PMSR Forte Injection
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About PMSR Forte Injection
PMSR Forte Injection is an injectable medicine used to treat vitamin B12 deficiency, peripheral neuropathy, and certain types of anaemia. It provides an active form of vitamin B12 directly to the body, helping to restore healthy nerve function and red blood cell production.
Because this medicine is given as an injection, its frequency depends entirely on your medical condition and your doctor's recommendation. It is typically administered weekly or monthly, with some patients receiving it daily at the start of treatment. Since it is injected, it does not rely on your digestive system to be absorbed, making it highly effective regardless of your diet, though eating foods rich in vitamin B12 can help support your long-term recovery.
While this medicine is generally well-tolerated, some people may experience mild side effects like pain or redness at the injection site, mild diarrhoea, or a temporary skin rash. You should contact your doctor immediately if you experience severe symptoms, such as difficulty breathing, sudden swelling, or severe muscle weakness.
Talk to your doctor before starting this medicine if you have underlying health conditions, especially kidney disease, liver disease, or low potassium levels. Do not take this if you are allergic to cobalt or B12, or if you have a hereditary eye condition called Leber's disease.
Certain substances can interfere with your treatment. Smoking and heavy alcohol use can reduce the effectiveness of this medicine, while medications like colchicine or specific antibiotics may alter how your body responds to it. If you are pregnant, breastfeeding, or are caring for an elderly patient, consult your healthcare provider to discuss a safe treatment plan.
Uses of PMSR Forte Injection
Your doctor may prescribe PMSR Forte Injection to treat the following conditions:
- Vitamin B12 deficiency: It restores healthy vitamin levels in people who cannot absorb enough of this nutrient through their diet or due to medical conditions.
- Peripheral neuropathy: It helps repair damaged nerve fibres and relieves symptoms like numbness, tingling, and burning pain in the limbs.
- Megaloblastic anaemia: It assists in the proper production of healthy red blood cells, reversing severe fatigue and weakness caused by anaemia.
Key Benefits
PMSR Forte Injection helps correct vitamin deficiencies that affect the nerves, blood cells, and overall metabolism. By restoring essential nutrients, it supports healthy nerve function, red blood cell production, and energy levels, improving overall well-being. Key benefits include:
- Supports Nerve Health: Helps nourish and protect nerves, supporting normal nerve function and reducing deficiency-related nerve damage.
- Relieves Nerve-Related Symptoms: May help reduce tingling, numbness, burning sensations, and discomfort associated with vitamin deficiency or peripheral neuropathy.
- Supports Healthy Red Blood Cell Production: Helps correct deficiencies involved in red blood cell formation, improving oxygen transport throughout the body.
- Boosts Energy Levels: Restores essential nutrients needed for normal energy metabolism, helping reduce fatigue and weakness caused by vitamin deficiencies.
- Supports Brain and Nervous System Function: Helps maintain healthy brain function, cognitive performance, and normal nervous system activity by replenishing essential vitamins.
- Inform your doctor about the nausea and discuss possible alternatives to the medication or adjustments to the dosage.
- Divide your daily food intake into smaller, more frequent meals to reduce nausea.
- Opt for bland, easily digestible foods like crackers, toast, plain rice, bananas, and applesauce.
- Avoid certain foods that can trigger nausea, such as fatty, greasy, spicy, and smelly foods.
- Drink plenty of fluids, such as water, clear broth, or electrolyte-rich beverages like coconut water or sports drinks.
- Use ginger (tea, ale, or candies) to help relieve nausea.
- Get adequate rest and also avoid strenuous activities that can worsen nausea.
- Talk to your doctor about taking anti-nausea medication if your nausea is severe.
- Record when your nausea occurs, what triggers it, and what provides relief to help you identify patterns and manage your symptoms more effectively.
Directions for Use
- Follow your doctor's instructions on the dosage and timing of this medication to ensure safe and effective use.
- PMSR Forte Injection will be administered by the doctor or healthcare professional.
- Do not self-administer.
How PMSR Forte Injection Works
Alcohol
Caution
It is advisable to avoid or limit alcohol while on methylcobalamin injections. Always discuss your alcohol use with your doctor, especially if you are being treated for a deficiency related to poor nutrition or liver function.
Pregnancy
Caution
Inform your doctor if you are pregnant or planning to become pregnant. Your doctor will carefully weigh the benefits against the potential risks before prescribing PMSR Forte Injection.
Breast Feeding
Caution
Inform your doctor if you are breastfeeding. Your doctor will determine whether it is safe for you to use PMSR Forte Injection while nursing.
Driving
Caution
PMSR Forte Injection may cause dizziness. Do not drive or operate machinery if you experience dizziness.
