
Key Highlights
- Vitamin B3 (Niacin) is essential for energy production, cholesterol regulation, and brain health.
- Niacin-rich foods include poultry, tuna, liver, potatoes, green peas, and whole grains.
- Niacin helps maintain healthy skin, improve hydration, and reduce inflammation.
Niacin, also known as vitamin B3, is one of the eight essential B vitamins your body requires for various biological processes. Unlike some vitamins, your body cannot produce niacin on its own. That means you need to get it through diet or supplementation. But did you know that various foods, including fruits, vegetables, and animal-based products, are rich in niacin? If not, keep reading to know about them and their detailed nutritional content and health benefits. But before that, let's highlight the health benefits of vitamin B3.
Health Benefits of Vitamin B3
Vitamin B3 consumption is linked to the following health perks.
- Vitamin B3 converts food into energy by aiding in the enzyme function involved in cellular processes. This ensures your cells get the fuel they need for optimal performance.
- Niacin lowers bad cholesterol (LDL) and triglycerides while increasing good cholesterol (HDL). This contributes to better cardiovascular health by reducing the risk of heart disease.
- B3 helps maintain healthy skin by improving its elasticity, texture, and hydration. It also reduces inflammation and prevents acne and other skin disorders.
- Vitamin B3 supports the brain by improving circulation and boosting the synthesis of neurotransmitters, which can aid cognitive function.
- Niacin helps maintain healthy blood sugar levels by influencing insulin sensitivity and glucose metabolism.
Also Read: Methi (Fenugreek): Health Benefits, Nutrition, Uses & Side Effects
Top Sources of Vitamin B3 (Niacin)
You can get an adequate amount of vitamin B3 from the following sources.Animal Liver
Animal liver is rich in vitamin A (retinol), which supports vision, immune function, and cellular differentiation. Additionally, the liver is a potent source of B vitamins, particularly B12 (cobalamin), crucial for red blood cell formation, DNA synthesis, and neurological health.
Nutritional content of animal liver:
| Nutrient | Amount Per 100 g |
| Vitamin B3 (Niacin) | 13.2 mg |
| Vitamin A | 6,582 IU |
| Vitamin B12 | 70.7 µg |
| Protein | 26.4 g |
| Fat | 4.8 g |
| Carbohydrates | 3.9 g |
| Iron | 6.2 mg |
| Zinc | 4.0 mg |
| Phosphorus | 396 mg |
| Copper | 12.5 mg |
| Sodium | 69 mg |
| Cholesterol | 396 mg |
Chicken Breast
Chicken breast helps muscle protein synthesis and maintains skeletal muscle mass. Its high biological value, rich in essential amino acids, promotes the repair of cellular structures and supports enzymatic function.
Nutritional content of chicken breast:
| Nutrient | Amount Per 100 g |
| Vitamin B3 | 13.7 mg |
| Calories | 165 kcal |
| Protein | 31 g |
| Total Fat | 3.6 g |
| Saturated Fat | 1 g |
| Cholesterol | 85 mg |
| Carbohydrates | 0 g |
| Fibre | 0 g |
| Sugars | 0 g |
| Sodium | 74 mg |
| Potassium | 256 mg |
| Vitamin B6 | 0.6 mg |
| Phosphorus | 210 mg |
| Selenium | 27.6 mcg |
| Iron | 0.9 mg |
Tuna
Tuna is a lean, protein-rich form. It contains high quantities of omega-3 polyunsaturated fatty acids, primarily eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), that support inflammatory pathways, improve endothelial function, and reduce cardiovascular risk by lowering triglyceride levels, improving HDL cholesterol, and reducing arterial plaque formation. Additionally, tuna supports calcium homeostasis and bone mineralisation.
Nutritional content of tuna:
| Nutrient | Amount Per 100 g |
| Vitamin B3 | 11.5 mg |
| Protein | 23.5 g |
| Fat | 1.0 g |
| Carbohydrates | 0 g |
| Calories | 132 kcal |
| Omega-3 Fatty Acids | 1.0 g |
| Sodium | 50 mg |
| Cholesterol | 40 mg |
| Vitamin B12 | 2.2 µg |
| Vitamin D | 3.5 µg |
| Iron | 1.0 mg |
| Magnesium | 30 mg |
| Potassium | 400 mg |
Potatoes
Potatoes are rich in complex carbohydrates, which help maintain cellular function and metabolic activity. Although their glycemic index can vary, their fibre content, particularly in the skin, promotes gut motility and contributes to a balanced microbiome, enhancing digestive health.
