b fit tablet - Levo-carnitine (500mg) + Methylcobalamin (500mcg) medicine

B Fit Tablet - Uses, Price, Side Effects, and More

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๐Ÿญ Dr. Johns Laboratories Pvt Ltd ๐Ÿ“ฆ Varies by brand ๐Ÿ’Š Allopathy ๐Ÿ“… Updated: Jun 27, 2026
๐Ÿ“‹ Prescription Required ๐Ÿ’Š Generic Available
Medically Reviewed
SaathiMed Expert Panel | Jun 27, 2026

What is b fit tablet used for?

B Fit Tablet is a nutritional supplement containing Levo-carnitine (500mg) and Methylcobalamin (500mcg). It helps improve energy metabolism by converting fat into energy and supports nerve health by aiding myelin repair. It is commonly used for fatigue, neuropathy, and muscle weakness.

  • Generic Name: Levo-carnitine + Methylcobalamin
  • Manufacturer: Dr. Johns Laboratories Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: A
  • Prescription Required: Yes
๐Ÿ’ก Did You Know? Over 80% of the antiretroviral drugs used globally to combat AIDS are supplied by Indian pharmaceutical companies.

๐Ÿ’Š b fit tablet Uses & Benefits

Nutritional supplementation, fatigue, peripheral neuropathy, carnitine deficiency, vitamin B12 deficiency.

Off-label uses: Male infertility, chronic fatigue syndrome, Alzheimer's disease (limited evidence).

๐Ÿ“‹ Drug Information

Generic Name(s)Levo-carnitine + Methylcobalamin
Brand NameB Fit Tablet
ManufacturerDr. Johns Laboratories Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassVITAMINS MINERALS NUTRIENTS
Action ClassVitamins, Minerals, Nutrients
Route of AdministrationOral
StorageStore at room temperature (20-25ยฐC), protect from light and moisture.
Shelf LifeAs per manufacturer

๐Ÿ”ฌ Pharmacology (PK/PD)

Pharmacokinetics

AbsorptionLevo-carnitine is absorbed via active transport in the small intestine; Methylcobalamin is absorbed in the ileum after binding to intrinsic factor.
DistributionLevo-carnitine distributes widely, especially to heart and skeletal muscle; Methylcobalamin distributes to tissues and is stored in the liver.
Protein BindingLevo-carnitine: minimal; Methylcobalamin: highly bound to transcobalamins.
MetabolismLevo-carnitine: not significantly metabolized; Methylcobalamin: converted to other cobalamins in the liver.
Half-LifeLevo-carnitine: 3-4 hours; Methylcobalamin: approximately 6 days (plasma).
ExcretionLevo-carnitine: renal (as unchanged drug); Methylcobalamin: biliary and renal.
BioavailabilityLevo-carnitine: 5-15% (oral); Methylcobalamin: variable, dependent on intrinsic factor.
Onset of ActionLevo-carnitine: within hours; Methylcobalamin: days to weeks.
Peak Plasma TimeLevo-carnitine: 3-6 hours; Methylcobalamin: 8-12 hours.
Duration of ActionLevo-carnitine: 6-8 hours; Methylcobalamin: days.

How It Works

Levo-carnitine facilitates fatty acid transport into mitochondria for energy production; Methylcobalamin is a cofactor for methionine synthase and methylmalonyl-CoA mutase, involved in homocysteine metabolism and myelin synthesis.

Mechanism Steps

1Levo-carnitine is transported into cells via OCTN2.
2Levo-carnitine binds to fatty acids to form acylcarnitines.
3Acylcarnitines are shuttled into mitochondria for beta-oxidation.

๐Ÿ’ก How to Take b fit tablet

Follow your doctor's prescription exactly.

Dosage Timeline

๐ŸŒ… Morning โœ… โ˜€๏ธ Afternoon โŒ ๐ŸŒ† Evening โœ… ๐ŸŒ™ Night โŒ

โš ๏ธ Side Effects of b fit tablet

โœ… Common Side Effects

  • Nausea
  • Vomiting
  • Diarrhea
  • Fishy body odor (levo-carnitine)

๐Ÿšจ Serious Side Effects

  • Seizures (rare)
  • Allergic reactions

โš ๏ธ Rare Side Effects

  • Hypotension
  • Tachycardia

Consult your doctor if you experience any unusual symptoms.

๐Ÿ”ฌ Drug Interactions

โš ๏ธ DrugSeverityEffect
Warfarin Moderate May decrease anticoagulant effect
Levodopa Moderate Decreased effectiveness of levodopa

๐Ÿšจ Major Interactions

  • Warfarin
  • Valproic acid

โšก Moderate Interactions

  • Anticonvulsants
  • Oral contraceptives

โ„น๏ธ Minor Interactions

  • Vitamin C
  • Folic acid

๐Ÿฝ๏ธ Food Interactions

High-fat meals may reduce absorption of levo-carnitine.

๐Ÿท Alcohol Interaction

Alcohol may reduce absorption of methylcobalamin.

๐Ÿ›ก๏ธ Safety & Warnings

Liver
Low
Kidney
Low
Heart
Low
Pregnancy
Category A

๐Ÿšซ Contraindications

Hypersensitivity to any component, trimethylaminuria (for levo-carnitine).

๐Ÿ“Š Monitoring Parameters

Serum carnitine and vitamin B12 levels, homocysteine levels, clinical improvement.

๐Ÿคฑ Lactation Safety

Safe, both components are present in breast milk and are essential.

๐Ÿ’Š Overdose Management

Supportive care; levo-carnitine overdose may cause diarrhea; methylcobalamin is water-soluble and excreted.

โฐ Missed Dose

Take as soon as remembered unless near next dose; skip missed dose if close to next.

๐Ÿ‘จโ€โš•๏ธ Reviewed by Expert

SaathiMed Expert Panel

MD, PhD - Pharmacology

Reviewed: Jun 27, 2026

๐Ÿ”— View Profile

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