Long term Diazipan use and Antiretrovials
Jun 19, 2003
Hi A good friend of mine has been on Diazepam (Valium) for 26 years (12mg/day) for anxiety and stress. Could this long term use have some sort of effect on the drugs he has been taking for HIV? He was diagnosed 13 years ago and has been taking combination therapy for the last 6 years. In this time he has been on 13 combinations, all of which he has had to stop due to severe physcological and physical problems.These problems start within 3-4 weeks of starting a new combination. He has persevered with several for up to six months(God knows how!!!!).After stopping each combination, the psychological and physical problems dissapear within 5-7 days. The worst offenders were AZT, Kaletra, DDI and Ritonavir. A mutual friend in the medical field suggested that the Diazepam could be over sensitising his body to these drugs. Is this possible? Would a lower dose be effective? His CD4 has never been over 200 and viral load has only been undetectable when the side effects have been at their worst. When he was diagnosed, his CD4 was 171 and upon starting combination therapy his CD4 was down to 50. Any help would be very much appreciated.SJ
Response from Dr. Conway
The side effects of antiretroviral drugs are often more severe in patients with lower CD4 counts. Thus, it could be that the neuropsychological side effects of AZT would be quite pronounced in your friend. The same could be true of DDI, although it does appear to have a lower freqeuncy of side efects of this type, but can cause painful neuropathy. Otherwise, both Ritonavir and Kaletra (which also contains Ritonavir) would increase blood levels of diazepam and could cause side effects in this way.
It sounds as if the best approach for your friend (who clearly needs to be on antiretroviral medications, given the low CD4 count) is to design as "stress free" a regimen as possible. Ideally, this would include drugs that have a low pill burden, can be given once a day, and have a low probability of causing neuropsychological side effects. Such a regimen could include tenofovir, lamivudine and nevirapine, although the nevirapine could lower blood levels of diazepam. Other options exist and your friend should be prepared to discuss these issues with the doctor.
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