Nutritional content of potatoes:
| Nutrient | Amount Per 100 g |
| Vitamin B3 | 1.05 mg |
| Vitamin B1 | 0.08 mg |
| Vitamin B2 | 0.03 mg |
| Vitamin B5 | 0.30 mg |
| Vitamin B6 | 0.30 mg |
| Vitamin B9 | 15 µg |
| Vitamin C | 19.7 mg |
| Vitamin K | 2.0 µg |
| Calcium | 12 mg |
| Iron | 0.81 mg |
| Magnesium | 23 mg |
| Phosphorus | 57 mg |
| Potassium | 429 mg |
| Sodium | 6 mg |
| Zinc | 0.30 mg |
| Protein | 2.0 g |
| Carbohydrates | 17.5 g |
| Dietary Fibre | 2.2 g |
| Sugars | 0.8 g |
| Fat | 0.1 g |
| Energy | 77 kcal |
Green Peas
Green peas provide essential amino acids supporting cellular growth, tissue repair, and enzymatic functions. Their flavonoids reduce oxidative stress and lower the risk of chronic diseases like cardiovascular pathology and neurodegeneration. Green peas also have anti-inflammatory properties due to omega-3 fatty acids.
Nutritional content of green peas:
| Nutrient | Amount Per 100 g |
| Vitamin B3 | 2.1 mg |
| Vitamin A | 765 IU |
| Vitamin B1 | 0.3 mg |
| Vitamin B2 | 0.1 mg |
| Vitamin B5 | 0.1 mg |
| Vitamin B6 | 0.2 mg |
| Vitamin B9 | 65 mcg |
| Vitamin C | 40 mg |
| Vitamin E | 0.1 mg |
| Vitamin K | 24.8 mcg |
| Calcium | 25 mg |
| Iron | 1.5 mg |
| Magnesium | 33 mg |
| Phosphorus | 108 mg |
| Potassium | 244 mg |
| Sodium | 5 mg |
| Zinc | 1.2 mg |
| Protein | 5.4 g |
| Carbohydrates | 14.5 g |
| Dietary Fibre | 5.1 g |
| Sugars | 5.7 g |
| Fats | 0.4 g |
| Calories | 81 kcal |
Broccoli
Broccoli is a cruciferous vegetable. It is a rich source of glucosinolate that, upon enzymatic hydrolysis, produces isothiocyanate, particularly sulforaphane, known for its antioxidant and anti-inflammatory properties. These compounds modulate the Nrf2 pathway, activating cellular defence against oxidative stress and promoting the detoxification of carcinogenic agents.
Nutritional content of broccoli:
| Nutrient | Amount Per 100 g |
| Vitamin B3 | 0.639 mg |
| Vitamin B5 | 0.573 mg |
| Vitamin B6 | 0.175 mg |
| Vitamin B9 | 63 µg |
| Vitamin C | 89.2 mg |
| Vitamin K | 101.6 µg |
| Vitamin A | 31 µg |
| Calcium | 47 mg |
| Iron | 0.73 mg |
| Magnesium | 21 mg |
| Phosphorus | 66 mg |
| Potassium | 316 mg |
| Sodium | 33 mg |
| Zinc | 0.41 mg |
| Protein | 2.82 g |
| Carbohydrates | 6.64 g |
| Fibre | 2.6 g |
| Sugars | 1.7 g |
| Fat | 0.37 g |
| Water | 89.3 g |
Mushrooms
Mushrooms contain substances like beta-glucans. It helps activate key immune cells, including macrophages, dendritic cells, and natural killer (NK) cells, boosting your immune system.
Reishi mushrooms also contain triterpenoids. They calm inflammation by reducing harmful molecules called pro-inflammatory cytokines.
