From my research I could not find any information about Maxalt (Rizatriptan) causing a false positive in a saliva test. It is worth knowing that if you are taking Maxalt for migraines legitimately ie. you have a prescription from a doctor, then there should not be a problem if they show up on a drug screening test.
You may find this useful : http://www.passthetest.com/false_positives.htm
- Maxalt Information for Consumers
- Maxalt Information for Healthcare Professionals (includes dosage details)
- Side Effects of Maxalt (detailed)
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