--- product_id: 259735449 title: "Doctors Best Best D3 5000Iu, 360 CT" brand: "doctor's best" price: "SAR 141" currency: SAR in_stock: true reviews_count: 9 category: "Doctor's Best" url: https://www.desertcart.com.sa/products/259735449-doctors-best-best-d3-5000iu-360-ct store_origin: SA region: Saudi Arabia --- # 5000 IU high-potency dose Supports bone density & calcium absorption Enhances cardiovascular & immune health Doctors Best Best D3 5000Iu, 360 CT **Brand:** doctor's best **Price:** SAR 141 **Availability:** ✅ In Stock ## Summary > ☀️ Unlock your daily sunshine boost with Doctor’s Best D3! ## Quick Answers - **What is this?** Doctors Best Best D3 5000Iu, 360 CT by doctor's best - **How much does it cost?** SAR 141 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/259735449-doctors-best-best-d3-5000iu-360-ct) ## Best For - doctor's best enthusiasts ## Why This Product - Trusted doctor's best brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Heart Health Ally:** Supports cardiac function and healthy heart rhythm - • **Bone & Calcium Champion:** Optimizes calcium metabolism for strong bones and teeth - • **Immune System Regulator:** Modulates immune cells to maintain balanced defense - • **Gluten & Soy Free Formula:** Clean, allergen-conscious supplement for mindful wellness - • **Power-Packed 5000 IU Softgels:** Ideal daily dose to overcome widespread deficiency ## Overview Doctor's Best Vitamin D3 5000 IU delivers a potent, daily dose of the essential 'sunshine vitamin' in easy-to-swallow softgels. Designed to support bone density, optimize calcium absorption, regulate immune function, and promote cardiovascular health, this gluten- and soy-free formula addresses the vitamin D deficiency affecting 75% of Americans. With 360 softgels per bottle, it’s a convenient, long-lasting solution for proactive wellness. ## Description Vitamin d from dietary intake or sun exposure requires two activation steps in the body. The first activation occurs in the liver, while the second activation occurs in the kidneys, allowing for regulation of calcium metabolism. However, vitamin d receptors are present throughout the body, in tissue such as the skin, cartilage, heart, prostate, bones and intestines. Thus, the second activation step also takes place in local tissues. Recent discoveries have highlighted the important modulatory effects of vitamin d on various cells of the immune system.vitamin d enhances and regulates immune function. It is known that various cells of the immune system, such as t lymphocytes and antigen presenting cells, express the vitamin d receptor on their surface when activated. Recently, it has been found that treatment of these immune cells with vitamin d influences their expression of cytokines, which are chemical messengers of the immune system. The immune modulating effects of vitamin d extend to monocytes and dendritic cells of the immune system as well. Dendritic cells are important antigen-processing cells of the immune system that function to initiate the immune response. Vitamin d may prevent overactivity of the immune response and keep the immune system in a normal healthy state of vigilance.vitamin d supports optimal cardiovascular function. Research has uncovered the role vitamin d plays in supporting cardiac function. Heart myocytes (cells) express the vitamin d receptor, as do smooth muscle cells of blood vessels. The benefits of vitamin d on the heart are potentially far-reaching. Studies on mice heart cells have shown that vitamin d administration impacts their growth and proliferation. In these cells, vitamin d inhibited the release of a protein that could be detrimental to the function of these cells, displaying cardioprotective properties. It has also been shown that vitamin d has a modulatory effect on heart rhythm. Review: Very good - Ideal dose of 5000 international units. Very small soft gels. Review: Doctor's Best Vitamin D3 5000IU - Best Vitamin D3 ## Features - VITAMIN D “SUNSHINE VITAMIN†- supports healthy bone density and structure; Vitamin D is required for optimal calcium absorption - BENEFITS OF VITAMIN D3 - enhances and regulates immune function, supports optimal cardiovascular function and enhances cellular function - GET YOUR NEEDED DAILY DOSE - Approximately 75% of Americans are deficient in vitamin D. Some researchers suggest that a minimum daily intake of 1,000 IU is necessary to maintain barely adequate blood levels of vitamin D. Others agree that much higher doses are needed to ensure levels are optimal enough to promote health. