

Hero image 0 of Theralogix Thera-D 4000 Vitamin D Supplement - 4,000 IU (100 mcg) Vitamin D3 - 90-Day Supply - Immune Support Supplement for Women & Men - Aids Bone & Heart Health - NSF Certified - 90 Tablets, 0 of 7
Theralogix Thera-D 4000 Vitamin D Supplement - 4,000 IU (100 mcg) Vitamin D3 - 90-Day Supply - Immune Support Supplement for Women & Men - Aids Bone & Heart Health - NSF Certified - 90 Tablets
Theralogix Thera-D 4000 Vitamin D Supplement - 4,000 IU (100 mcg) Vitamin D3 - 90-Day Supply - Immune Support Supplement for Women & Men - Aids Bone & Heart Health - NSF Certified - 90 TabletsTheralogix Thera D 4000 Vitamin D Supplement 4 000 IU 100 mcg Vitamin D3 90 Day Supply Immune Support Supplement Women Men Aids Bone Heart Health NSFTheralogix Thera D 2000 Vitamin D Supplement 2 000 IU 50 mcg Vitamin D3 Tablets 180 Day Supply Immune Support Supplement Women Men Aids Bone Heart HeTheralogix Thera D 6000 Vitamin D Supplement 6 000 IU 150 mcg Vitamin D3 90 Day Supply Immune Support Supplement Women Men Aids Bone Heart Health NSF
Medicine Strength:4,000 iu Vitamin D-Out of stock
Key item features
- Support Bone & Heart Health: Numerous studies suggest optimal vitamin D levels aid heart and bone health, making Thera-D an ideal supplement*
- Biologically Active Vitamin D3: Our vitamin D tablets provide the same biologically active form of vitamin D created in our bodies after direct sunlight exposure, without the risk of UVB’s*
- Immune Support Supplement: Thera-D 4000 supports healthy immune function to help your body stay resilient with 4,000 IU (100 mcg) of vitamin D per tablet*
- Purity Tested: Our USA-manufactured supplements are independently verified for potency and purity by NSF; gluten-free, no dyes, vegetarian, and made with premium ingredients
- About Theralogix: Theralogix produces scientifically formulated nutritional supplements made from premium ingredients, independently tested & certified, and trusted by healthcare providers & patients for over 20 years
Specs
- Vitamin & supplement typeVitamin D Supplements
- Health concernImmune System Support
- Medicine strength4,000 iu Vitamin D
- Enteral medication formTablets
- BrandTheralogix
- Product usage frequencyDaily
Current price is USD$29.72
Price when purchased online
Selected option out of stock
More options available
How do you want your item?
Out of stock
About this item
Product details
Support your health using high-quality supplements like Theralogix Thera-D Vitamin D Supplement. Thera-D provides the same biologically active form of Vitamin D created in our bodies after direct sunlight exposure, without the risk of UVB's.* With numerous studies suggesting its significance, optimal vitamin D levels are crucial for supporting bone and heart health.* Additionally, this supplement can provide immune support.*
Thera-D can support normal vitamin D levels or aid slightly low levels.* It's an ideal choice for individuals looking to optimize their vitamin D intake and support their overall health.*
Our story is your story, and we share common values with you. In a world of endless choices, our goal is to provide you high-quality nutritional supplements that you can trust. Since Theralogix was established in 2002, there has been a growing awareness that nutritional supplements—taken along with a healthful diet and lifestyle—can play an important role in supporting your health. The Theralogix guiding principle is to make supplements for men and women that use high-quality ingredients to meet your individual needs. Theralogix supplements are trusted by more than 300,000 physicians and patients worldwide since 2002.
In a market where finding trustworthy supplements can be a challenge, Theralogix solves this unmet need. Theralogix is committed to following the science wherever it leads, and continues to provide supplements for men and women that are competitively priced and support your best health.
Thera-D can support normal vitamin D levels or aid slightly low levels.* It's an ideal choice for individuals looking to optimize their vitamin D intake and support their overall health.*
Our story is your story, and we share common values with you. In a world of endless choices, our goal is to provide you high-quality nutritional supplements that you can trust. Since Theralogix was established in 2002, there has been a growing awareness that nutritional supplements—taken along with a healthful diet and lifestyle—can play an important role in supporting your health. The Theralogix guiding principle is to make supplements for men and women that use high-quality ingredients to meet your individual needs. Theralogix supplements are trusted by more than 300,000 physicians and patients worldwide since 2002.
