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It is used as a precursor in the industrial synthesis of doxycycline hyclate. [citation needed] It has been found to act as an agonist of the human pregnane X receptor ligand-binding domain and to induce CYP3A4 expression in vitro. [1]
Doxycycline, doxycycline monohydrate and doxycycline hyclate are yellow, crystalline powders with a bitter taste. The latter smells faintly of ethanol , a 1% aqueous solution has a pH of 2–3, and the specific rotation is [ α ] D 25 {\displaystyle [\alpha ]_{D}^{25}} −110° cm 3 /dm·g in 0.01 N methanolic hydrochloric acid .
A hyclate (Latin: hyclas) is a pharmaceutical term for hydrochloride hemiethanolate hemihydrate [1] [2] (·HCl· 1 / 2 EtOH· 1 / 2 H 2 O), e.g. doxycycline hyclate. [ 3 ] [ 4 ] References
Partial exceptions to these rules occur for doxycycline and minocycline, which may be taken with food (though not iron, antacids, or calcium supplements). Minocycline can be taken with dairy products because it does not chelate calcium as readily, although dairy products do decrease absorption of minocycline slightly. [39]
Here are links to possibly useful sources of information about Doxycycline. PubMed provides review articles from the past five years (limit to free review articles) The TRIP database provides clinical publications about evidence-based medicine. Other potential sources include: Centre for Reviews and Dissemination and CDC
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It is alleged that the price of 500 doxycycline tablets rose in the US from $20 to $1,849 in just seven months. [ 3 ] On October 31, 2024, Heritage Pharmaceuticals and Apotex agreed to pay $49.1 million to resolve allegations of price-fixing in collusion to artificially raise drug prices as charged by a coalition of 50 state attorneys general .