If u lift sudafed does it impart u activeness?

a friend of mine suspected her fiance was on meth. so she drug tested him and it tested positive. he told her that he took some sudafed for energy and it was a false positive. very soon i know that sudafed can cause a false positive but can it gve u energy. i thought it made u drowsy.
Answers:
Some of the more common side effects include CNS stimulation, sleeplessness, uneasiness, excitability, dizziness and anxiety.
Yes, it can cause a false positive for meth. Source(s): Pharmacist

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