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How Long Does Unisom Stay In Your System?

Unisom (doxylamine succinate) is a first-generation antihistamine available as an over-the-counter medication in the United States.  It is commonly used as a sleep aid (to combat insomnia), an antiallergenic (to reduce severe allergies), and sometimes to treat symptoms of the common cold.  The pharmacological ingredient within Unisom, known as “doxylamine,” functions predominantly via antagonism of H1 …

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How Long Does Kratom Stay In Your System?

Kratom (Mitragyna speciosa) is a tropical evergreen tree in the coffee family (Rubiaceae) native to Thailand and other parts of Southeast Asia.  Due to the fact that its leaves contain an array of therapeutic alkaloids, kratom leaves are commonly ingested orally via chewing or in a tea-like preparation for medicinal purposes.  Various alkaloids derived from …

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How Long Does Lortab Stay In Your System?

Lortab is a brand name medication engineered to contain active ingredients hydrocodone bitartrate (a synthetic opioid) and acetaminophen (a non-opioid analgesic).  The drug is typically prescribed for the treatment of moderate to severe acute, chronic, or postoperative pain.  The hydrocodone component of Lortab functions via binding to opioid receptors in the central nervous system, principally …

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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 Chantix Stay In Your System?

Chantix (Varenicline) is a drug marketed by Pfizer for the treatment of nicotine addiction.  It functions as a selective, competitive partial agonist at α4β2 (alpha-4-beta-2) nAChRs.  Competitive partial agonism at the α4β2 receptors decreases the binding of nicotine to these receptors, thereby modulating the release of dopamine in the mesolimbic pathway as triggered by nicotine …

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How Long Does Fentanyl Stay In Your System?

Fentanyl is a synthetic opioid drug that was originally synthesized in the early 1960s by Paul Janssen, founder of Janssen Pharmaceutica.  The drug initially gained mainstream popularity as a general anesthetic in the 1960s under the brand “Sublimaze”, a compound consisting of fentanyl and citric acid.  It wasn’t until the 1990s that fentanyl was approved …

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