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NOW Supplements Vitamin D-3
SCIENTIFIC SCORE
Moderately Effective
Based on 23 Researches
8.2
USERS' SCORE
Good
Based on 9 Reviews
8.6
Supplement Facts
Serving Size: 1 Softgel
Amount Per Serving
%DV
Vitamin D3 (as Cholecalciferol) (From Lanolin)
1,250 mcg (50,000 IU)
6250%

Top Medical Research Studies

9
Vitamin D treatment reduces BPPV
Reduction of recurrence rate of benign paroxysmal positional vertigo by treatment of severe vitamin D deficiency.
Directly explores vitamin D impact
We sought to understand the impact of severe vitamin D deficiency on benign paroxysmal positional vertigo (BPPV), a common cause of dizziness. Previous studies showed a connection between low vitamin D levels and both the onset and recurrence of BPPV, but none had conclusively demonstrated that addressing this deficiency could lessen the recurrence of symptoms.

To examine this further, we included patients diagnosed with unilateral, idiopathic posterior canal BPPV and severe vitamin D deficiency, indicated by levels of 25-hydroxyvitamin D3 at or below 10 ng/ml. After thorough evaluations including hearing tests and balance assessments, we prescribed vitamin D therapy to our participants.

Over the following months, we monitored the changes in their vitamin D levels and followed up with them for 18 months to observe any recurrence of dizziness. Our findings revealed that patients who showed an improvement in their vitamin D levels experienced a significant reduction in the recurrence of BPPV symptoms.

This suggests that by addressing vitamin D deficiency, we can potentially offer a more effective approach to managing BPPV—lessening those troublesome dizzy spells that can really impact quality of life.
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9.5
Vitamin D may alleviate dizziness
A Rare Presentation of Multicanal Benign Paroxysmal Positional Vertigo in a Premenopausal Woman With Osteopenia: A Case Report.
Vitamin D's effect on dizziness
We observed a unique case of a 35-year-old woman experiencing non-traumatic multicanal benign paroxysmal positional vertigo (BPPV). Initially diagnosed with unilateral posterior canal BPPV, her condition evolved to include both horizontal and anterior canals over time.

Throughout 2012 to 2014, conventional treatments fell short in resolving her symptoms, despite her undergoing canalith repositioning treatments (CRTs). Remarkably, in 2015, we noted a correlation between her self-treatment of vitamin D—at a dose of 5000 IU daily—and the subsequent resolution of her vertigo symptoms.

This case stands out not just because of the uncommon progression from single-canal to multi-canal BPPV, but also highlights the potential role of vitamin D in symptom management. It suggests that vitamin D might offer benefits for those suffering from dizziness related to vertigo, particularly in cases where traditional treatments are ineffective.
Read More
9
Vitamin D affects BPPV recurrence
Correlation between serum vitamin D level and benign paroxysmal positional vertigo recurrence.
Highly relevant to dizziness treatment
We explored the connection between serum vitamin D levels and the recurrence of benign paroxysmal positional vertigo (BPPV), a leading cause of dizziness. In this study, we reviewed the medical charts of 50 patients diagnosed with BPPV, focusing on two distinct groups: those who experienced recurring episodes and those who did not.

Our findings revealed that the average serum vitamin D level in patients who had recurring BPPV was significantly lower (12.9 ng/mL) compared to those without recurrences (19.2 ng/mL). This suggests that lower vitamin D levels might be linked to a higher chance of dizziness from BPPV recurrences.

We also identified that a vitamin D level below 12.74 ng/mL was associated with a significantly higher recurrence rate of 70.5%, compared to just 22.5% for those above this threshold. This indicates that monitoring and managing vitamin D levels could be crucial for patients at risk for recurring episodes of BPPV.

In summary, our findings underline the potential importance of vitamin D in managing dizziness, particularly in individuals suffering from BPPV. It seems that keeping an adequate level of this vitamin might help reduce the risk of future vertigo episodes.
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Most Useful Reviews

9.5
Dizziness relief
Hamdallah, I found relief from dizziness and fatigue after taking a weekly pill along with cod liver oil.
Read More
9.5
Improved energy
I was pleasantly surprised by the excellent price. This product lasted about 50 weeks, and I noticed a marked difference in my energy levels. The dizziness I experienced upon waking disappeared.
Read More
9.5
Dizziness vanished
After experiencing dizziness, lethargy, and bone pain, I improved significantly after taking this supplement; all my symptoms have vanished.
Read More

Medical Researches

SCIENTIFIC SCORE
Moderately Effective
Based on 23 Researches
8.2
  • All Researches
9.5
Vitamin D may alleviate dizziness
A Rare Presentation of Multicanal Benign Paroxysmal Positional Vertigo in a Premenopausal Woman With Osteopenia: A Case Report.
Vitamin D's effect on dizziness
We observed a unique case of a 35-year-old woman experiencing non-traumatic multicanal benign paroxysmal positional vertigo (BPPV). Initially diagnosed with unilateral posterior canal BPPV, her condition evolved to include both horizontal and anterior canals over time.

Throughout 2012 to 2014, conventional treatments fell short in resolving her symptoms, despite her undergoing canalith repositioning treatments (CRTs). Remarkably, in 2015, we noted a correlation between her self-treatment of vitamin D—at a dose of 5000 IU daily—and the subsequent resolution of her vertigo symptoms.

