Astra-N Tablet

Vitamin B1 (Thiamine) forms thiamine pyrophosphate by combining with adenosine triphosphate; essential coenzyme in carbohydrate metabolism.    

Vitamin B6 (Pyridoxine) is a water-soluble vitamin which functions in the metabolism of carbohydrates, proteins and fats. It is essential in Hb formation and GABA synthesis within the CNS. It also aids in the release of glycogen stored in the liver and muscles.    

Vitamin B12 (cobalamin) is a water-soluble vitamin that has a key role in the normal functioning of the brain and nervous system, and the formation of red blood cells. It is one of eight B vitamins. It is involved in the metabolism of every cell of the human body, especially affecting DNA synthesis, fatty acid and amino acid metabolism.    

Vitamin B1 (Thiamine), B6 (Pyridoxine) & B12 (Cyanocobalamin) play essential role as co-enzyme for the metabolism of nervous system. Thus this combination normalizes the nerve cell metabolism. This combination supports the regeneration of nerve fibers and myelin sheath by activation of the metabolism and the natural repair mechanism. The combination of these 3 vitamins shows better efficacy than that of the individual components. In addition, Vitamin B1, B6 & B12 promote body's own repair mechanism and work in pain management


Each tablet contains-

  • Thiamine Nitrate (Vitamin B1) 100 mg
  • Pyridoxine Nitrate (Vitamin B6) 200 mg
  • Cyanocobalamin (Vitamin B12) 200 mcg.

Each 3 ml ampoule contains-

  • Thiamine Hydrochloride (Vitamin B1) 100 mg
  • Pyridoxine Hydrochloride (Vitamin B6) 100 mg
  • Cyanocobalamin (Vitamin B12) 1000 mcg.

Vitamin B1, B6 & B12 is used for the treatment of B1, B6 and B12 deficiency syndrome. It is also used for the treatment of:

  • Diabetic neuropathy
  • Sciatica
  • Peripheral neuralgia
  • Facial neuralgia
  • Lumbago
  • Intercostal neuralgia
  • Myalgia
  • Spinal pain


Trade Name Astra-N
Generic Vitamin B1, B6 + B12
Weight 100mg+200mg+200mcg
Type Tablet
Therapeutic Class Specific combined vitamin preparations
Manufacturer Astra Biopharmaceuticals Ltd
Available Country Bangladesh
Last Updated: June 23, 2021 at 11:26 am


Vitamin B1, B6 + B12 Structure


Astra-N dosage

Tablets may be administered in a dose of 1 to 3 tablets per day or as directed by the physician. 

Ampoules are preferably injected intramuscularly (deep intragluteal). In severe cases 1 ampoule daily until the acute symptoms subside. For milder cases and follow up therapy 2 to 3 ampoules per week. 

Side Effects

Generally well tolerated. However, a few allergic reactions may be seen.


Cyanocobalamin should not be given before a diagnosis has been fully established because of the possibility of masking symptoms of subacute degeneration of the spinal cord. Cyanocobalamin is not a suitable form of Vitamin B12 for the treatment of optic neuropathies associated with raised plasma concentrations of cyanocobalamin.


No such drug interactions have been reported.

Pregnancy & Breastfeeding use

Oral tablet form is recommended but injectable preparation is not recommended due to presence of benzyl alcohol.


Should not be used in the patients on Levodopa therapy and hypersensitivity to any of the active ingredients.

Acute Overdose

If there is known overdose then treatment is symptomatic and supportive.