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Dihydrotachysterol Pregnancy and Breastfeeding Warnings

Dihydrotachysterol is also known as: DHT, DHT Intensol, Hytakerol

Dihydrotachysterol Pregnancy Warnings

Supplementation of vitamin D during the third trimester with vitamin D2 or vitamin D3 has been studied. Dosages of 1000 Intl units per day given daily during the third trimester did not result in any adverse fetal outcome. Neonatal calcium homeostasis was affected, resulting in significantly higher concentrations of calcium, 25-OH vitamin D3, and 1,25-(OH)2 vitamin D3.

Earlier literature expressed concerns over the development of supravalvular aortic stenosis, craniofacial abnormalities, and dental abnormalities in infants and children with idiopathic hypercalcemia. Whether or not prenatal factors predisposed these children to the development of hypercalcemia is not known.

Fifteen hypoparathyroid women receiving 50,000 to 250,000 Intl units of vitamin D2 experienced 27 uneventful births. No cardiovascular or craniofacial abnormalities were reported.

Dihydrotachysterol (vitamin D3) has been assigned to pregnancy category C. There are no controlled data in human pregnancy. Dihydrotachysterol should only be used during pregnancy when benefit outweighs the risk.

See references

Dihydrotachysterol Breastfeeding Warnings

There are no data on the excretion of dihydrotachysterol into human milk.

See references

References for pregnancy information

  1. Mallet E, Gugi B, Brunelle P, Henocq A, Basuyau JP, Lemeur H "Vitamin D supplementation in pregnancy: a controlled trial of two methods." Obstet Gynecol 68 (1986): 300-4
  2. Lester GE "Cholecalciferol and placental calcium transport." Fed Proc 45 (1986): 2524-7
  3. Delvin EE, Salle BL, Glorieux FH, Adeleine P, David LS "Vitamin D supplementation during pregnancy: effect on neonatal calcium homeostasis." J Pediatr 109 (1986): 328-34
  4. Rowe RD, Cooke RE "Vitamin D and craniofacial and dental anomalies of supravalvular stenosis." Pediatrics 43 (1969): 1-2
  5. Taussig HB "Possible injury to the cardiovascular system from vitamin D." Ann Intern Med 65 (1966): 1195-200
  6. Goodenday LS, Gordon GS "No risk from vitamin D in pregnancy." Ann Intern Med 75 (1971): 807-8
  7. "Product Information. DHT (dihydrotachysterol)." Roxane Laboratories Inc (2001):

References for breastfeeding information

  1. "Product Information. DHT (dihydrotachysterol)." Roxane Laboratories Inc (2001):

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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