In a market where finding trustworthy supplements can be a challenge, Theralogix solves this unmet need. Theralogix is committed to following the science wherever it leads, and continues to provide supplements for men and women that are competitively priced and support your best health.
- Support Bone & Heart Health: Numerous studies suggest optimal vitamin D levels aid heart and bone health, making Thera-D an ideal supplement*
- Biologically Active Vitamin D3: Our vitamin D tablets provide the same biologically active form of vitamin D created in our bodies after direct sunlight exposure, without the risk of UVB’s*
- Immune Support Supplement: Thera-D 4000 supports healthy immune function to help your body stay resilient with 4,000 IU (100 mcg) of vitamin D per tablet*
- Purity Tested: Our USA-manufactured supplements are independently verified for potency and purity by NSF; gluten-free, no dyes, vegetarian, and made with premium ingredients
- About Theralogix: Theralogix produces scientifically formulated nutritional supplements made from premium ingredients, independently tested & certified, and trusted by healthcare providers & patients for over 20 years
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it. Â
Specifications
Brand
Theralogix
Enteral medication form
Tablets
Flavor
Unflavored
Count per pack
90
Indications
Stop Use Indications
* This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Health Concern
Immune System Support
Directions
Instructions
Take one tablet per day with food, or as directed by your healthcare provider.
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Ingredients
Ingredients
4,000 IU/100mcg Vitamin D3 (as cholecalciferol); Other Ingredients: microcrystalline cellulose, croscarmellose sodium, vegetable stearic acid, silicon dioxide, vegetable magnesium stearate, clear vegetable coating (hypromellose, glycerine).
Similar items you might like
Based on what customers bought
Carlson Laboratories Vitamin D 4000 IU 360 Softgel $30.60
2 optionsAvailable in additional 2 options$3060current price $30.60Carlson Laboratories Vitamin D 4000 IU 360 Softgel
1274.9 out of 5 Stars. 127 reviewsBest seller Nature Made Vitamin D3 1000 IU (25 Mcg) Tablets, Dietary Supplement for Bone and Immune Health Support, 210 Count $6.98 3.3 ¢/count
Best seller
$698current price $6.983.3 ¢/countNature Made Vitamin D3 1000 IU (25 Mcg) Tablets, Dietary Supplement for Bone and Immune Health Support, 210 Count
4764.7 out of 5 Stars. 476 reviews500+ bought since yesterday Nature Made Vitamin D3 K2, 5000 IU (125 Mcg) Vitamin D Softgels, Dietary Supplement, 60 Count $16.74 27.9 ¢/count
500+ bought since yesterday
$1674current price $16.7427.9 ¢/countNature Made Vitamin D3 K2, 5000 IU (125 Mcg) Vitamin D Softgels, Dietary Supplement, 60 Count
9404.7 out of 5 Stars. 940 reviewsBest seller Nutricost Vitamin K2 (100mcg) Vitamin D3 (5000 IU) 120 Softgels, Supplement $14.95 Was $19.95
Best seller
$1495current price $14.95, Was $19.95$19.95Nutricost Vitamin K2 (100mcg) Vitamin D3 (5000 IU) 120 Softgels, Supplement
3024.6 out of 5 Stars. 302 reviewsBest seller Nature Made Vitamin D3 K2 Gummies, Vitamin D for Bone, Muscle & Immune Support, 80 Count $16.74 20.9 ¢/count
Best seller
$1674current price $16.7420.9 ¢/countNature Made Vitamin D3 K2 Gummies, Vitamin D for Bone, Muscle & Immune Support, 80 Count
