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New study finds vitamin D supplementation does not enhance absorption of the drug Protelos

Posted on: January 10, 2014   by  Jeff Nicklas


Strontium ranelate, marketed under the trade name Protelos, is a prescription drug used in the treatment of osteoporosis to reduce the risk of vertebral and hip fractures in postmenopausal women and derives from the chemical element strontium. It is different than other osteoporotic treatments in that it works to both promote bone formation and reduce bone resorption. In other words, strontium ranelate helps bones grow and reduces bone loss.

Strontium is very similar to calcium. Its nucleus is nearly the same size as calcium. Because of this, the body very easily absorbs strontium. There’s also some research that suggests the body metabolizes strontium similarly to calcium.

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2 Responses to New study finds vitamin D supplementation does not enhance absorption of the drug Protelos

  1. [email protected]

    It is my understanding that other strontium salts, e.g. carbonate, chloride, acetate, EDTA, are adsorbed as completely as the ranelate but were not patentable so Sr ranelate became the choice of Big Pharma.

    WHat vitamin “D” was used for supplementation? Since this appears to be a PHrMA supported study, it makes me think D2 so the results are not surprising.

  2. Brant Cebulla

    They used vitamin D3. The use of vitamin D2 in study is becoming rare.

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