Objective:

This study-s objective is to establish and evaluate the clinical relevance of drug interactions during treatment of patients with hepatitis C.

Method:

A PubMed/MedLine search was conducted for articles published in English and Spanish from January 1, 2015 to March 30, 2017 using the terms Mesh: Hepatitis C AND drug interactions OR herb-drug interactions OR food-drug interactions, from studies conducted in humans. The clinical relevance of drug interactions was established and evaluated based on probability of occurrence and severity of interactions.

Results:

Of the 184 four articles identified, 92 were selected by title and abstract for full review. The full texts of two articles could not be accessed. Of the remaining articles, 57 describ ed relevant interactions. Of the 155 pairs of drugs that interact that were identified, 154 (99.4%) were pharmacokinetic, and one (0.6%) was pharmacodynamic. Thirty-four of the 155 pairs (21.9%) were assessed at level 1; 73 (47.1%) were assessed at level 2; 48 (31.0%) were assessed at level 3, none were assessed at level 4. In addition, 29 pairs of interacting drugs had no evidence of clinical relevance.

Conclusions:

More than 99% of clinically relevant drug interactions are pharmacokinetics and are associated with changes in metabolism and transport of drugs. Simeprevir and 3D (Paritaprevir/Ritonavir+ Ombitasvir+Dasabuvir) therapy had the greatest number of interactions.

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