Nutritional content of mushrooms:
| Nutrient | Amount Per 100 g |
| Vitamin B3 | 3.6 mg |
| Vitamin B2 | 0.4 mg |
| Vitamin B5 | 1.5 mg |
| Vitamin B1 | 0.1 mg |
| Vitamin B6 | 0.1 mg |
| Folate | 17 µg |
| Vitamin D | 7 IU |
| Protein | 3.1 g |
| Carbohydrates | 3.3 g |
| Dietary Fibre | 1.0 g |
| Sugars | 1.0 g |
| Fat | 0.3 g |
| Calories | 22 kcal |
| Water | 92 g |
| Calcium | 3 mg |
| Iron | 0.5 mg |
| Magnesium | 9 mg |
| Phosphorus | 86 mg |
| Potassium | 318 mg |
| Sodium | 5 mg |
| Zinc | 0.5 mg |
| Copper | 0.3 mg |
| Selenium | 9 µg |
Whole Wheat
Whole wheat is a nutrient-dense dietary staple. Its rich dietary fibre promotes optimal gastrointestinal health. They lower the risks of constipation and colorectal disorders. The insoluble fibre component improves faecal bulk, while soluble fibres support glycemic responses by decelerating carbohydrate absorption.
Nutritional content of whole wheat:
| Nutrient | Amount Per 100 g |
| Vitamin B3 | 6.4 mg |
| Vitamin B1 | 0.5 mg |
| Vitamin B2 | 0.2 mg |
| Vitamin B6 | 0.3 mg |
| Folate | 43 µg |
| Vitamin E | 1.0 mg |
| Vitamin K | 1.9 µg |
| Calories | 340 kcal |
| Carbohydrates | 72 g |
| Protein | 13.2 g |
| Total Fat | 2.5 g |
| Dietary Fibre | 10.7 g |
| Calcium | 34 mg |
| Iron | 3.6 mg |
| Magnesium | 138 mg |
| Phosphorus | 357 mg |
| Potassium | 405 mg |
| Zinc | 2.9 mg |
| Sodium | 2.0 g |
Cherry Tomatoes
Cherry tomatoes are rich in lycopene. They help protect the body from harmful reactive oxygen species (ROS) molecules. This protective effect lowers the risk of lipid peroxidation and prevents endothelial dysfunction — both factors that contribute to heart disease and atherosclerosis. Moreover, lycopene has been found to play a role in cancer prevention.
Nutritional content of cherry tomatoes:
| Nutrient | Amount Per 100 g |
| Vitamin B3 | 0.594 mg |
| Vitamin B5 | 0.089 mg |
| Vitamin B6 | 0.080 mg |
| Vitamin B9 | 15 µg |
| Vitamin C | 18.4 mg |
| Vitamin K | 7.9 µg |
| Vitamin A | 42 µg |
| Carbohydrates | 3.92 g |
| Sugars | 2.63 g |
| Dietary Fibre | 1.2 g |
| Protein | 0.88 g |
| Fats | 0.20 g |
| Calcium | 10 mg |
| Iron | 0.27 mg |
| Magnesium | 11 mg |
| Phosphorus | 24 mg |
| Potassium | 237 mg |
| Sodium | 5 mg |
| Water | 94.78 g |
| Calories | 18 kcal |
Peanuts
Peanuts are a nutritionally dense leguminous crop. Their arginine (protein) content contributes to nitric oxide synthesis and improves endothelial function and vasodilation. Peanuts' dietary fibre improves glycemic response and supports gastrointestinal function.
Nutritional content of peanuts:
| Nutrient | Amount Per 100 g |
| Vitamin B3 | 12.07 mg |
| Vitamin B1 | 0.64 mg |
| Vitamin B2 | 0.14 mg |
| Vitamin B5 | 1.77 mg |
| Vitamin B6 | 0.35 mg |
| Folate | 240 µg |
| Vitamin E | 8.33 mg |
| Vitamin K | 0.1 µg |
| Calcium | 92 mg |
| Magnesium | 168 mg |
| Phosphorus | 376 mg |
| Potassium | 705 mg |
| Iron | 4.58 mg |
| Zinc | 3.27 mg |
| Copper | 1.14 mg |
| Manganese | 1.93 mg |
| Selenium | 7.2 µg |
| Protein | 25.8 g |
| Carbohydrates | 16.1 g |
| Sugars | 4.7 g |
| Dietary Fibre | 8.5 g |
| Total Fat | 49.2 g |
| Saturated Fat | 6.83 g |
| Monounsaturated Fat | 24.43 g |
| Polyunsaturated Fat | 15.56 g |
| Water | 6.5 g |
| Energy | 567 kcal |
Daily Requirement of Vitamin B3
The daily requirement of vitamin B3 (Niacin) varies depending on age, sex, and life stage. The recommended dietary allowance (RDA) for niacin is as follows:
| Age Group | Recommended Daily Intake (RDI) |
| Infants | |
| 0-6 months | 2 mg |
| 7-12 months | 4 mg |
| Children | |
| 1-3 years | 6 mg |
| 4-8 years | 8 mg |
| 9-13 years | 12 mg |
| Adolescents | |
| 14-18 years (Boys) | 16 mg |
| 14-18 years (Girls) | 14 mg |
| Adults | |
| 19 years and older | 16 mg (Men), 14 mg (Women) |
| Pregnant Women | 18 mg |
| Breastfeeding Women | 17 mg |
Niacin-rich Foods for Health
