Vitamin D3
Vitamin D3 is cholecalciferol, the storage form of vitamin D. The pharmacy dispenses it as a 1,000 IU capsule, 90 per supply. It is prescribed when your labs show a level below your provider's target, and the level is rechecked at follow-up.
Pharmacy shipping: $20 added once per medication order.
About this treatment
Support bone health by meeting your vitamin D needs.
Vitamin D3 helps your body absorb calcium and maintain normal bone mineralization. When intake or vitamin D status is inadequate, supplementation can help address that gap. Your health history, existing supplements and any clinically relevant lab result guide the plan.
Help the body use calcium
Vitamin D3, or cholecalciferol, is one form of vitamin D. The body converts it first to 25-hydroxyvitamin D and then to an active form. This system helps absorb calcium and maintain the calcium and phosphate balance needed for healthy bones. Severe deficiency can lead to osteomalacia, a softening of bones in adults.
Match supplementation to a real need
Diet, limited sun exposure, absorption problems and some medical conditions can affect vitamin D status. The commonly used blood test measures 25-hydroxyvitamin D. Your clinician interprets a result in context, including bone health and other risk factors. In adults who already have adequate vitamin D, taking extra has not consistently improved fracture outcomes in clinical trials.
Count all sources before adding another
Bring the labels of multivitamins, calcium products and other supplements, since several may contain vitamin D. Kidney disease, high calcium and some medicines affect how supplementation should be managed. Confirm the selected preparation with the pharmacy. Avoid increasing the amount on your own, and report persistent nausea, marked thirst or frequent urination.
Research and product information
Correcting inadequate vitamin D is different from adding more when levels are already sufficient. A large trial in generally healthy adults not selected for deficiency found no fracture reduction with supplementation. Excess vitamin D can raise calcium and harm the kidneys; routine testing is not recommended for every healthy adult.
- NIH Office of Dietary Supplements: vitamin D functions, assessment and safety
- LeBoff et al. Supplemental vitamin D and fractures in generally healthy adults: VITAL trial (2022)
- NIH MedlinePlus: cholecalciferol preparations, interactions and precautions
Sources checked .
Your path to Vitamin D3
Complete the assessment
Share your recent labs and health history in the patient portal.
Provider review
A licensed provider sets the amount based on your vitamin D level.
Care coordination
Your care team coordinates the prescription after provider approval.
About this treatment
What it is
Cholecalciferol, the D3 form of vitamin D, dispensed as a capsule. Your provider sets the amount from your blood level.
Who it's for
Adults whose labs show a vitamin D level below their provider's target. Your provider decides whether to prescribe and rechecks the level.
Forms we dispense
Capsule 1,000 IU
A licensed provider reviews your history and requests labs when clinically appropriate before prescribing.
Prescriptions are coordinated with our licensed US pharmacy partner, with dosing supplies included when needed.
We do not sell pharmaceuticals online. Every prescription comes after a full provider review.
