Interactions between Tivicay and Troleandomycin
1 drug interaction and 7 additional warnings found for the following 2 drugs:
- Tivicay (dolutegravir)
- troleandomycin
Drug interactions
Minor drug interactions
Minor:
troleandomycin dolutegravir
Applies to: troleandomycin and Tivicay (dolutegravir)
Theoretically, coadministration with inhibitors of UGT1A or CYP450 3A4 isoenzymes may increase the plasma concentrations of dolutegravir, which is primarily metabolized by UGT1A1 with some contribution from CYP450 3A4. Dolutegravir is also a substrate of UGT1A3, UGT1A9, BCRP, and P-glycoprotein in vitro. Potent CYP450 3A4 inhibitors such as boceprevir (800 mg every 8 hours) and telaprevir (750 mg every 8 hours) had no significant effects on the pharmacokinetics of dolutegravir given at 50 mg once daily. The interaction has not been studied or reported with UGT1A1 inhibitors such as nilotinib, regorafenib, and sorafenib. However, it is possible that simultaneous inhibition of UGT1A1 and CYP450 3A4 may lead to a clinically significant interaction with dolutegravir. In 12 study subjects, administration of dolutegravir (30 mg once daily) with the dual UGT1A1 and CYP450 3A4 inhibitor, atazanavir (400 mg once daily), increased dolutegravir peak plasma concentration (Cmax), systemic exposure (AUC) and trough plasma concentration (Cmin; 24 hours post-dose) by 50%, 91% and 180%, respectively, compared to administration without atazanavir. When the same dosage of dolutegravir was given with atazanavir/ritonavir 300 mg/100 mg once daily, the Cmax, AUC and Cmin of dolutegravir increased by 34%, 62% and 121%, respectively. Because safety data regarding increased dolutegravir exposures are limited, caution may be advisable if dolutegravir is used in combination with both a UGT1A1 inhibitor and a CYP450 3A4 inhibitor.
References (7)
- (2025) "Product Information. Tivicay PD (dolutegravir)." ViiV Healthcare
- (2025) "Product Information. Tivicay (dolutegravir)." ViiV Healthcare UK Ltd
- (2026) "Product Information. Dolutegravir/Lamivudine/Tenofovir Disoproxil Fumarate (dolutegravir/lamivudine/tenofovir)." Aspen Pharma USA Inc.
- (2025) "Product Information. Tivicay (dolutegravir)." ViiV Healthcare ULC
- (2026) "Product Information. Tivicay (dolutegravir)." ViiV Healthcare Pty Ltd
- (2026) "Product Information. TIVICAY (dolutegravir)." GLAXOSMITHKLINE BRASIL LTDA
- (2018) "Product Information. TIVICAY (dolutegravir)." VIIV HEALTHCARE BV
Food/lifestyle interactions
Minor food/lifestyle interactions
Minor:
dolutegravir Food/Lifestyle
Applies to: Tivicay (dolutegravir)
Food increases the extent of absorption and slows the rate of absorption of dolutegravir. When administered with a low-, moderate- or high-fat meal, dolutegravir peak plasma concentration (Cmax) increased by 46%, 52% and 67%, systemic exposure (AUC) increased by 33%, 41% and 66%, and time to reach Cmax (Tmax) increased from 2 hours to 3, 4 and 5 hours, respectively, compared to administration under fasted conditions. Dolutegravir may be taken with or without food.
References (7)
- (2025) "Product Information. Tivicay PD (dolutegravir)." ViiV Healthcare
- (2025) "Product Information. Tivicay (dolutegravir)." ViiV Healthcare UK Ltd
- (2026) "Product Information. Dolutegravir/Lamivudine/Tenofovir Disoproxil Fumarate (dolutegravir/lamivudine/tenofovir)." Aspen Pharma USA Inc.
- (2025) "Product Information. Tivicay (dolutegravir)." ViiV Healthcare ULC
- (2026) "Product Information. Tivicay (dolutegravir)." ViiV Healthcare Pty Ltd
- (2026) "Product Information. TIVICAY (dolutegravir)." GLAXOSMITHKLINE BRASIL LTDA
- (2018) "Product Information. TIVICAY (dolutegravir)." VIIV HEALTHCARE BV
Disease interactions
6 potential interactions Applies to: 5 conditions, including Hemodialysis, Liver Disease, Noninfectious Colitis, Biliary Obstruction, and Infectious Hepatitis.
