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Jody L Green, George Sam Wang, Kate M Reynolds, William Banner, G Randall Bond, Ralph E Kauffman, Robert B Palmer, Ian M Paul, Richard C Dart
BACKGROUND AND OBJECTIVES: The safety of cough and cold medication (CCM) use in children has been questioned. We describe the safety profile of CCMs in children <12 years of age from a multisystem surveillance program. METHODS: Cases with adverse events (AEs) after ingestion of at least 1 index CCM ingredient (brompheniramine, chlorpheniramine, dextromethorphan, diphenhydramine, doxylamine, guaifenesin, phenylephrine, and pseudoephedrine) in children <12 years of age were collected from 5 data sources...
May 4, 2017: Pediatrics
Tanya Duke-Novakovski, Barbara Ambros, Cindy Feng, Anthony P Carr
OBJECTIVE: To determine the accuracy of high-definition oscillometry (HDO) for arterial pressure measurement during injectable or inhalation anesthesia in horses. STUDY DESIGN: Prospective, clinical study. ANIMALS: Twenty-four horses anesthetized for procedures requiring lateral recumbency. METHODS: Horses were premedicated with xylazine, and anesthesia induced with diazepam-ketamine. Anesthesia was maintained with xylazine-ketamine-guaifenesin combination [TripleDrip (TD; n = 12) or isoflurane (ISO; n = 12)]...
January 11, 2017: Veterinary Anaesthesia and Analgesia
Agron Collaku, Yong Yue, Kenneth Reed
BACKGROUND/OBJECTIVE: Guaifenesin, an over-the-counter (OTC) expectorant, has exhibited muscle relaxant effects preclinically and clinically. This proof-of-principle study explored whether OTC doses of guaifenesin can provide relief from acute upper back, neck, or shoulder muscle spasm and pain. METHODS: This multicenter, placebo-controlled, repeat-dose, parallel study randomly assigned adults experiencing acute pain and muscle spasm in their upper back, neck, or shoulder to guaifenesin 600 or 1200 mg or matched placebo twice daily (BID) in a 2:2:1:1 ratio for 7 days...
2017: Journal of Pain Research
Hirotaka Tokushige, Masashi Kakizaki, Hirotaka Ode, Atsushi Okano, Jun Okada, Taisuke Kuroda, Ai Wakuno, Minoru Ohta
To evaluate the bispectral index (BIS) as an indicator of anesthetic depth in Thoroughbred horses, BIS values were measured at multiple stages of sevoflurane anesthesia in five horses anesthetized with guaifenesin and thiopental following premedication with xylazine. There was no significant difference between the BIS values recorded at end-tidal sevoflurane concentrations of 2.8% (median 60 ranging from 47 to 68) and 3.5% (median 71 ranging from 49 to 82) in anesthetized horses. These BIS values during anesthesia were significantly lower (P<0...
2016: Journal of Equine Science
Samah A Mohammed, Maya S Eissa, Hytham M Ahmed
Fast and sensitive HPLC method was developed, optimized and validated for quantification of linezolid (LNZ) in human plasma using guaifenesin as an internal standard (IS). Analyte and IS were extracted from plasma by simple protein precipitation extraction technique using methanol as the precipitating solvent. The pretreated samples were injected in a mobile phase formed of acetonitrile:water:methanol (20:70:10v/v/v) in an isocratic mode at a flow rate of 1.5mL/min with UV detection at 251nm. Separation was done using Aglient ODS C18...
February 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Shuhua Deng, Wencan Huang, Xiaojia Ni, Ming Zhang, Haoyang Lu, Zhanzhang Wang, Jinqing Hu, Xiuqing Zhu, Chang Qiu, Dewei Shang, Yuefeng Zhang, Linghui Xiong, Yuguan Wen
1. A new oral liquid formulation combining guaifenesin, pseudoephedrine and hydrocodone is effective in improving the symptoms of common cold. The pharmacokinetic properties of the individual components were evaluated in a randomized, open-label, four-period study in 12 healthy Chinese volunteers following single and multiple doses. The data were compared with data for the individual ingredients in Antuss®. 2. In the single-dose period, exposure levels (AUC and Cmax) for guaifenesin, pseudoephedrine and hydrocodone increased directly as the dose of the oral liquid formulation increased from 5 to 15 mL...
