Vital for calcium absorption and the maintenance of healthy bones and teeth. Supports cellular health and proper nervous system and immune function. How Does NSI® Vitamin D3 work? Vitamin D3, also known as cholecalciferol, is a form of vitamin D that the body manufactures when skin is exposed to UV radiation from the sun. It's converted from food sources and sunlight into its active form, calcitriol, by the liver and kidneys. Vitamin D is necessary for the maintenance of healthy calcium and phosphorous levels in the body. Calcium, the main structural element in bones and teeth, can only be absorbed by the body when vitamin D is present. Vitamin D is therefore essential for building and maintaining healthy bones and teeth. It's also believed to contribute to increased muscle strength, which may help improve balance and reduce the risk of falls among the elderly. Vitamin D also plays a part in regulating cellular growth and keeping the nervous and immune system functioning properly. A review article in the September 2006 issue of Progress Biophysics Molecular Biology indicated that vitamin D can also help maintain healthy blood pressure, blood sugar and overall cellular health¹. It's estimated that a significant percentage of adults suffer from vitamin D deficiency. Vitamin D deficiency is associated with a variety of health complications, including rickets (in which bones are unable to properly calcify, or harden) in children, poor prostate health in men and poor bone health in older adults. The elderly, alcoholics and strict vegetarians (vegans) are particularly at risk for deficiency and should consider regular supplementation. Individuals with darker skin pigments may also be at increased risk, as darker skin contains higher levels of melanin, which may inhibit the skin's ability to produce vitamin D from sunlight. Also, people with intestinal malabsorption, hyperthyroidism, liver or kidney disease, or pancreatic conditions may be at risk. Vitamin D deficiencies are common among those with overactive parathyroid glands. This gland is responsible for maintaining calcium levels, which is vital for proper functioning of the muscular and nervous systems. One study found that insufficient levels of immune cells were produced in the thymus glands of laboratory animals with vitamin D deficiencies. However, a normal eight-week vitamin D intake led to healthy levels. NSI® Vitamin D3 is better because it:. Provides 1,000 IU of vitamin D3 per serving. Is the active and preferable form of vitamin D. . Did You Know? All NSI supplements are packaged in HDPE (High Density Polyethylene) bottles. These bottles keep moisture vapor out, protecting the freshness and integrity of their contents, and are 400% more effective compared other brands currently using PET (Polyethylene Terephthalate) bottles. HDPE bottles do not break as glass can and are also recyclable so we urge you to please recycle them.
Average Customer Rating:
4.8 out of 5
77 of 78 (99%) customers would recommend this product to a friend.
Customer Reviews for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
June 21, 2009
By Fashionfrom Ky.
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"easy to use and effective"
Age:
55-64
Gender:
Female
Daily supplement usage:
1-2 supplements daily
Referral source:
Physician
Reason for usage:
Promote overall health
Duration of use:
30-60 days
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Review 2 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
Great Product,June 12, 2009
By jabberfrom Arizona
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"Vitamin D3 is necessary to help absorb calicum in the bones."
Age:
65-74
Gender:
Female
Daily supplement usage:
6+ supplements daily
Referral source:
Physician
Reason for usage:
Specific health concern
Duration of use:
61-180 days
Share this Review:
Review 3 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
LOVE THIS!,May 17, 2009
By BERYfrom New Hampshire
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"This has been our favorite D supplement. Small and super easy to swallow. Definitely recommend."
Age:
25-34
Gender:
Female
Daily supplement usage:
3-5 supplements daily
Referral source:
Physician
Reason for usage:
Promote overall health
Share this Review:
Review 4 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
Great Buy!,May 7, 2009
By 2twinsfrom Midland, Tx
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"Price is a big plus. NSI Vitamin D3 (as cholecalciferol) -- 1000 IU - 200 Capsules compares to more expensive brands."