Biliary Obstruction
Major:
troleandomycin
Troleandomycin has a major potential interaction with Biliary Obstruction.
Troleandomycin is primarily excreted by the liver and may accumulate in patients with impaired hepatic function. In addition, the use of troleandomycin has been associated with an allergic type of cholestatic hepatitis, particularly in patients receiving the drug for more than 2 weeks or given repeated courses. Therapy with troleandomycin should be administered cautiously in patients with liver and/or biliary disease. Liver function tests should be monitored during prolonged or repeated courses of therapy, and the drug discontinued if abnormalities develop.
Hemodialysis
Moderate:
Tivicay
The dolutegravir in Tivicay has a moderate potential interaction with Hemodialysis.
Dolutegravir has not been studied in patients on dialysis, so caution is recommended if used in these patients.
Infectious Hepatitis
Moderate:
Tivicay
The dolutegravir in Tivicay has a moderate potential interaction with Infectious Hepatitis.
Patients with underlying hepatitis B or C may be at increased risk for worsening or development of transaminase elevations with the use of dolutegravir. In some cases there was hepatitis B reactivation particularly in a setting where anti- hepatitis treatment was withdrawn. Appropriate laboratory testing prior to initiating treatment and monitoring for hepatotoxicity during therapy is recommended in patients with underlying hepatitis B or C.
Liver Disease
Major:
troleandomycin
Troleandomycin has a major potential interaction with Liver Disease.
Troleandomycin is primarily excreted by the liver and may accumulate in patients with impaired hepatic function. In addition, the use of troleandomycin has been associated with an allergic type of cholestatic hepatitis, particularly in patients receiving the drug for more than 2 weeks or given repeated courses. Therapy with troleandomycin should be administered cautiously in patients with liver and/or biliary disease. Liver function tests should be monitored during prolonged or repeated courses of therapy, and the drug discontinued if abnormalities develop.
Moderate:
Tivicay
The dolutegravir in Tivicay has a moderate potential interaction with Liver Disease.
The effect of severe hepatic impairment (Child - Pugh C) on the pharmacokinetics of dolutegravir has not been studied, therefore dolutegravir is not recommended for use on these patients. No dosage adjustment is needed for patients with mild or moderate hepatic impairment.
Noninfectious Colitis
Major:
troleandomycin
Troleandomycin has a major potential interaction with Noninfectious Colitis.
Clostridioides difficile-associated diarrhea (CDAD), formerly pseudomembranous colitis, has been reported with almost all antibacterial drugs and may range from mild diarrhea to fatal colitis. The most common culprits include clindamycin and lincomycin. Antibacterial therapy alters the normal flora of the colon, leading to overgrowth of C difficile, whose toxins A and B contribute to CDAD development. Morbidity and mortality are increased with hypertoxin-producing strains of C difficile; these infections can be resistant to antimicrobial therapy and may require colectomy. CDAD must be considered in all patients who present with diarrhea after antibacterial use. Since CDAD has been reported to occur more than 2 months after antibacterial use, careful medical history is necessary. Therapy with broad-spectrum antibacterials and other agents with significant antibacterial activity should be administered cautiously in patients with history of gastrointestinal disease, particularly colitis; pseudomembranous colitis (generally characterized by severe, persistent diarrhea and severe abdominal cramps, and sometimes associated with the passage of blood and mucus), if it occurs, may be more severe in these patients and may be associated with flares in underlying disease activity. Antibacterial drugs not directed against C difficile may need to be stopped if CDAD is suspected or confirmed. Appropriate fluid and electrolyte management, protein supplementation, antibacterial treatment of C difficile, and surgical evaluation should be started as clinically indicated.
More resources
Tivicay
A total of 323 drugs are known to interact with Tivicay.
- Tivicay is in the drug class integrase strand transfer inhibitor.
- Tivicay is used to treat HIV-1 Infection.
troleandomycin
A total of 544 drugs are known to interact with troleandomycin.
- Troleandomycin is in the drug class macrolides.
- Troleandomycin is used to treat the following conditions:
Drug Interaction Classification
| Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
| Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
| Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. | |
| No interaction information available. |
Further information
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