Why Do Vitamins Make me Nauseous?

Why Do Vitamins Make me Nauseous?

Do you ever wonder why vitamins make you nauseous or upset your stomach? It can be a common issue, and there are several reasons for this. This blog post will cover a few common causes and explain how you can avoid feeling nauseous when taking vitamins. Keep reading to learn more!

What are Fat-Soluble Vitamins?

Fat-soluble vitamins are a type of vitamin stored in the body's fat tissue. These vitamins are not excreted from the body, so they can build up to toxic levels if someone takes too much of them. Fat-soluble vitamins and minerals are A, D, E, and K.

People who take certain medications may need to be careful about taking fat-soluble vitamins because the medicines can interfere with the absorption of these vitamins. Fat-soluble vitamins can cause stomach issues after taking them in large doses and even stomach cramps.

For some people, an additional supplement of iron may be required. Iron is essential for many functions in the body, including making hemoglobin which carries oxygen in the blood. Iron deficiency can cause anemia, which means there are not enough red blood cells to carry oxygen to the tissues. This can cause fatigue, shortness of breath, and other symptoms. Taking iron supplements may help treat or prevent iron deficiency anemia.

What are Water-Soluble Vitamins?

Water-soluble vitamins dissolve in water and are absorbed by the body with higher filtration. Because of this, they tend to be easier on your stomach. They include the B-complex vitamins and vitamin C. These vitamins are not stored in the body and must be replenished daily.

Most people get enough of these vitamins from their diet, but some may need supplements. For example, gastrointestinal disorders may have trouble absorbing water-soluble vitamins from food. 

Because your body doesn't store water-soluble vitamins like vitamin C, it is essential to include them in your diet.

Why can vitamins make you nauseous after taking them?

The absorption of vitamins like A, D, E, and K is done through the small intestine, which handles absorbing water and salt. All these vitamins, except for water-soluble vitamins, are fat or fat-soluble. This means they are absorbed from the small intestine through the bile and the lymphatic system, which are not equipped with the best filtering mechanism. The bile and the lymphatic fluid will dissolve the vitamins into the bloodstream; you may get nauseous or even throw up.

The absorption of water-soluble vitamins, such as B and C, also happens through the small intestine. However, these vitamins are dissolved in water and absorbed through the cells lining the small intestine. So, this filtering system is much better equipped to absorb water-soluble vitamins.

Why you need to eat less before a meal

When your stomach is empty, your body produces more gas, causing the bloating and discomfort felt with nausea. Eating less before a meal reduces the number of times your stomach is emptied, reducing the amount of excess gas produced.

Eating less before a meal may also help you digest your food more, preventing you from having discomfort later on. For instance, if you have a lot of gas during a meal, eating less before your meal can reduce the amount of gas produced while you digest your food.

Your body needs calories to function, so eating smaller meals throughout the day is still essential. Instead, try to eat less before each meal to help reduce discomfort and get the best results from your eating routine.

Why taking vitamins on an empty stomach can cause nausea.

When you take vitamins on an empty stomach, the lack of food in the stomach slows the digestion process. As a result, the body takes a long time to break down the vitamin and does not break it down efficiently, making it stay in the system for a more extended period. This may make you feel ill.

The body is susceptible when digesting vitamins, even fat-soluble vitamins. This sensitivity results from the body's ability to absorb the vitamins. Since the body cannot take in all vitamins at once, it stores them and releases them over time.

The liver is the organ responsible for breaking down vitamins in the body. When food is in the stomach, the liver breaks down the vitamin. However, the liver cannot break down vitamins when no food is in the stomach. 

How to prevent nausea from taking vitamins

If you are taking vitamins, here's what to do if you experience nausea


  • Make adjustments to your supplement routine. You should take fat-soluble vitamins with a meal because an empty stomach can make you nauseous.

  • If you have a fat-soluble vitamin, you can take it with food.

  • If you have water-soluble vitamins, they are best absorbed on an empty stomach.

Benefits of Taking Vitamins


Taking vitamins has a lot of benefits. Not only does eating vitamin-dense foods provide the nutrients your body needs to perform at peak efficiency, but it can also help you feel healthier and boost your energy levels which comes from taking the vitamins your body needs for it's best performance.

Explore the benefits of taking vitamins with these helpful tips:

Increase your energy levels: Eating vitamin-dense foods can improve your energy levels and keep you alert throughout the day. When you incorporate vitamin-dense foods into your diet, you will feel better and have more energy to complete tasks.

Improve digestion: Eating foods rich in vitamins can help improve your digestive system. When you eat vitamin-dense foods, your gut bacteria feed off the nutrients, including vitamins, in these foods. This aids digestion and helps your body absorb nutrients more.

Boost your immunity: Vitamins help your body fight infections and diseases by boosting your immune system. When you take vitamin supplements, your body receives more vitamins to defend against bacteria and other pathogens. Supplements can also shore up any holes in your diet.

Improve your mood: Vitamins can regulate and improve your daily feelings. Certain nutrients found in vitamins, such as B vitamins, may help your body produce serotonin, a neurotransmitter that promotes happiness and regulates mood.


Multivitamins are a great way to ensure you get all the necessary nutrients. They can make getting the recommended daily intake of vitamins and minerals easier and are a convenient way to supplement your diet. 

Most multivitamins contain all the essential vitamins and minerals and some non-essential nutrients. Because multivitamins contain minerals, they may cause irritation in your otherwise empty stomach. The exact composition of a multivitamin depends on the brand, so be sure to read the label.

When taking a multivitamin, there are many different brands, formulations, and even gummy vitamins. Additionally, for those who have problems swallowing pills, there are chewable vitamins so it's essential to choose one that's right for you. Be sure to talk to your doctor or pharmacist if you have questions about which product is best for you.

When Taking Your Vitamins

Assuming you would like tips on the best way to take vitamins: 

One essential vitamin is Vitamin E. This can be found in many different forms, including capsules, tablets, and even liquids. It is necessary to take this vitamin daily, as it has been linked with several health benefits. These benefits include reducing the risk of heart disease, stroke, and cancer.

Another essential vitamin is prenatal vitamins. These are taken by pregnant women or trying to become pregnant. Prenatal vitamins are essential because they help ensure the baby gets all the necessary nutrients.

Finally, it is also essential to take a daily multivitamin. This ensures that your body gets all the daily vitamins and minerals. As always, consult your doctor before making any changes to your routine.

What to do if You are Sick After Taking Vitamins

When you are sick after taking vitamins, there are a few things you can do to avoid nausea:

  1. Take your vitamins first thing in the morning. This will give your body time to adjust to the new level of vitamins in your system.
  2. Drink plenty of fluids. This will help flush the excess vitamins out of your system and reduce the chance of nausea.
  3. Try taking a small amount of ginger. Ginger has been shown to help with nausea and can be found in many forms, such as capsules, tea, or candy.


In conclusion, vitamins can make you feel sick or nauseous because they are difficult to digest. If vitamins make you feel sick, you may want to take them with food if you take fat-soluble vitamins. If you're taking water-soluble vitamins, you want to take those on an empty stomach. Always consult a physician, and understand that supplements with medications may cause side effects. If you experience more alarming symptoms, see your doctor and back off those vitamins immediately.