Age:
45-54
Gender:
Female
Daily supplement usage:
6+ supplements daily
Referral source:
Self-referred
Reason for usage:
Promote overall health
Duration of use:
Less than 30 days
Share this Review:
Review 5 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
Excellant Purchase,May 5, 2009
By Kaylafrom charlotte, nc
"I do not get much sun so taking this product has helped me in my overall health"
Age:
45-54
Gender:
Female
Daily supplement usage:
1-2 supplements daily
Referral source:
Friend
Reason for usage:
Promote overall health
Duration of use:
61-180 days
Share this Review:
Review 6 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
AMAZING product,April 1, 2009
By AshleighsClosetfrom Dayton, nv
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"I'd reccomend this to anyone!"
Age:
25-34
Gender:
Female
Daily supplement usage:
6+ supplements daily
Referral source:
Friend
Reason for usage:
Specific health concern
Duration of use:
Less than 30 days
Share this Review:
Review 7 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
Satisfied,March 26, 2009
By Hubbardfrom Northern NJ
Value:
5
out of 5
Quality:
4
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"Good quality, excellent value for such an important supplement."
Age:
55-64
Gender:
Male
Daily supplement usage:
6+ supplements daily
Referral source:
Self-referred
Reason for usage:
Promote overall health
Duration of use:
30-60 days
Share this Review:
Review 8 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
Great Product,January 3, 2009
By GrndadsSongBirdfrom WV
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"I have noticed since taking this product that I have more energy...I don't have that sluggish, sleepy feeling in the afternoons. This is a great product and I continue to keep buying it!"
Age:
45-54
Gender:
Female
Daily supplement usage:
3-5 supplements daily
Referral source:
Self-referred
Reason for usage:
Promote overall health
Duration of use:
Over 180 days
Share this Review:
Review 9 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Top 100 Contributor
Overall Rating:
5
out of 5
Great buy!,December 25, 2008
By AWestfrom CT
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"With all of the emerging research proving the health benefits of higher intakes than RDA levels, who can go wrong with a suplement like this? It offers a large quantity at a fantastic price but most importantly, a bioavailable form of the vitamin!"
Age:
18-24
Gender:
Male
Daily supplement usage:
6+ supplements daily
Referral source:
Self-referred
Reason for usage:
Promote overall health
Duration of use:
Over 180 days
Share this Review:
Review 10 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
Great Buy on D3,December 5, 2008
By YellowIrisfrom Alabama
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"I'm a Breast Cancer survivor and must take large quantities of D3 because of my ongoing medidcations. This one packs the most into the least amount of pills that I've found.
Good value for the price also."
Age:
65-74
Gender:
Female
Daily supplement usage:
3-5 supplements daily
Referral source:
Other
Reason for usage:
Specific health concern
Duration of use:
Over 180 days
Share this Review:
Review 11 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Top 500 Contributor
Overall Rating:
4
out of 5
NSI VIT 'D3',August 16, 2008
By lindar
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
4
out of 5
Satisfaction:
5
out of 5
"I take one a day and I feel great but I think it is too soon to give all the credit to one product. I have studied vit D and it is very helpful."
Referral source:
Other
Reason for usage:
Promote overall health
Duration of use:
Less than 30 days
Share this Review:
Review 12 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Top 500 Contributor
Overall Rating:
5
out of 5
Vitamin D3,August 8, 2008
By Persephonefrom Southaven MS
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"Been reading recently on the fantastic benefits of vitamin D and that D3 is the best form. I take it in combination with Coral Calcium and Magnesium complex to get max benefits from these necessary nutrients. Like that this is a very small capsule so easy to swallow and like that as a capsule it is likely more readily absorbed."
Age:
55-64
Gender:
Female
Referral source:
Self-referred
Duration of use:
Less than 30 days
Share this Review:
Review 13 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
Excellent price and dosage,July 21, 2008
By Analystfrom Los Angeles, CA
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"The caps are small, easy to swallow, and at the 1,000 iu dosage, are safe to take. The price is great, too."
