I have been on ARVs for 3years now and have been taking Tenolam & Nevirapine, about 2&half months my medication was changed to Tenolam & Efarverenz and l have been experiencing headaches, backache and anxiety. My doctor has switched my meds and put me back on Tenolam & Nevirapine however six days since switching meds lm still experiencing anxiety and headaches, is this normal and how lond does it take for the side effects to disappear after switching medication?


Headache and anxiety can be caused or worsened by efavirenz but many other conditions may contribute. If the efavirenz was directly contributing to your symptoms it may take up to 2-3 weeks to show noticeable improvement due to how long the efavirenz can persist in blood and brain. KH