Home | Articles | Infant | List of Vitamins That Are Important for Helping Babies Gain Weight at 6–12 Months

List of Vitamins That Are Important for Helping Babies Gain Weight at 6–12 Months

Infant
04/09/2026
Writter: Amanda Dwi Azaria
Reviewer: Chief Editor
List of Vitamins That Are Important for Helping Babies Gain Weight at 6–12 Months
Vitamins and minerals help support the growth of babies aged 6–12 months. Examples include Vitamin A, Vitamin B Complex, Vitamin C, Vitamin D & Calcium, Omega-3, Lysine, Zinc, and Iron. However, no vitamin directly causes a baby to gain weight.

When your little one reaches 6 months of age, their energy and nutritional needs begin to increase. Therefore, breast milk as the main source of nutrition needs to be complemented with complementary foods or solid foods. During this period, providing nutrient-dense foods is important to support growth, including healthy weight gain.

If you are looking for vitamins to help your baby gain weight at 6–12 months, it is important to understand that vitamins are not an instant weight-gain solution. Vitamins and minerals support various processes in the body, while healthy weight gain requires adequate and balanced amounts of energy, protein, healthy fats, carbohydrates, vitamins, and minerals.

Vitamins That Can Support Healthy Weight Gain in Babies 6–12 Months

A baby's weight is influenced by the adequacy of energy, protein, vitamins, and minerals obtained from breast milk and complementary foods. The following vitamins and minerals play important roles in supporting your little one's growth and development, making it important to obtain them through a varied and balanced diet.

1. Vitamin A

Vitamin A plays a role in supporting cell growth, eye health, and the immune system. Adequate vitamin A intake helps support healthy growth, which can contribute to appropriate weight gain according to your baby's age and developmental stage.

Moms can meet their baby's vitamin A needs through complementary foods such as liver, eggs, and yellow or orange fruits and vegetables, such as carrots. Vitamin A supplements should not be given without guidance and should follow recommendations from a healthcare professional.

2. Vitamin B Complex

Vitamin B complex, which includes vitamins B1, B2, B3, B6, B12, and folate, plays a role in energy metabolism and various bodily functions. Adequate B vitamins help the body convert nutrients from food into energy needed to support daily activities as well as your little one's growth and development.

Sources of B vitamins include meat, fish, eggs, legumes, age-appropriate dairy products, and other nutritious foods. A varied complementary feeding menu can help meet vitamin B needs while also providing the energy and nutrients needed to support healthy weight gain.

3. Vitamin C

Vitamin C plays a role in collagen production, which is needed for the growth and repair of body tissues. It also helps the body absorb iron from plant-based foods, thereby supporting the nutritional needs required during your baby's growth period.

Sources of vitamin C in complementary foods include oranges, guava, strawberries, tomatoes, broccoli, and bell peppers. Combine vitamin C-rich foods with sources of iron to improve iron absorption and help meet your little one's nutritional needs for healthy growth and weight gain.

4. Vitamin D & Calcium

Vitamin D helps the body absorb calcium, while calcium is needed for the formation and maintenance of healthy bones and teeth. Both nutrients are important for supporting your little one's physical growth, including healthy bone development as their weight and length increase.

Vitamin D can be obtained from foods such as fatty fish, including salmon and sardines, as well as egg yolks. Meanwhile, calcium can be obtained from yogurt, cheese, and calcium-fortified foods that are appropriate for babies. Vitamin D supplements do not directly increase body weight, so their use should follow a doctor's recommendations.

5. Omega-3

Omega-3 fatty acids, particularly DHA, are essential fats that support brain and eye development in babies. Although omega-3 is not a vitamin, it is an important nutrient in complementary foods because fat provides energy needed for growth and development.

Moms can provide omega-3 through fatty fish such as salmon and sardines. In addition to omega-3, fish also provides protein needed to build body tissues, making it a nutritious component of complementary foods to support your little one's growth and healthy weight gain.

