calcium/vitamin D (OTC)

Calcium Supplementation

Daily dietary reference intake

• Calcium/vitamin D
• 19-50 years: 1000 mg/600 IU daily
• ≥51-70 years (males): 1000 mg/600 IU
• ≥51 years (females): 1200 mg/600 IU
• ≥70 years (males): 1200 mg/800 IU
• Pregnancy/lactating: 1000mg/600IU
• Osteoporosis prevention in adults ≥50 years: Vitamin D intake may need to be increased to 800-1000 mg

Dietary supplement

• 1-2 tablets/caplets PO BID with or without food (food may increase absorption); consult product informaiton also

Dosing Considerations

Elemental calcium equivalent by weight

• Calcium carbonate is 40% elemental calcium
• Calcium citrate is 21% elemental calcium

High risk for vitamin D deficiency

• Age ≥50 years
• Dark pigmented skin
• Limited sun exposure
• Consistently wearing sunscreen

Administration

Tablet strengths are varied; check content of calcium and vitamin D carefully to assure dosage

Take with food

Data on calcium supplementation in childrem not conclusive

Contraindicated (0)

Serious - Use Alternative (1)

• baloxavir marboxil

  calcium/vitamin D will decrease the level or effect of baloxavir marboxil by cation binding in GI tract. Avoid or Use Alternate Drug. Baloxavir may bind to polyvalent cations resulting in decreased absorption. Studies in monkeys showed concurrent use with calcium, aluminum, or iron caused significantly decreased plasma levels. Human studies not conducted.

Monitor Closely (9)

• cabotegravir

  calcium/vitamin D will decrease the level or effect of cabotegravir by cation binding in GI tract. Modify Therapy/Monitor Closely. Administer polyvalent cation products at least 2 hr before or 4 hr after taking oral cabotegravir.

• deferiprone

  calcium/vitamin D decreases levels of deferiprone by enhancing GI absorption. Applies only to oral form of both agents. Modify Therapy/Monitor Closely. Deferiprone may bind polyvalent cations (eg, iron, aluminum, and zinc), separate administration by at least 4 hr between deferiprone and other medications (eg, antacids), or supplements containing these polyvalent cations.

• delafloxacin

  calcium/vitamin D will decrease the level or effect of delafloxacin by cation binding in GI tract. Modify Therapy/Monitor Closely. Oral delafloxacin form chelates with alkaline earth and transition metal cations. Administer oral delafloxacin at least 2 hr before or 6 hr after these agents.

• omadacycline

  calcium/vitamin D will decrease the level or effect of omadacycline by inhibition of GI absorption. Applies only to oral form of both agents. Modify Therapy/Monitor Closely. Multivalent cation-containing products may impair absorption of tetracyclines, which may decrease its efficacy. Separate dosing of tetracyclines from these products.

• rifampin

  calcium/vitamin D will decrease the level or effect of rifampin by Other (see comment). Use Caution/Monitor. Concomitant antacid administration may reduce absorption of rifampin; daily doses of rifampin should be given at least 1 hr before ingestion of antacids

• rilpivirine

  calcium/vitamin D decreases levels of rilpivirine by increasing gastric pH. Applies only to oral form of both agents. Modify Therapy/Monitor Closely. Coadministration of antacids with rilpivirine may cause significant decreases in rilpivirine plasma concentrations because of increased gastric pH. If antacids must be administered, they should given at least 2 hr before or at least 4 hr after rilpivirine.

• sarecycline

  calcium/vitamin D will decrease the level or effect of sarecycline by inhibition of GI absorption. Applies only to oral form of both agents. Modify Therapy/Monitor Closely. Multivalent cation-containing products may impair absorption of tetracyclines, which may decrease its efficacy. Separate dosing of tetracyclines from these products.

• sodium sulfate/?magnesium sulfate/potassium chloride

  sodium sulfate/?magnesium sulfate/potassium chloride increases toxicity of calcium/vitamin D by Other (see comment). Use Caution/Monitor. Comment: Coadministration with medications that cause fluid and electrolyte abnormalities may increase the risk of adverse events of seizure, arrhythmias, and renal impairment.

