Yes, taking vitamin D supplements can cause or worsen acid reflux or stomach upset in some individuals, particularly if taken on an empty stomach or in high doses. This is an reported side effect, though the exact mechanism isn't fully understood.
Taking too much vitamin D leads to calcium buildup (hypercalcemia), causing physical signs like nausea/vomiting, fatigue/weakness, frequent urination & excessive thirst, constipation, and confusion/disorientation, alongside potential bone pain or kidney stones, often from supplements, not sun exposure.
If you are experiencing symptoms such as acid reflux, muscle cramps, headaches, and (as discussed) constipation, it could be that your Vitamin D supplement is driving down Magnesium levels.
Certain components in multivitamins, like potassium and iron, can trigger acid reflux symptoms. Other medications, like antibiotics and pain relievers, may also increase your risk of heartburn symptoms. If you're taking a multivitamin and experiencing heartburn, discuss your symptoms with your healthcare provider.
Its not super common, but some people do experience headaches or light-headedness after starting vitamin D supplementation. These symptoms are usually mild and temporary, and will ease off after your body get used to taking them.
Health effects of vitamin D toxicity
The main concern of vitamin D toxicity is a buildup of calcium in the blood. This is called hypercalcemia. Hypercalcemia can cause upset stomach and vomiting, weakness, and frequent urination. It also can lead to bone pain and kidney troubles such as kidney stones.
Taking too many vitamin D supplements over a long period of time can cause too much calcium to build up in the body (hypercalcaemia). This can weaken the bones and damage the kidneys and the heart. If you choose to take vitamin D supplements, 10 micrograms a day will be enough for most people.
Causes of heartburn and acid reflux
certain food and drink – such as coffee, tomatoes, alcohol, chocolate and fatty or spicy foods. being overweight. smoking. pregnancy - find out more about indigestion and heartburn in pregnancy.
Factors that can aggravate acid reflux include:
adults and children aged over 11 years should avoid daily high dose vitamin D supplements containing more than 100 micrograms/µg (4000 IU). This applies to pregnant and breastfeeding women, the elderly, and children aged 11 to 17 years.
Vitamin D is possibly unsafe when used in higher amounts during pregnancy or while breast-feeding. Using higher doses might cause harm to the infant. Children: Vitamin D is likely safe in children when taken by mouth in recommended amounts. But it is possibly unsafe to take vitamin D in higher doses, long-term.
Yes, you can do a vitamin D test at home using simple finger-prick kits (like TouchBio, 2San, We Test Bio) that provide quick, preliminary results (often in 10 mins) by analyzing a drop of blood to check if levels are sufficient, insufficient, or deficient, helping you monitor bone health and immune support, but you should always discuss abnormal results with a doctor for proper diagnosis and treatment.
But how do you flush vitamin D out of your system – and can you even do that? Yes, by ensuring you consume plenty of water. This will encourage urination, allowing your body to shed the excess vitamin D and calcium more quickly. Prescription diuretics like furosemide can also be helpful.
Not Recommended: B-complex vitamins, chondroitin, glucosamine, peppermint oil, pepsin, HCL, effervescent Vitamin C, lemon, herbal bitters, and apple cider vinegar. All are popular supplements that can cause or worsen acid reflux, GERD and Respiratory Reflux (aka LPR).
High-Resolution Esophageal Manometry
Manometry testing assesses the pressure in and movement of the esophagus, so that doctors can determine how well food and liquids move from the mouth to the stomach and whether problems with muscles or nerves in the esophagus may be the cause of GERD.
Probiotics may help reduce symptoms of gastroesophageal reflux disease (GERD), but more high-quality studies are needed. Species of bacteria within the Lactobacillus and Bifidobacterium groups are most associated with benefits for acid reflux.
Heartburn-like pain is a common symptom of gastroesophageal reflux disease (GERD), but several other conditions can cause a burning feeling in your chest, including gallstones, stomach ulcer and esophageal cancer.
To help manage acid reflux at home, try:
For the test, you'll drink half a glass (4 ounces) of cold water combined with a quarter teaspoon of baking soda, on an empty stomach. Then time how long it takes you to burp. If it takes longer than three to five minutes, the theory goes, you don't have enough stomach acid.
The two most common mistakes when taking vitamin D are taking it without adequate fatty foods for absorption, and neglecting to take it with Vitamin K2 and magnesium, which are crucial for directing calcium to bones and activating the vitamin D in your body, respectively, leading to ineffective supplementation or calcium buildup issues. Many also mistakenly choose the less effective D2 form over D3, or take incorrect dosages without blood tests, according to this snippet from Healthshots, this snippet from GrassrootsHealth, this snippet from Yahoo! Health, this snippet from the Cleveland Clinic Journal of Medicine, and this snippet from Verywell Mind.
The symptoms include:
Vitamin D supplements can interact with other medications. Examples of vitamin D interactions include atorvastatin (Lipitor), cholestyramine (Prevalite) and phenytoin (Dilantin, Phenytek). Other Vitamin D drug interactions include orlistat (Xenical, Alli), digoxin (Lanoxin), and hydrochlorothiazide (Microzide).
There are some risks of taking too much vitamin D, including gas and bloating. Vitamin D overdose (hypervitaminosis D) happens when you take an excessive amount of the vitamin. This can lead to higher levels of calcium in the blood (hypercalcemia), which can disrupt your digestive system.
Safety and side effects
Taking more than 4,000 IU a day of vitamin D might cause: Upset stomach and vomiting. Weight loss and not wanting to eat. Muscle weakness.