Essential medicine, according to the WHO, "are intended to be available within the context of functioning health systems at all times in adequate amounts, in the appropriate dosage forms, with assured quality and adequate information, and at a price the individual and the community can afford."
Sida laga soo xigtay WHO, alaabooyinkan waa in la helaa "marwalba, qaddar ku filan, foomamka qiyaasta habboon, oo leh tayo la hubo iyo macluumaad ku filan, iyo qiime qofka iyo bulshada ay awoodi karaan."