5234.6 out of 5 Stars. 523 reviews(2 Pack)GPGP Vitamin D3 5000 IU K2 (200mcg MK7) Supplement for Bone and Heart Health, Immune Support, 240 Softgels $23.99 Was $26.99
$2399current price $23.99, Was $26.99$26.99(2 Pack)GPGP Vitamin D3 5000 IU K2 (200mcg MK7) Supplement for Bone and Heart Health, Immune Support, 240 Softgels
174.9 out of 5 Stars. 17 reviewsRollback Spring Valley Vitamin D3 Softgels, 25 mcg (1000 IU), 100 Count, Supplement for Bone and Immune Health $3.94 Was $4.88 3.9 ¢/count
Rollback
$394current price $3.94, Was $4.88$4.883.9 ¢/countSpring Valley Vitamin D3 Softgels, 25 mcg (1000 IU), 100 Count, Supplement for Bone and Immune Health
31174.8 out of 5 Stars. 3117 reviewsBest seller Nature Made Vitamin D3 2000 IU (50 Mcg) per Serving Gummies, Dietary Supplement, 160 Count $9.98 6.2 ¢/count
Best seller
$998current price $9.986.2 ¢/countNature Made Vitamin D3 2000 IU (50 Mcg) per Serving Gummies, Dietary Supplement, 160 Count
2674.7 out of 5 Stars. 267 reviewsEarth's Splendor Vitamin D 2,000 IU - Immune Support & Strong Bones - 75 Count $9.99
$999current price $9.99Earth's Splendor Vitamin D 2,000 IU - Immune Support & Strong Bones - 75 Count
500+ bought since yesterday Nature Made Vitamin C 250 mg Per Serving Gummies, Dietary Supplement, 120 Count $8.52 7.1 ¢/count
500+ bought since yesterday
2 optionsAvailable in additional 2 options$852current price $8.527.1 ¢/countNature Made Vitamin C 250 mg Per Serving Gummies, Dietary Supplement, 120 Count
21764.8 out of 5 Stars. 2176 reviews2K+ bought since yesterday Nature Made Vitamin D3 2000 IU (50 mcg) Softgels, Vitamin D Supplement for Bone and Immune Health Support, 100 Count $6.98 7.0 ¢/count
2K+ bought since yesterday
2 optionsAvailable in additional 2 options$698current price $6.987.0 ¢/countNature Made Vitamin D3 2000 IU (50 mcg) Softgels, Vitamin D Supplement for Bone and Immune Health Support, 100 Count
79084.8 out of 5 Stars. 7908 reviewsBest seller Mommy's Bliss Vitamin D, Organic Drops, Newborn , 0.11 fl oz (3.24 ml) $13.48 $122.55/fl oz
Best seller
5 optionsAvailable in additional 5 options$1348current price $13.48$122.55/fl ozMommy's Bliss Vitamin D, Organic Drops, Newborn , 0.11 fl oz (3.24 ml)
7694.8 out of 5 Stars. 769 reviewsBest seller Spring Valley Ultra Strength Vitamin C, 2,000 mg, 120 Count, Dietary Supplement Capsules for Immune Health $7.94 6.6 ¢/count
Best seller
2 optionsAvailable in additional 2 options$794current price $7.946.6 ¢/countSpring Valley Ultra Strength Vitamin C, 2,000 mg, 120 Count, Dietary Supplement Capsules for Immune Health
17744.8 out of 5 Stars. 1774 reviewsVitamin E 1000IU 670MG Capsules(d-Alpha Tocopherol),Support Antioxidant & Immune,120 Ct $14.99
2 optionsAvailable in additional 2 options$1499current price $14.99Vitamin E 1000IU 670MG Capsules(d-Alpha Tocopherol),Support Antioxidant & Immune,120 Ct
3714.7 out of 5 Stars. 371 reviews1K+ bought since yesterday Nature Made Extra Strength Vitamin D3 5000 IU (125 mcg) Softgels, Dietary Supplement for Bone and Immune Health Support, 100 Count $7.94 7.9 ¢/count
1K+ bought since yesterday
$794current price $7.947.9 ¢/countNature Made Extra Strength Vitamin D3 5000 IU (125 mcg) Softgels, Dietary Supplement for Bone and Immune Health Support, 100 Count
