Abacavir and Lamivudine Tablets and Trimethoprim Tablets
Determining the interaction of Abacavir and Lamivudine Tablets and Trimethoprim Tablets and the possibility of their joint administration.
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:Consumer information for this minor interaction is not currently available. Some minor drug interactions may not be clinically relevant in all patients. Minor drug interactions do not usually cause harm or require a change in therapy. However, your healthcare provider can determine if adjustments to your medications are needed.
Professional:In a study with 14 HIV-positive patients, coadministration of trimethoprim/sulfamethoxazole (TMP/SMX DS once a day for 5 days) and lamivudine (300 mg single dose on day 5) resulted in a mean decrease of 35% in lamivudine renal clearance and a mean increase of 43% in lamivudine area under the plasma concentration-time curve. The mechanism of interaction is thought to be competitive inhibition of tubular secretion by trimethoprim. Lamivudine did not affect the pharmacokinetic profile of TMP/SMX. Given the favorable safety profile of lamivudine, this interaction is unlikely to be of clinical significance. However, the effect of higher dosages of TMP/SMX on lamivudine pharmacokinetics has not been investigated.
- "Product Information. Epivir (lamivudine)." Glaxo Wellcome, Research Triangle Park, NC.
- Moore KHP, Yuen GJ, Raasch RH, Eron JJ, Martin D, Mydlow PK, Hussey EK "Pharmacokinetics of lamivudine administered alone and with trimethoprim-sulfamethoxazole." Clin Pharmacol Ther 59 (1996): 550-8
Generic Name: abacavir / lamivudine
Brand name: Epzicom
Synonyms: Abacavir and lamivudine
Generic Name: trimethoprim
Brand name: Primsol, Trimpex, Proloprim
Synonyms: Trimethoprim
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.
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