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How Long Does Flexeril Stay In Your System?

Flexeril (Cyclobenzaprine) is a drug approved by the FDA as a short-term adjunct treatment for skeletal muscle spasms along with physical therapy and rest.  Although its mechanism of action isn’t fully elucidated, it is thought to act within the central nervous system, principally at the brain stem.  Within the brain stem, it is believed to …

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How Long Does Benadryl Stay In Your System?

Benadryl is a brand name for a variety of over-the-counter (OTC) medications containing the chemical diphenhydramine, an antihistamine.  The drug was initially synthesized in 1943, was acquired by Pfizer in 1946, and became the first antihistamine to receive FDA approval in the United States.  The brand “Benadryl” was acquired by Johnson & Johnson (from Pfizer) …

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