42864.8 out of 5 Stars. 4286 reviews500+ bought since yesterday Spring Valley Vitamin K2 (90mcg) D3 (125mcg) Vegetarian Capsules, 90 Count $9.88 11.0 ¢/count
500+ bought since yesterday
2 optionsAvailable in additional 2 options$988current price $9.8811.0 ¢/countSpring Valley Vitamin K2 (90mcg) D3 (125mcg) Vegetarian Capsules, 90 Count
26284.7 out of 5 Stars. 2628 reviewsBest seller Nature Made Extra Strength Dosage Chewable Vitamin C 1000 mg per Serving Tablets, 120 Count $9.98 8.3 ¢/count
Best seller
$998current price $9.988.3 ¢/countNature Made Extra Strength Dosage Chewable Vitamin C 1000 mg per Serving Tablets, 120 Count
14594.7 out of 5 Stars. 1459 reviewsTHORNE - Vitamin D-5000 - Vitamin D3 Supplement - Support Healthy Bones, Teeth, Muscles, Cardiovascular, and Immune Function* - NSF Certified for Sport - Dairy-Free, Soy-Free - 60 Capsules $20.00
2 optionsAvailable in additional 2 options$2000current price $20.00THORNE - Vitamin D-5000 - Vitamin D3 Supplement - Support Healthy Bones, Teeth, Muscles, Cardiovascular, and Immune Function* - NSF Certified for Sport - Dairy-Free, Soy-Free - 60 Capsules
854.9 out of 5 Stars. 85 reviewsCarlson - Super Daily D3, 6,000 IU (150 mcg) per Drop, Vitamin D Drops, 1-Year Supply, Vegetarian, Unflavored, 365 Drops $21.23
$2123current price $21.23Carlson - Super Daily D3, 6,000 IU (150 mcg) per Drop, Vitamin D Drops, 1-Year Supply, Vegetarian, Unflavored, 365 Drops
954.9 out of 5 Stars. 95 reviewsVitamin D3 (Cholecalciferol), 15 mcg (600 IU), 120 Vegetable Capsules, Solgar $15.78
$1578current price $15.78Vitamin D3 (Cholecalciferol), 15 mcg (600 IU), 120 Vegetable Capsules, Solgar
214.7 out of 5 Stars. 21 reviews
Check out these related products
Theralogix TheraCal D2000 - Bone Health Support Supplement with Calcium, Magnesium, Vitamin D3, Vitamin K2 & Boron* - 90-Day Supply - NSF Certified - 360 Tablets $64.39
$6439current price $64.39Theralogix TheraCal D2000 - Bone Health Support Supplement with Calcium, Magnesium, Vitamin D3, Vitamin K2 & Boron* - 90-Day Supply - NSF Certified - 360 Tablets
24.5 out of 5 Stars. 2 reviewsTheralogix NeoQ10 Coenzyme Q10 Supplement - Heart Health & Fertility Support - CoQ10 Fertility Supplement for Men & Women* - NSF Certified - 90 Softgels (90-Day Supply) $79.25
$7925current price $79.25Theralogix NeoQ10 Coenzyme Q10 Supplement - Heart Health & Fertility Support - CoQ10 Fertility Supplement for Men & Women* - NSF Certified - 90 Softgels (90-Day Supply)
314.6 out of 5 Stars. 31 reviewsTheralogix Companion Multivitamin & Mineral Supplement - 90-Day Supply - Supplement for Women & Men Without Iron, Vitamin D, or Vitamin K - B Vitamins, Zinc & Magnesium - NSF Certified - 90 Tablets $18.57
$1857current price $18.57Theralogix Companion Multivitamin & Mineral Supplement - 90-Day Supply - Supplement for Women & Men Without Iron, Vitamin D, or Vitamin K - B Vitamins, Zinc & Magnesium - NSF Certified - 90 Tablets
114.2 out of 5 Stars. 11 reviewsTheralogix TheraNatal Core Preconception Vitamin Supplement - 90-Day Supply - Fertility Support Supplement with Folate, Vitamin D3, Choline & More* - NSF Certified - 90 Tablets $38.82
$3882current price $38.82Theralogix TheraNatal Core Preconception Vitamin Supplement - 90-Day Supply - Fertility Support Supplement with Folate, Vitamin D3, Choline & More* - NSF Certified - 90 Tablets