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0050MYHBQ | | Age Range Description | Adult | | Allergen Information | Gluten Free, Soy Free | | Best Sellers Rank | #8,737 in Health ( See Top 100 in Health ) #79 in Vitamin D Supplements | | Brand | Doctor's Best | | Brand Name | Doctor's Best | | Color | Brown | | Container Type | Bottle | | Customer Reviews | 4.8 out of 5 stars 17,880 Reviews | | Diet Type | Gluten Free | | Diet type | Gluten Free | | Dosage Form | Softgel | | Flavor | Unflavored | | Flavour | Unflavored | | Global Trade Identification Number | 00753950002500 | | Item Dimensions | 5.6 x 5.6 x 10.8 centimeters | | Item Form | Softgel | | Item Weight | 0.24 Pounds | | Item form | Softgel | | Manufacturer | DOCTORS BEST | | Manufacturer Part Number | DRB-00250 | | Model Name | Vitamin D3 5000IU | | Model Number | DRB-00250 | | Number of Items | 1 | | Primary Supplement Type | Vitamin D3 | | Primary supplement type | Vitamin D3 | | Product Benefits | bone_health_support, energy_management | | Product benefits | bone_health_support, energy_management | | Special Ingredients | Gluten Free | | Specific Uses For Product | Heart, Helps regulate calcium and phosphorus levels needed for healthy bones and teeth*, Supports Immune Health | | UPC | 632687759690 753950002500 | | Unit Count | 360 Count | ## Product Details - **Brand:** Doctor's Best - **Diet type:** Gluten Free - **Flavour:** Unflavored - **Item form:** Softgel - **Primary supplement type:** Vitamin D3 ## Images ![Doctors Best Best D3 5000Iu, 360 CT - Image 1](https://m.media-amazon.com/images/I/61DadRYjVRL.jpg) ![Doctors Best Best D3 5000Iu, 360 CT - Image 2](https://m.media-amazon.com/images/I/71DEQ71DiEL.jpg) ![Doctors Best Best D3 5000Iu, 360 CT - Image 3](https://m.media-amazon.com/images/I/7133XSKWs2L.jpg) ![Doctors Best Best D3 5000Iu, 360 CT - Image 4](https://m.media-amazon.com/images/I/71f9x77qicL.jpg) ![Doctors Best Best D3 5000Iu, 360 CT - Image 5](https://m.media-amazon.com/images/I/71GQ40QrDkL.jpg) ## Questions & Answers **Q: What does vitamin D3 do?** A: Cholecalciferol, known as vitamin D3, plays a key role in supporting a healthy immune system, heart function, and maintaining strong bones.* **Q: How does vitamin D3 support bones?** A: Vitamin D3 helps the body maintain normal calcium and phosphorus levels, which supports overall bone health as part of a balanced lifestyle.* **Q: Is 5,000 IU safe daily?** A: This is a higher-strength dose. Many adults take it daily under healthcare guidance, but talk with a healthcare professional to determine what amount is right for your needs. **Q: How often to take it?** A: Adults are typically advised to take 1 softgel daily with food, or follow the instructions of a healthcare provider. **Q: Should I take with food?** A: Yes, it's recommended to take vitamin D3 with a meal containing fat, as this can help support absorption.* ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very good *by A***Y on 8 December 2022* Ideal dose of 5000 international units. Very small soft gels. ### ⭐⭐⭐⭐⭐ Doctor's Best Vitamin D3 5000IU *by A***R on 17 June 2022* Best Vitamin D3 ### ⭐⭐⭐⭐⭐ 👍 *by A***I on 9 February 2026* 👍 ## Frequently Bought Together - Doctor's Best Vitamin D3 5,000 IU for Healthy Bones, Teeth, Heart and Immune Support, Non-GMO, Gluten-Free, Soy Free, 360 Count (Pack of 1) - Doctor's Best High Absorption Magnesium Glycinate Lysinate, 100% Chelated, Non-GMO, Vegan, Gluten & Soy Free, 200 mg, 240 Count - Doctor's Best Natural Vitamin K2 Mk-7 with MenaQ7, 100mcg Vitamin K2 Supplement Supports Bone Health, Non-GMO, 60 Veggie Capsules --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.sa/products/259735449-doctors-best-best-d3-5000iu-360-ct](https://www.desertcart.com.sa/products/259735449-doctors-best-best-d3-5000iu-360-ct) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-06-17*