019] (online) Available from:
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Twice A Month
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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: 4Care Lifescience Pvt Ltd
Address: Nr. Parimal Under Bridge, C.G Road, Paldi, Ahmedabad, Gujarat – 380007

Vendor Details

Country of origin: India
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