Dolutegravir 50 mg is a 9 mm diameter round yellow tablet.
Dolutegravir was approved in Europe in January 2014 and in the US in August 2013.
- Dolutegravir (tradename Tivicay) is an integrase inhibitor.
- The standard dose is 50 mg once-daily for people who are using HIV treatment for the first time and/or who do not have integrase resistance.
- A 50 mg twice-daily dose is needed in people using treatment for the first time if dolutegravir is used in combination with efavirenz, nevirapine, tipranavir/ritonavir, or rifampicin.
- A 50 mg dose, twice-daily is recommended for people who have drug resistance, or suspected drug resistance, to other integrase inhibitors.
- For most people, dolutegravir can be taken “with or without food”. However, taking with a meal is recommended for people with integrase drug resistance as food increases drug levels. This increase is greatest with a high fat meal. (Food study link)
- Drug interactions: There is a caution for interactions with some supplements, antacids and multivitamins. This requires separating the dolutegravir dose by at least four hours. Another important interaction is that dolutegravir doubles levels of metformin, and requires careful monitoring.
- A three-in-one formulation of dolutegravir plus abacavir plus 3TC in a single pill called Triumeq was approved on 22 August 2014 in the US and on 3rd September 2014 in the EU.
- Dolutegravir seems to have fewer side efffects than most other HIV drugs. However, since approval there have been more reports of CNS side effects (similar to efavirenz). These includes mood changes and difficulty sleeping. Although these are not common, case reports include needing to change to another drug.
- Dolutegravir may work for some people who have already developed low level (early) resistance to other integrase inhibitors like raltegravir or elvitegravir. Dolutegravir is much less likely to work if you have more extensive integrase inhibitor resistance. In one study (VIKING-3), having mutation 148 plus more than two other mutations from the group of G140A/C/S, L74I and E138A/K/T only saw 11% of people getting an undetectable viral load after six months.
- As with other ARVs, dolutegravir needs to be used in combination with other drugs that are active in order to avoid developing drug resistance.
The European patient leaflet and detailed Product Information for dolutegravir is online at this link (as Tivicay) at the European Medicines Agency (EMA) website.
The Patient Information is a simplified summary: what the drug is, why it is used, results from studies and cautions including side effects.
The Product Information is a detailed technical summary that you can access as a PDF file by clicking the ‘Product Information’ tab. It describes more precisely how the drug works and how it is processed by your body. This includes, for example, reported food interaction studies in terms of calories or fat content. It includes more details of the study results and a full list of side effects and drug interactions.