This medicine works by providing essential b-complex vitamins (thiamine, riboflavin, pyridoxine, niacinamide, cyanocobalamin) and calcium pantothenate, which play a vital role in converting food into energy, supporting nerve function, forming red blood cells, maintaining healthy skin, and keeping bones strong. Together they help improve overall metabolism, strengthen the immune system, and correct nutritional deficiencies. It is commonly used to treat or prevent vitamin B, manage symptoms like fatigue, numbness, and muscle weakness, and support recovery in cases of poor diet, chronic illness, or nerve-related conditions.  

Side effects are usually mild but may include nausea, stomach upset, headache, flushing, tingling, or yellow-colored urine. Rarely, allergic reactions like rash or itching may occur. 

This medicine comes under multivitamin / B-complex supplement category, and it is used to treat and relieve symptoms of the following indications: 

1. Vitamin B complex deficiencies 
2. Symptoms like tingling, numbness, or burning in hands and feet 
3. Boost energy levels 
4. Support red blood cell production 
5. Strengthen the immune system  

1. If you forget to take B complex, take it as soon as you remember. If it’s almost time for your next dose, skip the missed dose. 
2. Take B complex exactly as prescribed by your doctor, at the same time each day.  
3. Do not stop taking B complex without your doctor’s approval, even if you feel better.

More Common  

1. Nausea, vomiting, or upset stomach
2. Mild diarrhea
3. Headache
4. Fatigue or drowsiness
5. Skin rash or itching (sometimes from niacin or B6)
6. Bright yellow urinetract infection 
7. Rash 

Less Common

1. Flushing, warmth, or tingling (especially from Niacin/B3)
2. Increased urination
3. Restlessness or insomnia
4. Sensitivity to sunlight

Thiamine (Vitamin B1) helps turn food into energy by supporting the breakdown of carbohydrates, fats, and proteins, while maintaining proper nerve signal transmission, enabling muscles to contract and relax effectively, and keeping the heart healthy. Riboflavin (Vitamin B2) supports energy production and helps maintain healthy skin, eyes, and nerve function. Pyridoxine (Vitamin B6) plays a vital role in brain function, red blood cell production, and regulating mood and sleep by helping produce serotonin and other brain chemicals. Niacinamide (Vitamin B3) improves blood circulation, supports brain and skin health, and aids in converting food into energy. Cyanocobalamin (Vitamin B12) is essential for red blood cell formation, nerve health, and preventing fatigue and weakness. Calcium builds and maintains strong bones and teeth, assists muscle function, and supports nerve communication.

Avoid taking B complex with the following medicines, as it may increase or decrease the desired effect, or in worse cases, it could be fatal: 

Avoid taking this medicine with tea, coffee, alcohol, high-fiber foods, or oxalate-rich foods like spinach, beetroot, chocolate as they may reduce the absorption of b-vitamins and calcium. Take the supplement with water and a balanced meal for the best results. 

1. Keep out of reach of children 
2. Store the medicine at room temperature 
3. Keep away from sunlight and moisture 

Daily dose

Take B complex exactly as your doctor recommends. The dose may change based on your condition and how well you respond. Do not take more than prescribed without consulting your doctor. 

Missed Dose

If you forget to take your medicine, take the medication soon as you remember. If it’s nearly time for your next dose, skip the missed one and continue with your regular schedule. Always consult the doctor before making any changes to your dosage.

Thiamine

The recommended dosage is 50 – 100 mg per day. Overdosing may cause headache or irritability. 

Riboflavin

The maximum daily intake is 1.3 mg for men and 1.1 mg for women. Symptoms of overdose include excess may cause bright yellow urine, nausea, and vomiting.

Pyridoxine

The Recommended Dietary Allowance (RDA) for Vitamin B6 is 1.3 mg/day. overdose may cause nerve damage, numbness, or tingling. 

Niacinamide

The RDA for niacinamide is 500 mg/day. Overdose may cause flushing, liver issues, or stomach upset. 

Cyanocobalamin

The RDA for both men and women is 25 to 2000 mcg orally daily. Overdose symptoms may cause acne and rash. 

Calcium

The RDA of calcium is about 500–600 mg/day for children and 1,000–1,200 mg/day for adults depending on age. For pregnant and lactating women, the requirement is around 1,000–1,200 mg/day to support both mother and baby. Overdose (hypercalcemia) can cause nausea, vomiting, constipation, abdominal pain

The following are the natural sources of B complex listed in this medicine: 

Thiamine

Foods rich in thiamine include whole wheat roti, peanuts, sunflower seeds, rajma (kidney beans) 

Riboflavin (B2)

Foods rich in riboflavin include eggs, milk, curd, spinach, almonds (badam) 

Pyridoxine (B6)

Foods rich in pyridoxine include bananas, potatoes, chicken, fish, chana (chickpeas) 

Niacinamide (B3)

Foods rich in niacinamide include chicken, fish, groundnuts (peanuts), mushrooms, eggs 

Cyanocobalamin (B12)

Foods rich in cyanocobalamin include milk, paneer, curd, eggs, chicken, fish (mainly in non-veg foods) 

Calcium

Foods rich in calcium include milk, curd, paneer, cheese, tofu, palak (spinach), broccoli 

What are some common foods rich in Thiamine? 

Whole wheat, brown rice, peanuts, sunflower seeds, rajma, moong dal, pork, soybeans, fortified cereals are some common foods which have high thiamine levels. 

What are the symptoms of thiamine (Vitamin B1) deficiency? 

Common symptoms of thiamine deficiency include tiredness, irritability, poor memory, muscle weakness, loss of appetite, nerve pain, and in severe cases, heart problems. 

How does thiamine work in the body?

It helps turn food into energy by supporting the breakdown of carbohydrates, fats, and proteins, maintains proper nerve signal transmission for healthy nerve function, and enables muscles to contract and relax effectively, while also keeping the heart healthy. 

What are some common foods rich in Cyanocobalamin (Vitamin B12)? 

Milk, curd, paneer, cheese, eggs, chicken, fish, meat, and fortified cereals or soy milk (for vegetarians) are some common foods which have high cyanocobalamin levels. 

What foods are rich in calcium?

Milk, curd, paneer, cheese, tofu, ragi, almonds, spinach, broccoli, and fortified juices or cereals are some common foods which have high calcium levels. 

What are some common food sources of Riboflavin (Vitamin B2)? 

Milk, curd, eggs, green leafy vegetables (like spinach), almonds, mushrooms, and whole grains are some foods which have high riboflavin levels. 

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4. Pyridoxine Dosage Guide + Max Dose, Adjustments [Internet]. Drugs.com. Available from 
5. https://www.facebook.com/Drugscom. Niacinamide Dosage Guide + Max Dose, Adjustments [Internet]. Drugs.com. 2024. Available from 
6. Cyanocobalamin Dosage Guide + Max Dose, Adjustments [Internet]. Drugs.com. Available from 
7. National Institutes of Health. Office of Dietary Supplements – Vitamin B12 [Internet]. Nih.gov. National Institutes of Health; 2024. Available from