• sodium sulfate/potassium sulfate/magnesium sulfate

  sodium sulfate/potassium sulfate/magnesium sulfate increases toxicity of calcium/vitamin D by Other (see comment). Use Caution/Monitor. Comment: Coadministration with medications that cause fluid and electrolyte abnormalities may increase the risk of adverse events of seizure, arrhythmias, and renal impairment.

Minor (0)

• baloxavir marboxil

  Serious - Use Alternative (1)calcium/vitamin D will decrease the level or effect of baloxavir marboxil by cation binding in GI tract. Avoid or Use Alternate Drug. Baloxavir may bind to polyvalent cations resulting in decreased absorption. Studies in monkeys showed concurrent use with calcium, aluminum, or iron caused significantly decreased plasma levels. Human studies not conducted.

• cabotegravir

  Monitor Closely (1)calcium/vitamin D will decrease the level or effect of cabotegravir by cation binding in GI tract. Modify Therapy/Monitor Closely. Administer polyvalent cation products at least 2 hr before or 4 hr after taking oral cabotegravir.

• deferiprone

  Monitor Closely (1)calcium/vitamin D decreases levels of deferiprone by enhancing GI absorption. Applies only to oral form of both agents. Modify Therapy/Monitor Closely. Deferiprone may bind polyvalent cations (eg, iron, aluminum, and zinc), separate administration by at least 4 hr between deferiprone and other medications (eg, antacids), or supplements containing these polyvalent cations.

• delafloxacin

  Monitor Closely (1)calcium/vitamin D will decrease the level or effect of delafloxacin by cation binding in GI tract. Modify Therapy/Monitor Closely. Oral delafloxacin form chelates with alkaline earth and transition metal cations. Administer oral delafloxacin at least 2 hr before or 6 hr after these agents.

• omadacycline

  Monitor Closely (1)calcium/vitamin D will decrease the level or effect of omadacycline by inhibition of GI absorption. Applies only to oral form of both agents. Modify Therapy/Monitor Closely. Multivalent cation-containing products may impair absorption of tetracyclines, which may decrease its efficacy. Separate dosing of tetracyclines from these products.

• rifampin

  Monitor Closely (1)calcium/vitamin D will decrease the level or effect of rifampin by Other (see comment). Use Caution/Monitor. Concomitant antacid administration may reduce absorption of rifampin; daily doses of rifampin should be given at least 1 hr before ingestion of antacids

• rilpivirine

  Monitor Closely (1)calcium/vitamin D decreases levels of rilpivirine by increasing gastric pH. Applies only to oral form of both agents. Modify Therapy/Monitor Closely. Coadministration of antacids with rilpivirine may cause significant decreases in rilpivirine plasma concentrations because of increased gastric pH. If antacids must be administered, they should given at least 2 hr before or at least 4 hr after rilpivirine.

• sarecycline

  Monitor Closely (1)calcium/vitamin D will decrease the level or effect of sarecycline by inhibition of GI absorption. Applies only to oral form of both agents. Modify Therapy/Monitor Closely. Multivalent cation-containing products may impair absorption of tetracyclines, which may decrease its efficacy. Separate dosing of tetracyclines from these products.

• sodium sulfate/?magnesium sulfate/potassium chloride

  Monitor Closely (1)sodium sulfate/?magnesium sulfate/potassium chloride increases toxicity of calcium/vitamin D by Other (see comment). Use Caution/Monitor. Comment: Coadministration with medications that cause fluid and electrolyte abnormalities may increase the risk of adverse events of seizure, arrhythmias, and renal impairment.

• sodium sulfate/potassium sulfate/magnesium sulfate

  Monitor Closely (1)sodium sulfate/potassium sulfate/magnesium sulfate increases toxicity of calcium/vitamin D by Other (see comment). Use Caution/Monitor. Comment: Coadministration with medications that cause fluid and electrolyte abnormalities may increase the risk of adverse events of seizure, arrhythmias, and renal impairment.