634.4 out of 5 Stars. 63 reviewsNature’s Bounty Vitamin B12 Quick Dissolve Tablets, 2500 mcg, Cherry Flavor, 75 Count $9.50 Was $10.92 12.7 ¢/count
$950current price $9.50, Was $10.92$10.9212.7 ¢/countNature’s Bounty Vitamin B12 Quick Dissolve Tablets, 2500 mcg, Cherry Flavor, 75 Count
2674.7 out of 5 Stars. 267 reviewsTheralogix ProCerv HP High-Potency Multivitamin - 90-Day Supply - Support for Women & Men - Immune Support Supplement* - includes B Vitamins, Vitamin C, Vitamin D & Zinc - NSF Certified - 270 Capsules $136.22
$13622current price $136.22Theralogix ProCerv HP High-Potency Multivitamin - 90-Day Supply - Support for Women & Men - Immune Support Supplement* - includes B Vitamins, Vitamin C, Vitamin D & Zinc - NSF Certified - 270 Capsules
15 out of 5 Stars. 1 reviewsNature's Bounty Vitamin C Immune Support Tablets, 500 Mg, 250 Ct $16.29 6.5 ¢/ea
$1629current price $16.296.5 ¢/eaNature's Bounty Vitamin C Immune Support Tablets, 500 Mg, 250 Ct
1544.7 out of 5 Stars. 154 reviewsCountBoost for Men - Male Fertility Supplement to Support Count - with Ashwagandha, Maca, Glutathione, B Vitamins - FertilAid for Men Companion Product (60 Capsules / 1 Month Supply) $25.99
$2599current price $25.99CountBoost for Men - Male Fertility Supplement to Support Count - with Ashwagandha, Maca, Glutathione, B Vitamins - FertilAid for Men Companion Product (60 Capsules / 1 Month Supply)
45 out of 5 Stars. 4 reviews1000mg L-Carnitine Supplement 200 Capsules Boost Metabolism, Increase Energy & Performance - L Carnitine Supplement For Cardiovascular Health & Muscle Recovery $20.99
$2099current price $20.991000mg L-Carnitine Supplement 200 Capsules Boost Metabolism, Increase Energy & Performance - L Carnitine Supplement For Cardiovascular Health & Muscle Recovery
594.5 out of 5 Stars. 59 reviewsTheralogix Prostate 2.4 Nutritional Supplement - 90-Day Supply - Prostate Health for Men - Supports Healthy Prostate Tissue - Lycopene, Vitamin D3, Selenium & Vitamin E - NSF Certified - 180 Capsules $122.60
$12260current price $122.60Theralogix Prostate 2.4 Nutritional Supplement - 90-Day Supply - Prostate Health for Men - Supports Healthy Prostate Tissue - Lycopene, Vitamin D3, Selenium & Vitamin E - NSF Certified - 180 Capsules
35 out of 5 Stars. 3 reviewsMyo D-Chiro Inositol, 120 Capsules, Fairhaven Health $24.99
$2499current price $24.99Myo D-Chiro Inositol, 120 Capsules, Fairhaven Health
194.9 out of 5 Stars. 19 reviews
Customer ratings & reviews
How item rating is calculated
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |
Showing 1-3 of 13 reviews
Sep 16, 2025
Walmart customer
Item details
Sold byTheralogixDelivered byWalmartMedicine strength: 6,000 iu Vitamin D
5 out of 5 stars review
Verified Purchase
good choice.
My doctor recommended this dosage, and I am anxious to see its effects. Glad to be able to get this dosage.
Incentivized Review
Helpful?27PONSRJIXGW1281094274
Feb 17, 2026
Jennifer
Item details
Sold byTheralogixDelivered byWalmartMedicine strength: 2,000 iu Vitamin D
5 out of 5 stars review
Verified Purchase
Recommended by Dr., easy to swallow.
Incentivized Review
Helpful?27PONSRJIXGW1281094274
Dec 16, 2024
Jane
Item details
Sold byTheralogixDelivered byWalmartMedicine strength: 2,000 iu Vitamin D
5 out of 5 stars review
Verified Purchase
Was recommended to me to take by a doctor. Easy to swallow
Helpful?27PONSRJIXGW1281094274