This case stands out not just because of the uncommon progression from single-canal to multi-canal BPPV, but also highlights the potential role of vitamin D in symptom management. It suggests that vitamin D might offer benefits for those suffering from dizziness related to vertigo, particularly in cases where traditional treatments are ineffective.
Read More
9.5
Vitamin D's role in dizziness
SUCCESSFUL REPOSITIONING PROCEDURE FOR BENIGN PAROXYSMAL POSITIONAL VERTIGO AFTER STAPEDOTOMY.
Moderate importance on vitamin D
We explored the connection between vitamin D deficiency and dizziness following a successful left-sided stapedotomy. In our case study, a 56-year-old woman who underwent the stapedotomy for otosclerosis experienced postoperative dizziness a week later. Interestingly, this dizziness occurred mainly when she turned to her left side while lying in bed.

To understand her condition better, we conducted an electrophysiological assessment of her vestibular function, which revealed a typical response associated with benign paroxysmal positional vertigo (BPPV). Notably, we found that the patient had a deficiency in vitamin D levels in her serum.

After a 7-day treatment using Epley's maneuver, which is a common approach for BPPV, the patient's symptoms resolved completely. This highlights the importance of recognizing BPPV as a potential complication after stapes surgery, especially when vitamin D levels are low.

Our findings suggest that monitoring serum levels of total calcium and vitamin D could be crucial not only for understanding dizziness but also in preventing its recurrence after such surgeries.
Read More
9.5
Vitamin D reduces dizziness recurrences
Prevention of Recurrent Benign Paroxysmal Positional Vertigo: The Role of Combined Supplementation with Vitamin D and Antioxidants.
Supplementation impact on dizziness
We explored how vitamin D3, coupled with antioxidant supplements, can help prevent recurrent cases of benign paroxysmal positional vertigo (BPPV), a common type of dizziness. In this multicentric trial involving 128 patients who experienced frequent episodes of BPPV, we organized participants into three groups based on their vitamin D levels and treatment.

The first group received vitamin D3 along with a combination of alpha-lipoic acid, Carnosine, and Zinc, as well as vitamins from the B group. The second group, with sufficient vitamin D but no supplementation, served as a control. Meanwhile, the third group had sufficient vitamin D and received a different antioxidant mix.

After a six-month follow-up, we observed a significant reduction in dizziness relapses only among those in the first group who had insufficient or deficient vitamin D levels prior to treatment. Unfortunately, the other groups did not show similar improvements. This highlights the importance of addressing vitamin D deficiency, especially for those prone to recurrent dizziness. However, we must be cautious, as the combination of different supplements makes it challenging to isolate the effects solely attributed to vitamin D3.
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9.5
Vitamin D3 reduces dizziness recurrences
The effect of serum vitamin D normalization in preventing recurrences of benign paroxysmal positional vertigo: A case-control study.
Vitamin D's effect on BPPV
We explored how normalization of vitamin D levels may impact the recurrence of dizziness caused by benign paroxysmal positional vertigo (BPPV). This case-control study included patients with a history of BPPV who had low serum vitamin D levels. We divided participants into two groups: one received additional vitamin D3, while both groups underwent Epley rehabilitation therapy.

Over the course of two months, the treatment group raised their vitamin D levels significantly, while the control group did not see any change. Following this treatment period, we observed a remarkable difference in the recurrence of BPPV attacks; the group receiving vitamin D3 experienced far fewer episodes compared to the control group.

Our results indicate that boosting vitamin D3 levels significantly reduces the number of recurrent dizziness episodes in patients with BPPV. This suggests that addressing vitamin D deficiency may play a key role in managing dizziness in affected patients.
Read More
9
Vitamin D enhances BPPV management
Evaluating the Vitamin D Deficiency-BPPV Link: Correlation or Causation?
Study reveals significant Vitamin D link
We investigated how Vitamin D levels impact dizziness, specifically in individuals with Benign Paroxysmal Positional Vertigo (BPPV). This condition causes sudden episodes of vertigo, often triggered by changes in head position.

In our study, we enrolled 100 patients diagnosed with BPPV and measured their Vitamin D levels. Based on these measurements, we classified participants as having deficient, insufficient, or sufficient Vitamin D levels. Those with deficiencies received Vitamin D supplementation of 2000 IU daily for six months.

Over the course of a year, we followed these patients monthly, monitoring both the frequency and severity of their BPPV episodes using the Vertigo Symptom Scale. Our findings were quite significant: those with Vitamin D deficiency experienced BPPV at a rate of 71%, compared to only 20% in those who had sufficient Vitamin D levels. Moreover, the severity of vertigo symptoms was notably higher in the deficient group.

Importantly, we observed that supplementation appeared to reduce both the incidence and severity of BPPV episodes over time. This highlights the potential role of Vitamin D in supporting vestibular health and suggests it may be a valuable component of managing BPPV. However, further controlled studies are needed to fully understand these connections and their implications for patient care.
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User Reviews

USERS' SCORE
Good
Based on 9 Reviews
8.6
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9.5
Dizziness relief
Hamdallah, I found relief from dizziness and fatigue after taking a weekly pill along with cod liver oil.
9.5
Improved energy
I was pleasantly surprised by the excellent price. This product lasted about 50 weeks, and I noticed a marked difference in my energy levels. The dizziness I experienced upon waking disappeared.
9.5
Dizziness vanished
After experiencing dizziness, lethargy, and bone pain, I improved significantly after taking this supplement; all my symptoms have vanished.
8.3
No dizziness
I love this product. It hasn’t upset my stomach, and I’ve not noticed a bad taste. After a month, my big vitamin D deficiency caused dizziness and lethargy, but it has significantly improved.
8.8
Reduced dizziness
Vitamin D is crucial; many suffer from a deficiency, leading to symptoms like dizziness. After taking a high dose weekly, I noticed a significant improvement in my symptoms. It’s advisable to take it with a meal for better absorption. The pill size is manageable, and it does not irritate the throat.
Read More
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