Including vitamin B3 (Niacin) in your diet is crucial for maintaining overall health, from boosting energy to promoting cardiovascular wellness. You can easily meet your daily requirements by incorporating niacin-rich foods like poultry, fish, whole grains, and vegetables. Remember, a balanced diet is key to reaping the full benefits of niacin while also improving your skin, brain function, and digestive health. Make these nutrient-dense foods a part of your meals for better well-being and vitality.You must also invest in health insurance to ensure you are financially prepared for any medical emergency that may strike, regardless of how healthy a diet you maintain. Also Read: Lauki (Bottle Gourd): Health Benefits, Nutrition, Uses & Side Effects
FAQS - FREQUENTLY ASKED QUESTIONS
What are the best food sources of vitamin B3 (Niacin)?
The best food sources of vitamin B3 (Niacin) include poultry (such as chicken and turkey), fish (especially tuna, salmon, and sardines), whole grains, fortified cereals, and legumes. Plant-based sources include nuts, seeds, and mushrooms.
What is the optimal daily intake of vitamin B3?
The daily intake of vitamin B3 varies by age and gender. Adults need 14-16 mg daily, while children and infants require less. Pregnant and breastfeeding women require a bit higher amounts, around 17-18 mg daily.
Can too much vitamin B3 be harmful?
Yes, excessive vitamin B3 intake can cause side effects, such as skin rashes, liver damage, gastrointestinal issues, and blurred vision.
Can vitamin B3 improve acne?
Vitamin B3, specifically niacinamide (a topical form), has been shown to help reduce acne by controlling oil production, reducing inflammation, and preventing pores from clogging. It is a common ingredient in many acne treatments and skincare products.
How does vitamin B3 interact with other nutrients?
Vitamin B3 works synergistically with other B vitamins, such as B6 and B12, to produce energy. It also helps the body more efficiently utilise proteins, fats, and carbohydrates.
Is vitamin B3 beneficial for hair growth?
Yes, vitamin B3 (niacin) can help promote hair growth by improving circulation to the scalp. Better blood flow to hair follicles supports nutrient delivery. It is crucial for hair strength and growth and prevents hair loss.
What is the connection between vitamin B3 (Niacin) and the nervous system?
Vitamin B3 (Niacin) is essential for the proper functioning of the nervous system. Niacin helps produce coenzymes NAD (nicotinamide adenine dinucleotide) and NADP (nicotinamide adenine dinucleotide phosphate), which support the metabolism of neurotransmitters like serotonin and dopamine, vital for mood regulation, cognition, and overall brain function.
How do animal-based vitamin B3 (Niacin) sources compare to plant-based sources?
Animal-based sources of vitamin B3 (Niacin), such as meat, poultry, and fish, typically provide higher amounts of niacin in a more bioavailable form than plant-based sources. In animal foods, niacin is found in its active form, making it easier for the body to absorb.
What is the connection between vitamin B3 (Niacin) and skin pigmentation?
Vitamin B3 (Niacin) may indirectly influence skin pigmentation by influencing the production and function of melanin, the pigment responsible for skin colour.
Can vitamin B3 (Niacin) help with energy levels?
Yes, vitamin B3 (Niacin) is essential for energy production in the body. Niacin is a key component of NAD and NADP, coenzymes that participate in cellular respiration to convert carbohydrates, fats, and proteins into energy.
The information contained herein is generic in nature and is meant for educational purposes only. Nothing here is to be construed as an investment or financial or taxation advice nor to be considered as an invitation or solicitation or advertisement for any financial product. Readers are advised to exercise discretion and should seek independent professional advice prior to making any investment decision in relation to any financial product. Aditya Birla Capital Group is not liable for any decision arising out of the use of this information.

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