6. Lysine

Lysine is an essential amino acid needed by the body to build proteins. Protein plays an important role in building and repairing body tissues, so adequate lysine intake helps support physical growth and healthy weight gain in babies.

Lysine can be obtained from protein-rich foods such as eggs, fish, meat, chicken, and soy products. Make sure complementary foods contain sufficient and varied sources of protein to help meet your baby's amino acid and other nutritional needs for healthy growth and development.

7. Zinc

Zinc plays a role in protein production, cell division, immune function, and growth. Adequate zinc intake is important for supporting your baby's growth, while zinc deficiency can be associated with stunted growth and reduced appetite.

Good sources of zinc include meat, fish, eggs, and other animal-based foods. Legumes and soybeans also contain zinc and can be included as part of a varied complementary feeding menu to help meet nutritional needs and support healthy weight gain.

8. Iron

Iron is needed to produce hemoglobin, which carries oxygen throughout the body, and also plays an important role in brain development. Adequate iron intake supports your baby's energy and bodily functions during the growth period, making it important for healthy development and weight gain.

Starting at around 6 months of age, a baby's iron needs increase, so complementary foods should provide iron-rich sources such as red meat, liver, fish, eggs, and iron-fortified foods. Iron deficiency can cause anemia and potentially interfere with your little one's growth and development.

Natural Sources of Vitamins for Helping Babies Gain Weight (Complementary Foods)

To support healthy growth, Moms should not focus solely on vitamins for helping babies gain weight at 6–12 months. Complementary foods should provide a variety of foods containing energy, protein, healthy fats, vitamins, and minerals.

Complementary foods are generally introduced when your little one reaches around 6 months of age. The amount, texture, and variety of foods can gradually be increased according to your baby's age and feeding abilities. Combining different food groups helps meet nutritional needs during the growth period.

1. Egg Yolks

Egg yolks contain protein, healthy fats, vitamin A, vitamin B12, folate, and iron, which are important for your little one's growth. Protein helps build and repair body tissues, while fat provides energy and supports brain development. Meanwhile, vitamins A and B12, folate, and iron play roles in immune function, blood cell production, and brain and nervous system development.

Make sure eggs are cooked thoroughly before giving them to your little one. The texture should also be adjusted to your baby's feeding abilities.

2. Fish

Fish is a source of protein, vitamin B12, selenium, and, in certain types such as salmon, omega-3 fatty acids such as DHA. Protein helps build body tissues, while DHA supports brain and eye development.

Choose low-mercury fish such as salmon and sardines. Make sure all bones are removed before serving fish to your little one to reduce the risk of choking.

3. Red Meat

Red meat contains protein, iron, zinc, and vitamin B12, which support your little one's growth. Protein helps build body tissues, iron supports hemoglobin production and brain development, zinc supports immune function and cell growth, while vitamin B12 plays a role in blood cell production and nervous system development.

Iron from meat is also more easily absorbed by the body than iron from some plant-based sources. For complementary foods, meat can be finely chopped, minced, or cooked until tender according to your baby's feeding abilities.

4. Chicken Liver

Chicken liver is a source of iron, vitamin A, vitamin B12, and folate. However, because it contains high amounts of vitamin A, liver should be given in appropriate amounts and frequency as part of a varied diet.

Make sure the chicken liver is thoroughly cooked and comes from a hygienic source. Moms should also avoid giving additional vitamin A supplements without guidance from a healthcare professional.

5. Soybeans

Soybeans contain plant-based protein, iron, zinc, and B vitamins that support your little one's growth and development. Protein helps build body tissues, iron supports blood cell production and brain development, zinc supports immune function and cell growth, while B vitamins help with energy metabolism and nervous system function.

Soy products such as tofu and tempeh can be included as sources of protein in complementary foods. Serve them in a texture appropriate for your baby's feeding abilities, cook them thoroughly, and avoid excessive amounts of added salt or sugar.

