I've only just arrived <a href=" http://crmk.co.uk/nexium-40-mg-capsule-prospect.pdf ">esomeprazole mylan 20 mg</a> "There are some awkward situations where you want d4T, such as if someone becomes resistant to another drug," he says. Running out of drug stocks, which is not infrequent in African countries, means that d4T may have to be used in some cases, even if AZT or TDF are considered the treatment of choice. (When South Africa experienced a shortage of TDF in 2012, patients were given d4T instead.)