Liver
Caution
Inform your doctor if you have liver impairment. Your doctor will assess the potential benefits and risks before prescribing PMSR Forte Injection.
Kidney
Caution
Inform your doctor if you have kidney impairment. Your doctor will assess the potential benefits and risks before prescribing PMSR Forte Injection.
Children
Safe if prescribed
PMSR Forte Injection should be used in children only if prescribed by a doctor. The doctor will carefully evaluate the benefits and potential risks before recommending its use.
Heart
Consult your doctor
If you have any concerns regarding the use of PMSR Forte Injection in patients with heart problems, please consult a doctor.
Geriatrics
Consult your doctor
Please consult a doctor if you have any concerns regarding the use of PMSR Forte Injection in elderly patients.
What if I have taken an overdose of PMSR Forte Injection
Diet & Lifestyle Advise
- Eat vitamin B12-rich foods: Include foods such as fish, meat, poultry, eggs, and dairy products in your diet to help maintain healthy vitamin B12 levels, unless you follow a vegetarian or vegan diet.
- Choose fortified foods if you follow a plant-based diet: Consume vitamin B12-fortified foods, such as plant-based milks, breakfast cereals, and nutritional yeast, to help meet your daily vitamin B12 requirements.
- Limit alcohol consumption: Excessive alcohol intake can interfere with the absorption and utilisation of vitamin B12 and may contribute to nerve damage, so it is best to reduce or avoid alcohol.
- Avoid smoking and tobacco: Quitting smoking supports healthy circulation, improves nutrient utilisation, and may help slow the progression of nerve-related symptoms.
- Protect your feet and hands: If you have nerve damage, inspect your hands and feet daily for cuts, blisters, or sores, wear well-fitting supportive footwear, and avoid exposure to extreme temperatures to reduce the risk of injury.

Have a query?
How Soon It Starts Working
The time required for PMSR Forte Injection to start to work: The onset time of PMSR Forte Injection has not been clinically established. The time for which the effects of PMSR Forte Injection last: The duration of PMSR Forte Injection’s effect is clinically not established.
What if you forget to take PMSR Forte Injection
Storage
Drug Warnings
- Inspect the injection before use: Before administration, ensure the solution is clear, red, and free from visible particles. Do not use the injection if it appears cloudy, discoloured, or contains sediment.
- Rotate injection sites: Use a different injection site with each dose, such as the thigh, upper arm, or buttock (as appropriate), to help reduce soreness, skin irritation, or the formation of hard lumps.
- Use a new needle and syringe every time: Never reuse or share needles or syringes, as this can increase the risk of serious infections and needle-related complications.
- Inform your doctor about eye conditions: Tell your healthcare provider if you have Leber's hereditary optic neuropathy or any history of inherited optic nerve disease before starting treatment.
- Attend regular follow-up tests: Keep all scheduled laboratory appointments so your doctor can monitor your blood counts, vitamin B12 response, and potassium levels when clinically indicated during treatment.
Drug-Drug Interactions
Drug-Drug Interaction Summary:
- Colchicine: This medicine used for gout may lower the effectiveness of your treatment.
- Chloramphenicol: This antibiotic can decrease your body’s response to the injection when treating anaemia.
- Aminosalicylic acid: This medication used for digestive issues can reduce how well your body processes this vitamin.
Drug-Drug Interactions
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Drug-Food Interactions
Drug-Food Interaction Summary:
- Alcohol: Heavy drinking can lower active vitamin levels in your blood and hinder your recovery.
Drug-Food Interactions
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Reference
- MIMS Drug Reference Compendium. Mecobalamin Monograph. Singapore: MIMS; 2025. [Accessed on 02 Jun. 2026]Check here
- Drugs.com Clinical Review Team. Methylcobalamin Drug Interactions Reference. Auckland, NZ: Drugs.com; 2026. [Accessed on 02 Jun. 2026]Check here
- ScienceDirect ScienceDirect. [Accessed on 05 Apr. 2019]Check here
- Andrès E, Vogel T, Federici L, et al. Cobalamin deficiency in elderly patients: a personal view. Curr Gerontol Geriatr Res. 2008;2008:848267Check here
- Sezer RG, Bozaykut A, Akoğlu HA, et al. 2018. [Accessed on 20 Feb. 2024]Check here
- Office of Dietary Supplements - Vitamin B12 [Internet]. Ods.od.nih.gov. 2025 [Accessed on 22 Jul 2025]Check here
- DrugBank. Mecobalamin [Internet]. go.drugbank.com; [Accessed on 2025 Oct 28]Check here




