Cholecalciferol and Nausea: What Users Say

• Fru...
• Taken for less than 1 month
• March 12, 2017

Cholecalciferol for Vitamin D Deficiency "I was told by my doctor that I am Vitamin D deficient and should take 5000 IU of vitamin D per day. I began taking the supplement and within 36 hours began having HORRIBLE leg pains and muscle aches. The pain in my legs was so bad I could barely walk. I was also extremely nauseated, so much so that I couldn't eat. I stopped the Vitamin D and in no time the muscle pains and nausea were gone. I now take 1000 IU of Vitamin D per day with no side effects. I know it's less than my doctor wants me to take but that's too bad. Why do doctors insist on such enormous amounts of Vitamin D without considering the side effects??? I would rather be Vitamin D deficient than suffer the side effects of a 'therapeutic' dose of Vitamin D."

• Ano...
• May 3, 2019

For Vitamin D Deficiency "I was feeling fine until I was diagnosed with vitamin D deficiency (4.6). I took 8000 IU of vitamin D3 once a week for a month. The first time I took it after 3 hours I felt sick all of a sudden, with terrible palpitations, extreme dizziness, nausea, and confusion. I thought I was dying! My doctor said it was impossible vitamin D caused this, so he told me to keep taking the drug. The second week I ended up in the ER, but everything was negative, and they told me it couldn't be vitamin D. I took it 4 times, once a week, until I asked my pharmacist about my symptoms, and he told me to stop immediately. During that month I had constipation, loss of appetite, extreme weight loss, dizziness, fatigue, muscle pain, anxiety, depression, high blood pressure, and scary palpitation episodes (10 times), all symptoms I never had before. Now it's been a month since I've stopped taking vitamin D, and my health is slowly improving. Now my vitamin D level is 16, so I guess the drug worked, but I would never take it again with all those side effects."

• Eri...
• Taken for less than 1 month
• August 22, 2021

For Vitamin D Deficiency "I was advised to take 2,000 IUs of cholecalciferol daily after being diagnosed with a vitamin D deficiency. About 6 hours after my first pill, I noticed my heart was racing, and I started having palpitations. Then the anxiety set in. At this point, I didn’t make the connection with the cholecalciferol, but after continuing to take it over the following days, the anxiety turned to absolute sweaty panic and dread, as well as insomnia. By day 4, I was horribly depressed, had no appetite, and was nauseous. I don’t think my doctor believed me when I told her the cholecalciferol was causing this, but I know that’s what it was. I later learned that cholecalciferol creates serotonin in your brain by increasing the enzyme tryptophan hydroxylase 2. If you get too much serotonin, you develop serotonin syndrome - and my experience aligned exactly with the symptoms of serotonin syndrome. Hopefully, this is helpful to others. For now, I’ll just keep my vitamin D deficiency."

• Anonymous
• Taken for less than 1 month
• August 29, 2021

Cholecalciferol for Vitamin D Deficiency "I had low vitamin D. My doctor put me on 50,000 IU/week. After the first dose, I have been to the ER twice. Dizzy, lightheaded, real high, anxiety, massive headaches, twitchy, coordination loss, high heart rate, photo and audio oversensitivity, mental confusion, spinning, eye pressure, 'pre-dreaming,' just shutting my eyes. I have to avoid light, sounds, movement. I make myself eat 'cause nausea and weight loss. Doctors dismiss it, but I have read about serotonin and other levels being too high. I regret taking this and currently waiting for my body to be deficient again just so I can feel OK. First 15 hours bad. Doctor said 2-3 days, but it's been my 6th day. Read after 15 days, vitamin D is down to 50%. 25% by 30 days. I avoid light, any vitamin D foods, anything to cause serotonin levels to go up. I was better off in my level mental state. Hope this may help calm you if you are having effects."

• Peb...
• Taken for less than 1 month
• February 6, 2021

For Vitamin D Deficiency "I have fibromyalgia, and the Dr. suggested I have my blood checked, and they found that I’m pretty low on vitamin D. I was put on cholecalciferol, 2x 800-unit caps a day. Initially, I was fine, but on day 4, my stomach started to whine and churn, and I was nauseous. On day 5, I was doubled up in pain, stomach cramps, diarrhea, a banging headache, puffy, bloated! I spoke to the Dr., who said it’s not a ‘normal response.’ She then rechecked the ‘possible other side effects,’ and there they were-lots of them. I’ve stopped taking the capsules, and 3 days later, I’m still poorly-less poorly, admittedly, but maybe these things should be started gradually. Nasty experience that’s still with me, but hopefully, it’ll continue to ease in the coming days. The Dr. suggested I let my gut settle, then resume once daily, but that is not going to happen."