October 24, 2016: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
Xiaojian Lin, Rujin Gong, Jiaxu Li, Ping Li, Jianguo Yu, Alirio E Rodrigues
The separation of aminoglutethimide enantiomers by the continuous multicolumn chromatographic processes were investigated experimentally and theoretically, where the columns were packed with cellulose tris 3,5-dimethylphenyl-carbamate stationary phase (brand name Chiralcel OD) and mobile phase was a mixture of n-hexane and ethanol with monoethanolamine additive. The continuous enantioseparation processes included a synchronous shifting process (SMB) and an asynchronous shifting process (VARICOL), which allowed reducing the column number (here from six-column SMB to five-column VARICOL process)...
October 7, 2016: Journal of Chromatography. A
A M Kolbach-Mandel, N S Mandel, S R Cohen, J G Kleinman, F Ahmed, I C Mandel, J A Wesson
Drug-related kidney stones are a diagnostic problem, since they contain a large matrix (protein) fraction and are frequently incorrectly identified as matrix stones. A urine proteomics study patient produced a guaifenesin stone during her participation, allowing us to both correctly diagnose her disease and identify proteins critical to this drug stone-forming process. The patient provided three random midday urine samples for proteomics studies; one of which contained stone-like sediment with two distinct fractions...
April 2017: Urolithiasis
Ali Mohamed Yehia, Hebatallah Mohamed Essam
A generally applicable high-performance liquid chromatographic method for the qualitative and quantitative determination of pharmaceutical preparations containing phenylephrine hydrochloride, paracetamol, ephedrine hydrochloride, guaifenesin, doxylamine succinate, and dextromethorphan hydrobromide is developed. Optimization of chromatographic conditions was performed for the gradient elution using different buffer pH values, flow rates and two C18 stationary phases. The method was developed using a Kinetex® C18 column as a core-shell stationary phase with a gradient profile using buffer pH 5...
September 2016: Journal of Separation Science
Arham Shabbir, Sadia Shamsi, Muhammad Shahzad, Hajra Ikram Butt, Khurram Aamir, Javed Iqbal
OBJECTIVES: Guaifenesin possesses expectorant, muscle relaxant, and anticonvulsive properties. To the best of our knowledge, the promising data regarding the developmental toxicity of guaifenesin are scarce. The current study investigates the developmental toxic effects of guaifenesin in detail using female rats. MATERIALS AND METHODS: Twenty-five dams were divided into five groups. Group 1 served as a control, while Group-2, -3, -4, and -5 were administered with 250, 350, 500, and 600 (mg/kg b...
May 2016: Indian Journal of Pharmacology
Isla Arcaro, Berit L Fischer, Kara M Lascola, Stuart C Clark-Price
OBJECTIVE: To investigate the effects of intravenous (IV) administration of terbutaline on PaO2, PaCO2, pH, heart rate (HR) and arterial pressures in healthy, laterally recumbent horses breathing ambient air under total intravenous anesthesia (TIVA). STUDY DESIGN: Prospective experimental study. ANIMALS: Eight healthy adult horses were enrolled. Six horses, four mares and two geldings weighing 433-624 kg, completed the study. METHODS: Horses were sedated with xylazine (1...
January 2017: Veterinary Anaesthesia and Analgesia
Ali M Yehia, Heba M Mohamed
Green chemistry and sustainability is now entirely encompassed across the majority of pharmaceutical companies and research labs. Researchers' attention is careworn toward implementing the green analytical chemistry principles for more eco-friendly analytical methodologies. Solvents play a dominant role in determining the greenness of the analytical procedure. Using safer solvents, the greenness profile of the methodology could be increased remarkably. In this context, a green chromatographic method has been developed and validated for the simultaneous determination of phenylephrine, paracetamol, and guaifenesin in their ternary pharmaceutical mixture...
June 2016: Journal of Separation Science
Rowland Furcha, Joëlle Monnet
OBJECTIVE: The primary objective was to assess the warming sensation caused by flavor 316282 in a cold and cough product in the target population. METHODS: A single-cohort, single-treatment arm, open-label study. Subjects received one 30-mL dose of syrup containing flavor 316282, paracetamol, phenylephrine hydrochloride, and guaifenesin and recorded onset and disappearance of any warming sensation in the mouth/throat. Subjects' assessment of strength and appeal of the sensation, taste, texture, and acceptability of the product as a cold and cough remedy was investigated using questionnaires...
2014: SAGE Open Medicine
H K Knych, S D Stanley, D Benson, R M Arthur
Guaifenesin is an expectorant commonly used in performance horses to aid in the clearance of mucus from the airways. Guaifenesin is also a centrally acting skeletal muscle relaxant and as such is a prohibited drug with withdrawal necessary prior to competition. To the authors' knowledge, there are no reports in the literature describing single or multiple oral administrations of guaifenesin in the horse to determine a regulatory threshold and related withdrawal time. Therefore, the objective of the current study was to describe the pharmacokinetics of guaifenesin following oral administration in order to provide data upon which appropriate regulatory recommendations can be established...
