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Drug/Laboratory Test Interactions: Persons taking most antibiotics, methotrexate and pyrimethamine invalidate folic acid and vitamin B12 diagnostic blood assays
Interaction discoveries: Limited use creates minimal adverse interaction data
High concentrations of GH and subsequent insulin-like growth factor-1 (IGF-1) can adversely affect insulin sensitivity and stimulate unwanted pathways associated with cell proliferation
(February 2009)
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