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Oystercal-D and Vitekta

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

Check result:
Oystercal-D <> Vitekta
Relevance: 09.06.2023 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:

Calcium carbonate may decrease the absorption and blood levels of elvitegravir when taken at the same time. Therefore, calcium carbonate should be taken at least 2 hours before or 2 hours after you take elvitegravir. Consult with your doctor if you have any questions or concerns. 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: The concomitant use of antacids may significantly decrease the plasma concentrations of elvitegravir. The mechanism of interaction has not been described. When 20 mL of antacid was given 2 hours before a 50 mg dose of elvitegravir with ritonavir (100 mg pharmacokinetic booster dose) to 11 study subjects, mean elvitegravir peak plasma concentration (Cmax), systemic exposure (AUC) and trough plasma concentration (Cmin) were reduced by 18%, 15% and 10%, respectively. When the antacid was given 2 hours after elvitegravir to 10 study subjects, mean elvitegravir Cmax, AUC, and Cmin decreased by approximately 20% each. Larger decreases may be expected if the antacid and elvitegravir doses were administered closer together, although data have not been reported. In contrast, when the antacid was given 4 hours before or 4 hours after elvitegravir, no significant differences were observed in elvitegravir pharmacokinetics compared to administration of elvitegravir alone.

MANAGEMENT: Antacid-containing preparations should be administered at least 2 hours before or 2 hours after the elvitegravir dose. Alternatively, H2-receptor antagonists or proton pump inhibitors may be considered, with no dosage adjustment needed.

References
  • Cerner Multum, Inc. "Australian Product Information." O 0
  • "Product Information. Stribild (cobicistat/elvitegravir/emtricitabine/tenofov)." Gilead Sciences, Foster City, CA.
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.

Vitekta

Generic Name: elvitegravir

Brand name: Vitekta

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