August 2016: Journal of Veterinary Pharmacology and Therapeutics
Cecilia Melegari, Serena Bertoni, Alberto Genovesi, Kevin Hughes, Ali R Rajabi-Siahboomi, Nadia Passerini, Beatrice Albertini
The aim of the research was to investigate the complete process of pellet production in a Wurster fluidized bed coater in order to determine the main factors affecting the migration phenomenon of a soluble API through the ethycellulose film coating (Surelease®) and hence the long-term stability of the controlled release pellets. Guaifenesin (GFN), as BCS class I model drug, was layered on sugar spheres using a binder-polymer solution containing the dissolved GFN. The drug loaded pellets were then coated with Surelease®...
March 2016: European Journal of Pharmaceutics and Biopharmaceutics
Gary A Thompson, Gail Solomon, Helmut H Albrecht, Donald P Reitberg, Eric Guenin
This study characterized guaifenesin pharmacokinetics in children aged 2 to 17 years (n = 40) who received a single oral dose of guaifenesin (age-based doses of 100-400 mg) 2 hours after breakfast. Plasma samples were obtained before and for 8 hours after dosing and analyzed for guaifenesin using liquid chromatography-tandem mass spectrometry. Pharmacokinetic parameters were estimated using noncompartmental methods, relationships with age were assessed using linear regression, and dose proportionality was assessed on 95% confidence intervals...
July 2016: Journal of Clinical Pharmacology
W D Bennett, A Kala, H Duckworth, K L Zeman, J Wu, A Henderson, M Yopp, B K Rubin
BACKGROUND: Observational studies suggest that orally administered guaifenesin (GGE) may thin lower respiratory tract secretions but none have examined its effects on mucociliary and cough clearance (MCC/CC) during a respiratory tract infection (RTI). The current study was a randomized, parallel-group, double-blind, placebo-controlled study in non-smoking adults who suffered from an acute upper RTI. METHODS: We assessed the effects of a single dose of Mucinex(®) 1200 mg (2 × 600 mg extended release tablets) (ER GGE) on 1) MCC/CC by assessing the rate of removal from the lung of inhaled radioactive tracer particles (Tc99m-sulfur colloid), 2) sputum dynamic rheology by stress/strain creep transformation over the linear part of the curve, 3) sessile drop interfacial tension by the deNouy ring technique, and 4) subjective symptom measures...
November 2015: Respiratory Medicine
Darragh Halpenny, James Suh, Suzette Garofano, Jeffrey Alpert
A 29-year-old man presented with a 5-month history of worsening dry cough, exertional dyspnea, chest tightness, and palpitations. He had been treated by his primary care physician with trials of guaifenesin/codeine, azithromycin, albuterol, and omeprazole without improvement. He denied wheezing, fever, sweats, anorexia, joint pain, swelling, or rash. He had no past medical history. He denied a history of tobacco smoking or IV drug use. He kept no pets, worked as a manager in an office environment, and had no history of occupational inhalational exposure...
September 2015: Chest
Dan Zhang, Jin-A Park, Dong-Soon Kim, Seong-Kwan Kim, Soo-Jean Shin, Jae-Han Shim, Sung Chul Shin, Jin-Suk Kim, A M Abd El-Aty, Ho-Chul Shin
Analysis of residual quantities of contaminants in foods of animal origin is crucial for quality control of consumer products. This study was aimed to develop a simple and raid analytical method for detection of tetramisole and diethylcarbamazine using gradient liquid chromatography coupled with tandem mass spectrometry (LC/MS/MS). Tetramisole, diethylcarbamazine, and guaifenesin (as an internal standard) were extracted from milk, eggs, and porcine muscle using acetonitrile followed by partitioning at -20 °C for 1h...
February 1, 2016: Food Chemistry
Paul J Perry, Kristian Fredriksen, Stephanie Chew, Eric J Ip, Ingrid Lopes, Shadi Doroudgar, Kelan Thomas
Dextromethorphan (DXM) is abused most commonly among adolescents as a recreational drug to generate a dissociative experience. The objective of the study was to assess driving with and without DXM ingestion. The effects of one-time maximum daily doses of DXM 120 mg versus a guaifenesin 400 mg dose were compared among 40 healthy subjects using a crossover design. Subjects' ability to drive was assessed by their performance in a driving simulator (STISIM® Drive driving simulator software) and by conducting a standardized field sobriety test (SFST) administered 1-h postdrug administration...
September 2015: Journal of Forensic Sciences
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