6. Carrots

Carrots are rich in beta-carotene, which the body converts into vitamin A. Vitamin A helps maintain eye health, supports the immune system, and plays a role in your little one's cell growth and development.

Carrots can be steamed until soft, then mashed or mixed into complementary food. To make the meal more nutritious, combine carrots with sources of protein, carbohydrates, and healthy fats.

7. Green Vegetables

Green vegetables such as spinach and broccoli contain folate, vitamin C, vitamin K, iron, and fiber. Folate plays a role in cell formation, vitamin C supports the immune system while helping the body absorb iron, and vitamin K supports blood clotting and bone health.

Green vegetables should not be the only component of complementary foods. Combine them with sources of protein, carbohydrates, and healthy fats to better meet your little one's energy and nutritional needs.

8. Cheese

Cheese contains protein, fat, calcium, vitamin B12, and phosphorus, which support your little one's growth. Protein helps build body tissues, while calcium and phosphorus play important roles in the development of bones and teeth.

Choose cheese that is appropriate for babies and pay attention to its sodium content. Cheese can be mixed into porridge or other complementary food recipes in appropriate amounts.

9. Avocado

Avocado contains unsaturated fats, fiber, folate, vitamin E, and vitamin K. Unsaturated fats provide energy and support brain development, while folate plays a role in cell formation and development.

Avocado is also a relatively energy-dense food, making it a good option for complementary foods. Moms can mash it or combine it with protein sources such as eggs, fish, or tofu.

10. Bananas

Bananas contain carbohydrates, vitamin B6, vitamin C, and potassium, which can help complement your little one's nutritional needs. Carbohydrates provide energy, vitamin B6 supports protein metabolism and nervous system function, while potassium supports muscle and nerve function.

Their soft texture makes bananas easy to mash for complementary foods. However, do not rely on bananas alone as a fruit source. Combine them with other foods to provide a more varied range of nutrients.

11. Oranges

Oranges are rich in vitamin C, folate, and various antioxidants. Vitamin C supports the immune system and improves iron absorption from plant-based foods, while folate plays a role in cell formation and development.

For babies, provide orange flesh that has been separated from seeds and any tough parts. Serve it in a form and texture appropriate for your baby's feeding abilities to reduce the risk of choking.

Conclusion

Vitamins and minerals are important for supporting your little one's growth, but no single vitamin can specifically make a baby gain weight. Healthy weight gain requires a combination of energy, protein, healthy fats, vitamins, and minerals from breast milk or appropriate milk, along with varied and nutrient-dense complementary foods.

Moms can provide nutrient-rich foods such as eggs, fish, meat, chicken liver, tofu, tempeh, vegetables, and fruits in textures appropriate for your baby's age and feeding abilities. If your little one's weight is not increasing or their growth chart does not follow the expected pattern, consult a doctor or dietitian to identify the underlying cause and determine their nutritional needs.

In addition to ensuring adequate nutrition, your little one's comfort during daily activities is also important. Moms can choose MAKUKU Slim Luxury Silky, a premium diaper featuring SAP Thin Core Technology that keeps the diaper thin and comfortable, as well as Natural Fine Silk, which feels soft against your baby's skin. Its high absorbency helps keep your little one dry for up to 12 hours and has been dermatologically tested to help prevent rashes and irritation.

FAQ

1. Can vitamins directly make a baby gain weight?

No, Moms. Vitamins do not directly cause weight gain. Vitamins and minerals support various processes in the body, while healthy weight gain requires adequate and balanced amounts of energy, protein, healthy fats, and other essential nutrients.

2. When should babies start complementary foods?

Complementary foods are generally introduced at around 6 months of age, when your little one's energy and nutritional needs begin to increase. They should be introduced gradually while considering your baby's readiness and feeding abilities.

3. What if my baby's weight does not increase?

If your little one's weight is not increasing according to their growth pattern or is decreasing, Moms should consult a doctor. The doctor can assess the growth chart, eating patterns, health condition, and other possible underlying causes.

Share on social media:
After article
Customer Care MAKUKU