Get DECARA® Vitamin D3 Delivered
High-dosage pharmaceutical grade vitamin D3
- #1 Branded Vitamin D3 in USA
- FDA-approved - prescription required
- Fast & free home delivery
- Kosher and Gluten Free
A Better Vitamin D Supplement
DECARA is a high-dosage, pharmaceutical grade vitamin D3 supplement, available as a 25,000 IU vegicap, 50,000 IU softgel, or 50,000 IU softgel with 200mcg vitamin K2.
How to Get DECARA
Transfer Prescription
Transferring your prescription to Marley Drug is easy. Fill out a simple form, and we will take it from there. All orders are confirmed with a phone call before shipping.
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Shop Online
Order DECARA on our site. During checkout you're given a choice for the prescription delivery. You can ask your physician to send the prescription to Marley Drug, or we can contact them on your behalf. Either way we do our best to make the process easy for you.
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Am I getting enough vitamin D?
Vitamin D helps our body absorb calcium, one of the main building block of our bones. As a result, having enough vitamin D is important for our bone health and overall health.
Where does Vitamin D come from?
Vitamin D is made by our bodies (through sunlight exposure) as well as found in the food we eat. It can also be found in multivitamins and supplements.
The two forms of vitamin D in supplements are vitamin D2 (ergocalciferol) and D3 (cholecalciferol). Both forms increase vitamin D in our blood, but vitamin D3 might raise it higher and for longer than D2.
Because vitamin D is fat soluble, its best to take your supplement with a meal or snack that includes some fat.
Measuring Vitamin D levels
To determine if you have enough vitamin D, your healthcare provider will want you to do a blood test to look at the levels of 25(OH)D.
Why 25(OH)D? Vitamin D is processed into 25-hydroxyvitamin D [25(OH)D], also known as calcidiol. This is later converts again by another enzyme in our kidney 1,25(OH)2D—also known as calcitriol, which is the active hormone. Calcitriol, or 1,25(OH)2D levels typically only decrease when vitamin D deficiency is severe, which is why 25(OH)D is a better indicator of vitamin D levels.
Vitamin D Levels and Health
Optimal concentations of 25(OH)D for bone and general health have not been well establish because they can vary by stage in life, by race and ethnicity, and many other factors.
| nmol/L* | ng/mL* | Health status |
|---|---|---|
| <30 | <12 | Associated with vitamin D deficiency, which can lead to rickets in infants and children and osteomalacia in adults |
| 30 to <50 | 12 to <20 | Generally considered inadequate for bone and overall health in healthy individuals |
| ≥50 | ≥20 | Generally considered adequate for bone and overall health in healthy individuals |
| >125 | >50 | Linked to potential adverse effects, particularly at >150 nmol/L (>60 ng/mL) |