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Atazanavir Capsules and Oystercal-D

Determining the interaction of Atazanavir Capsules and Oystercal-D and the possibility of their joint administration.

Check result:
Atazanavir Capsules <> Oystercal-D
Relevance: 15.11.2023 Reviewer: Shkutko P.M., M.D., in

In the database of official manuals used in the service creation an interaction registered by statistical results of studies was found, which can either lead to negative consequences for the patient health or strengthen a mutual positive effect. A doctor should be consulted to address the issue of joint drug administration.

Consumer:

Using calcium carbonate together with atazanavir may decrease the effects of atazanavir. Atazanavir should be administered 2 hours before or 1 hour after calcium carbonate. If your doctor does prescribe these medications together, you may need a dose adjustment or special test to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Professional:

ADJUST DOSING INTERVAL: Concurrent administration of antacids or other agents with acid-neutralizing effects may decrease the oral bioavailability of atazanavir and substantially reduce its concentrations in plasma. Atazanavir solubility decreases with increasing pH, thus reduction in gastric acidity may interfere with dissolution of the drug. Subtherapeutic antiretroviral drug levels may lead to reduced viral susceptibility and development of resistance.

MANAGEMENT: Atazanavir should be administered 2 hours before or 1 hour after antacids or other oral agents with acid-neutralizing effects.

References
  • "Product Information. Reyataz (atazanavir)." Bristol-Myers Squibb, Princeton, NJ.
  • Durant J, Clevenbergh P, Garraffo R, Halfon P, Icard S, DelGiudice P, Montagne N, Schapiro JM, Dellamonica P "Importance of protease inhibitor plasma levels in HIV-infected patients treated with genotypic-guided therapy: pharmacological data from the Viradapt Study." Aids 14 (2000): 1333-9
  • Ray JE, Marriott D, Bloch MT, McLachlan AJ "Therapeutic drug monitoring of atazanavir: surveillance of pharmacotherapy in the clinic." Br J Clin Pharmacol 60 (2005): 291-9
Atazanavir Capsules

Generic Name: atazanavir

Brand name: Reyataz

Synonyms: Atazanavir

Oystercal-D

Generic Name: calcium / vitamin d

Brand name: Calcitrate with D, Caltrate 600+D Soft Chews, Citracal + D, Os-Cal Extra D3, Oystercal-D, UpCal D, Os-Cal 250 with D, Oysco D, Dical-D, Calcet, Oyster Shell Calcium with Vitamin D, O-Cal-D, Oyster-D, Oyst-Cal-D, Caltro with Vitamin D, Oysco 500 with D, Oysco D with Calcium, Os-Cal with D, Caltrate 600 with D, Calcarb with D, Posture-D H/P, Dical Captabs, Dicalphos plus D, Os-Cal 500 with D, Caltrate 600 with D Plus Soy, Caltrate Colon Health, Calvite P & D, Sedecal D, Chewable Calcium with Vitamin D, Osteocit D Plus, Os-Cal 500 + D, Citracal Petites, Citracal Creamy Bites, Citracal 250 mg + D, Calcio Del Mar, Citrus Calcium with Vitamin D, Calcium 600+D, Risacal-D, Liquid Calcium with Vitamin D, Citracal Maximum + D, Citracal Calcium + D Slow Release 1200, Citracal Calcium Gummies, Caltrate Gummy Bites, Super Calcium 600 + D3 400, Os-Cal Calcium+D3, Caltrate 600 + D, Citracal Regular, Calcet Petites, Calcium 500+D, D3 with Calcium, Calcitrate, Caltrate 600+D, Os-Cal 500+D, Os-Cal 500+Extra D Chewable

Synonyms: n.a.

In the course of checking the drug compatibility and interactions, data from the following reference sources was used: Drugs.com, Rxlist.com, Webmd.com, Medscape.com.

Interaction with food and lifestyle
Disease interaction