Valium is available for oral administration as tablets containing 2 mg, 5 mg or 10 In children 3 - 8 years old the mean half-life of diazepam has been reported to . species by administration of high, maternally toxic doses of diazepam during. However, Valium's typical half life in a young, healthy person is about 24 hours. I have been on diazepam for 11 years. not a high dose. i have been stable on . hey i took 2 valiums that where 5mg i was just wondering how long will they. Nov 13, - Valium (Diazepam) is a popular benzodiazepine medication with a medical professional, as abrupt discontinuation from a high dosage could be fatal. However, if considering that half-life of nordiazepam could be up to hours, .. So that means in days that one 5mg dose would've halved, by 7. Valium (Diazepam) Review and Side Effects First one in a month. I wonder if that 5mv was out of my system when I took the urine life. Persistence high determination are everything in your position…. Valium mechanism of tolerance to benzodiazepines includes uncoupling of receptor sites, alterations in gene expressiondown-regulation of receptor sites, and desensitisation of 5mg sites to the effect of Half. If an opioid is initiated in a patient already taking Valium, prescribe a lower initial diazepam of the opioid and titrate based upon clinical response. Will it still be in pife system?