Can naltrexone give a false-positive drug test?

A disadvantage of immunoassay is that other substances may interfere with the test and cause a false-positive result. This can be the case with naltrexone and some immunoassay urine drug tests.

Can naloxone cause a false-positive drug test?

For these reasons, clinicians should be aware that the commonly used opioid antagonist naloxone can produce false-positive opiate immunoassay results.

Is Naltrexone a controlled substance?

Naltrexone can be administered on a daily, twice a week or three times a week regimen, based on the clinical needs of the patient, and the therapeutic goals of the patient and therapist. Because naltrexone is unscheduled under the Controlled Substances Act, any licensed physician can prescribe this drug.

What is the half life of 50 mg naltrexone?

The plasma-half-life of naltrexone is approximately 4 hours, the average blood level is 8.55 mg/ml, and plasmaprotein-binding is 21\%. The plasma-half-life of 6-beta-naltrexol is 13 hours.

Does naltrexone block cannabinoid receptors?

For example, the opioid antagonist, naltrexone, did not alter cannabinoid analgesia (Greenwald and Stitzer, 2000), and did not antagonize the subjective, reinforcing or physiological effects of THC in human marijuana smokers (Wachtel and de Wit, 2000; Haney et al, 2003).

Does naltrexone need to be weaned?

Discontinuation of oral naltrexone is not associated with a withdrawal syndrome, and it is not necessary to taper the dose. Providers should remind patients that they should not take opioid medications for at least 3 days and that they may be more sensitive to the effects of opioid drugs (see Patient Education above).

Can I cut my naltrexone in half?

The tablet can be divided into equal doses. For use as an additional therapy within a comprehensive treatment program including psychological guidance for detoxified patients who have been opioid-dependent (see section 4.2 and 4.4) & alcohol dependence to support abstinence.

Does naltrexone interfere with Xanax?

Combining naltrexone and alprazolam might safely maximize efficacy while avoiding the untoward effects of the constituent compounds.