What it's used for
Calcitriol oral solution is used to manage secondary hyperparathyroidism. It also helps treat resultant metabolic bone disease in predialysis patients with chronic renal failure.
Source: U.S. FDA-approved prescribing information (openFDA).
Typical dosing
The optimal daily dose of calcitriol oral solution must be carefully determined for each individual patient.
Dosing shown here is the general FDA-labeled range. Your prescribing clinician determines the exact dose, form, and schedule for you — this is not a substitute for medical advice.
Boxed warning / key safety info
Overdosage of vitamin D and its metabolites is dangerous and can cause progressive, severe hypercalcemia requiring emergency attention.
Common side effects
Adverse effects are generally similar to those of excessive vitamin D intake, resulting in hypercalcemia syndrome or calcium intoxication.
Covered strengths on the Tab $0 list
Covered at $0 with an active Tab membership when filled at a participating pharmacy nationwide or through mail order. A licensed clinician must prescribe the medication.
Related medications
Other everything else medications covered at $0 with an active Tab membership.
Calcitriol cost without insurance
Cash prices for Calcitriol without insurance vary widely by pharmacy, strength and quantity — the same prescription can cost very different amounts at two pharmacies in the same town. That is the problem a membership solves.
Calcitriol is on Tab's covered $0 generic list. With an active Tab membership, every covered strength is $0 — not a percentage off, not a coupon that changes month to month — at participating pharmacies nationwide or through mail order. You do not need insurance, and Tab works whether or not you have a health plan.
Tab is a membership, not insurance. Covered medications require a prescription from a licensed clinician.
Calcitriol dosage and administration
The optimal daily dose of Calcitriol Oral Solution must be carefully determined for each patient. Calcitriol Oral Solution can be administered as an oral solution (1 mcg/mL). Calcitriol Oral Solution therapy should always be started at the lowest possible dose and should not be increased without careful monitoring of serum calcium. The effectiveness of Calcitriol Oral Solution therapy is predicated on the assumption that each patient is receiving an adequate but not excessive daily intake of calcium. Patients are advised to have a dietary intake of calcium at a minimum of 600 mg daily. The U.S. RDA for calcium in adults is 800 mg to 1200 mg. To ensure that each patient receives an adequate daily intake of calcium, the physician should either prescribe a calcium supplement or instruct the patient in proper dietary measures.
Excerpt from the FDA-approved prescribing information (openFDA), retrieved 2026-09-15. Your prescribing clinician decides the exact dose, form and schedule for you — this is not medical advice.
Calcitriol side effects
Since Calcitriol Oral Solution is believed to be the active hormone which exerts vitamin D activity in the body, adverse effects are, in general, similar to those encountered with excessive vitamin D intake, ie, hypercalcemia syndrome or calcium intoxication (depending on the severity and duration of hypercalcemia) (see WARNINGS ). Because of the short biological half-life of calcitriol, pharmacokinetic investigations have shown normalization of elevated serum calcium within a few days of treatment withdrawal, ie, much faster than in treatment with vitamin D 3 preparations.
Excerpt from the FDA-approved prescribing information (openFDA), retrieved 2026-09-15. This is not a complete list. Report side effects to your clinician, and seek care for anything severe or unexpected.
Who should not take calcitriol
Calcitriol Oral Solution should not be given to patients with hypercalcemia or evidence of vitamin D toxicity. Use of Calcitriol Oral Solution in patients with known hypersensitivity to Calcitriol Oral Solution (or drugs of the same class) or any of the inactive ingredients is contraindicated.
Excerpt from the FDA-approved prescribing information (openFDA), retrieved 2026-09-15. Whether this medication is appropriate for you is a clinical decision made by your prescribing clinician.
Common questions
Is calcitriol covered at $0 with Tab?
Yes. Calcitriol is on Tab's covered $0 generic list — every covered strength is $0 with an active membership, at participating pharmacies nationwide or by mail order.
Do I need insurance to get calcitriol through Tab?
No. Tab is a membership, not insurance. Covered medications are $0 with an active membership whether or not you have a health plan.
How do I get a calcitriol prescription with Tab?
Book a video visit with a licensed Tab clinician (unlimited visits are included with membership). If it's clinically appropriate, they send the prescription to your chosen participating pharmacy or by mail order.
How much does calcitriol cost without insurance?
Without insurance, retail cash prices for calcitriol vary by pharmacy, strength and quantity. Calcitriol is on Tab's covered $0 generic list, so every covered strength is $0 with an active Tab membership at participating pharmacies nationwide or by mail order.
What is the cheapest way to get calcitriol?
For medications on Tab's covered list, a Tab membership is the cheapest route: covered strengths of calcitriol are $0 with an active membership, and unlimited video visits with a licensed clinician are included, so the visit that produces the prescription is covered too.
What is the usual dose of calcitriol?
The optimal daily dose of Calcitriol Oral Solution must be carefully determined for each patient. Calcitriol Oral Solution can be administered as an oral solution (1 mcg/mL). Calcitriol Oral Solution therapy should always be started at the lowest possible dose and should not be increased without careful monitoring of serum calcium. (FDA-approved label, retrieved 2026-09-15. Your clinician sets your dose.)
What are the side effects of calcitriol?
Since Calcitriol Oral Solution is believed to be the active hormone which exerts vitamin D activity in the body, adverse effects are, in general, similar to those encountered with excessive vitamin D intake, ie, hypercalcemia syndrome or calcium intoxication (depending on the severity and duration of hypercalcemia) (see WARNINGS ). (FDA-approved label, retrieved 2026-09-15.)
Calcitriol is $0 on the covered list
Members pay $0 for covered generics at participating pharmacies nationwide or by mail order — plus unlimited virtual primary care, urgent care and dermatology visits. No insurance needed.
Solo $49/mo · Family $119/mo for up to 4 people · Family+ $149/mo for up to 8
Start your membership → Compare plansTab is a membership and prescription-discount program, not insurance. A licensed clinician must prescribe any medication. Cancel anytime — no renewal.