Choosing the right supplements for the initial 3 months is a common concern for many parents, especially first-time moms and dads. During this crucial period, it's essential to provide the baby with specific nutrients to prevent congenital abnormalities and support overall development. So, what are these essential nutrients, and how should they be supplemented? Let's explore these questions in the following article!
1. Nutritional Requirements for Expecting Mothers in the First Trimester
To determine the ideal supplements for the first 3 months, understanding the nutritional needs of expecting mothers during this phase is crucial. Knowing what to eat and which nutrients to enhance is vital for mothers during the initial trimester. Key points to consider in the nutritional regimen for pregnant women include:

Weight Gain Initiates in the First Trimester of Pregnancy
- Regarding the energy needs for expectant mothers in the first 3 months: Approximately 2200kcal - 2500 kcal per day.
- Weight progression for pregnant women: On average, the weight of pregnant women will increase by about 1 - 2kg in the first 3 months. In cases where the mother is underweight, additional nutrient supplementation is required.
- Nutritional elements requiring enhanced supplementation: Pregnant women in the first trimester need comprehensive supplementation of various vitamins and minerals. In addition, it's crucial to increase the intake of certain nutrients such as iron, calcium, folic acid, and other essential vitamins.
2. What Supplements Are Recommended in the First 3 Months? Expert Insights
Augmenting the supplementation of specific nutrients during the initial 3 months of pregnancy is particularly crucial. Nutrients that expectant mothers should focus on include:
2.1. What Supplements Are Recommended in the First 3 Months? Iron Tablets
Experts recommend that expectant mothers in the first 3 months should supplement with iron. As the blood volume of pregnant women increases by 50%, iron supplementation provides additional materials for synthesizing blood cells. Some experts even advise starting supplementation 3 or 2 months before conception and continuing to use it after giving birth.
The reasons why pregnant women should pay attention to iron supplementation in the first 3 months are:
- Avoid maternal anemia and ensure an adequate blood supply for fetal development.
- Enhance the immune system of pregnant women, preventing the invasion of disease-causing agents such as bacteria, viruses, etc.
- When pregnant women lack iron, they often experience fatigue, insomnia, and loss of appetite.

Iron - an Essential Nutrient for Every Expectant Mother
- The recommended iron intake for pregnant women in the first 3 months is about 30mg/day. Although iron can be obtained from daily foods, only a portion is absorbed, and the rest is excreted from the body. So, what should pregnant women supplement in the first 3 months? It's advisable to add iron supplements. However, before supplementing, it's crucial to research the dosage, sources, usage methods. It's best to consult with a doctor or pharmacist for expert advice.
2.2. What Supplements Are Recommended in the First 3 Months? Vitamin B6
During early pregnancy, mothers often struggle with morning sickness. In such cases, doctors commonly prescribe a low dose of vitamin B6 for pregnant women. It helps alleviate nausea and reduces morning sickness effectively. Additionally, it contributes to the formation of blood cells and influences the baby's nervous system.
However, using vitamin B6 independently or using prenatal vitamins with high levels of vitamin B6 can be extremely dangerous. Excessive vitamin B6 can lead to nerve damage, adversely affecting the child's development. Therefore, when considering vitamin B6 supplementation, pregnant women should seek advice from experts and doctors for detailed guidance on dosage and usage.
2.3. What Supplements Are Recommended in the First 3 Months? Folic Acid
Folic acid, also known as vitamin B9, is an extremely crucial substance that needs to be supplemented during the first 3 months for expectant mothers. Experts even recommend taking folic acid 3 - 4 months before conception. The reason for early supplementation of this vitamin is:

Folic Acid Helps Prevent Fetal Neural Tube Defects
- Folic acid can prevent the risk of neural tube defects in infants. This helps prevent serious conditions such as spinal cord clefts, skull malformations, hydrocephalus, etc.
- The cell division process of the fetus, embryonic development, the increase in the mother's uterus size, etc., all require folic acid.
- A deficiency in folic acid can lead to anemia, increased risk of miscarriage, preterm birth, or low birth weight.
During the first 3 months of pregnancy, expectant mothers need about 400 mcg of folic acid per day. Folic acid can be obtained from foods like animal liver, green leafy vegetables, broccoli, chicken, beef, etc. However, to ensure an adequate supply according to recommendations, pregnant women should supplement with additional vitamins containing folic acid.
2.4. What Supplements Are Recommended in the First 3 Months? Vitamin B12
Besides vitamins like B6 and B9, what should pregnant women consider supplementing in the first 3 months? Mothers-to-be may contemplate adding Vitamin B12 to their regimen. Alongside folic acid, Vitamin B12 also plays a role in preventing neural tube defects in the fetus. The recommended daily intake of Vitamin B12 for pregnant women is approximately 2.6 mcg/day.
What to supplement in the first 3 months? Calcium supplements
It's evident that the calcium requirements for pregnant women in the initial 3 months are notably high, especially among various nutrients. The health of the mother and the development of the fetus in the first 3 months heavily depend on the supplied amount of calcium:

Mothers in the First 3 Months Need Enhanced Calcium Supplementation
- Calcium directly influences the formation of the skeletal system, blood clotting, muscle contraction, and nerve transmission. Insufficient calcium supply to the fetus increases the risk of premature birth, brittle bones, and delayed intellectual development.
- Mothers who receive adequate calcium supplementation will have robust skeletal systems. Conversely, calcium-deficient mothers often experience cramps, back pain, susceptibility to osteoporosis, brittle bones, and fractures.
To meet the daily requirement of 800 mg of calcium, pregnant women need to consume calcium-rich foods and supplement additionally from calcium-enriched products. The recommended type of calcium for expectant mothers is organic calcium in liquid or tablet form. The most suitable time to take calcium is an hour after breakfast; it's not advisable to take it in the evening to prevent calcium sedimentation.
3. Important Considerations for Supplement Use in the First 3 Months
The early stages of pregnancy are highly sensitive, and an excess or deficiency of any nutrient can impact the baby's development. Therefore, when using supplements in the first 3 months, consider the following:
- Before using any supplement, mothers should undergo a health check to understand their health status. This allows them to consult with a doctor about what supplements to take in the first 3 months. Alternatively, they can seek advice when exploring and considering specific products.

What Supplements Should Pregnant Women Take in the First 3 Months: Consult with a Doctor
- When supplementing various nutrients, mothers should pay attention to the timing of intake to avoid absorption competition. For example, iron and calcium taken together can lead to absorption competition. Pregnant women should take calcium and iron two hours apart.
- If experiencing unwanted side effects, temporarily pause supplement use and seek advice from a doctor or pharmacist.
- Take supplements as prescribed by the doctor or follow the recommended dosage from the manufacturer.
- Actively consume fruits, green vegetables, and stay hydrated to alleviate symptoms such as constipation or heat when taking iron or calcium supplements.
Hopefully, this article has helped address the question of what supplements to take in the first 3 months. It guides expectant mothers on what to supplement and eat during the initial trimester for a healthy pregnancy. Wishing both the mother and baby good health!
