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Dextromethorphan's effects have been divided into four plateaus. [14] The first plateau (1.5 to 2.5 mg per kg body weight) is described as having euphoria, auditory changes, mild stimulation, and change in perception of gravity. The second plateau (2.5 to 7.5 mg/kg) causes intense euphoria, vivid imagination, and closed-eye hallucinations.
Dextromethorphan, sold under the brand name Robitussin among others, is a cough suppressant used in many cough and cold medicines. [6] In 2022, the US Food and Drug Administration (FDA) approved the combination dextromethorphan/bupropion to serve as a rapid-acting antidepressant in people with major depressive disorder.
The recommended adult dose contains: Acetaminophen (650 mg/30 mL) (pain reliever/fever reducer) Dextromethorphan (30 mg/30 mL) (cough suppressant) Doxylamine succinate (12.5 mg/30 mL) (antihistamine/hypnotic) Alcohol (10% by volume) The LiquiCap capsule version has the following active ingredients per pill, half the recommended adult dose:
Each formulation also varies per dose. When purchasing over-the-counter medications, avoid purchasing multiple products with acetaminophen ingredients. The suggested maximum daily intake of acetaminophen is limited to <4 grams (4,000 mg) daily in adults or <2.6g (2,600 mg) daily in children <12 years of age to reduce the risk of liver damage.
It is known to be sedative, making drowsiness a common side effect. It is an oral drug to be taken by mouth, to relieve symptoms of allergy, hay fever and the common cold. [1] It can also be used to relieve allergies such as itching, sneezing, runny nose, rash and hives. [1] Benadryl Allergy tablets. Benadryl Allergy for Children is also available.
Ketamine’s antidepressant effects are part of what prompted researchers to explore other drugs that target glutamate—like the venerable cough suppressant dextromethorphan found in Robitussin ...
Phenylephrine — found in drugs including Sudafed PE, Vicks Nyquil Sinex Nighttime Sinus Relief and Benadryl Allergy Plus Congestion — is the most popular oral decongestant in the United States ...
A single bedtime dose after the last feeding of the day may minimize the harmful effects of the medication on the baby and the milk supply. Still, non-sedating antihistamines are preferred. [37] Paradoxical reactions to diphenhydramine have been documented, particularly in children, and it may cause excitation instead of sedation. [38]