“…1 Abacavir is a nucleoside reverse transcriptase inhibitor that has progressively replaced stavudine (d4T) due to fewer toxic effects, such as lipodystrophy and metabolic abnormalities. 2,3 Abacavir is also preferred to tenofovir disoproxil fumarate for infants and children due to concerns about renal toxic effects and loss of bone mineral density in this population, 4 and the absence of a paediatric formulation of tenofovir disoproxil fumarate. 5 Thus, in the WHO consolidated guidelines on HIV prevention, 6 abacavir is part of the preferred firstline regimen for children aged 4 weeks or older weighing at least 3 kg, coupled with lamivudine and dolutegravir or alternatively ritonavirboosted lopinavir; whereas, tenofovir disoproxil fumarate is preferred to abacavir as a firstline regimen for individuals aged 10 years or older or those weighing at least 35 kg.…”