Gender:
Male
Daily supplement usage:
6+ supplements daily
Referral source:
Self-referred
Reason for usage:
Specific health concern
Duration of use:
30-60 days
Share this Review:
Review 14 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Top 1000 Contributor
Overall Rating:
5
out of 5
Good Product,July 21, 2008
By MommyofAmeleafrom Brooksville, FL
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"Easy to take, no unpleasant aftertaste. Nice to have for a little extra vitamin D."
Age:
25-34
Gender:
Female
Daily supplement usage:
3-5 supplements daily
Referral source:
Self-referred
Reason for usage:
Promote overall health
Duration of use:
30-60 days
Share this Review:
Review 15 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
Excellent Product,May 16, 2008
By Mikiefrom Roanoke, VA
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"Vitamin D deficiency has been big in the news recently. Because I have the start of osteoporosis, my GYN checked my Vitamin D level and it was very low. I went on 2,000 IU of this product for 4 months and my level is back to normal. Be sure to have your Vitamin D level checked before you take this product. If you are not deficient, you should not take extra D, as it has not been determined how safe an excess of D is. Also, make sure you take Vitamin D3 for deficiency."
Age:
45-54
Gender:
Female
Daily supplement usage:
6+ supplements daily
Referral source:
Self-referred
Reason for usage:
Specific health concern
Duration of use:
61-180 days
1 of 1 people found this review helpful.
Share this Review:
Review 16 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Top 1000 Contributor
Overall Rating:
5
out of 5
Seems to be working,May 16, 2008
By sapph
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
4
out of 5
Satisfaction:
5
out of 5
"I've been reading a lot about increasing your intake of Vitamin D so I thought I'd give it a try. I started with just one a day but have started taking 2, which I think is making a difference. I definitely notice that I'm happier and I also started exercising regularly, which I haven't done in a long time. I can't say that the D did it but the mood improvement may have foster the desire to exercise. Either way, I feel better."
Age:
35-44
Gender:
Female
Duration of use:
Over 180 days
2 of 2 people found this review helpful.
Share this Review:
Review 17 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
This is great,May 16, 2008
By kristymaycfrom New Hampshire
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"Vitamin D is needed in higher amounts than we onced realized. I feel better, as I know I'm definitely getting the RDA and more."
Age:
25-34
Gender:
Female
Daily supplement usage:
6+ supplements daily
Referral source:
Physician
Reason for usage:
Promote overall health
Duration of use:
61-180 days
Share this Review:
Review 18 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
great value,May 11, 2008
By millielufrom Oklahoma
Value:
5
out of 5
Quality:
4
out of 5
Effectiveness:
4
out of 5
Satisfaction:
5
out of 5
"Great to have this until the weather warms up and I am in the sun a little. Great value, great product and small and easy to take."
Age:
45-54
Daily supplement usage:
6+ supplements daily
Referral source:
Self-referred
Reason for usage:
Specific health concern
Duration of use:
Less than 30 days
Share this Review:
Review 19 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
So easy to take,March 11, 2008
By Janney
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"I've been hearing a lot about the benefits of Vit D in the news, so I decided to start taking. It's really not that expensive and capsule is easy to swallow."
Share this Review:
Review 20 for NSI Vitamin D3 (as Cholecalciferol) -- 1000 IU - 200 Capsules
Overall Rating:
5
out of 5
very good multi-vitamin,March 11, 2008
By Co57cyclistsfrom Westminster, Co
Value:
5
out of 5
Quality:
5
out of 5
Effectiveness:
5
out of 5
Satisfaction:
5
out of 5
"I have found this to be a very good mulit vatamin. I am a road cyclists and using this has improved my preformance. On century rides I found out I can improve my preformance by using these as a supplement at the 50 mile mark. In doing some comparisions with other sport supplements their contents are very similar or even the same."
Age:
55-64
Gender:
Male
Daily supplement usage:
3-5 supplements daily
Referral source:
Other
Reason for usage:
Enhanced performance
Duration of use:
Over 180 days
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