Didanosine (ddI)  NRTI  Oatp-2 like transporter has been implicated in its uptake. Transported by ENT1 across guinea pig BBB. Transported by ENT2. Transported by CNT1.b Transported by CNT3  Gibbs and Thomas (2002), Gibbs et al. (2003a,b), Baldwin et al. (2004), Li et al. (2001), Minuesa et al. (2008)