The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial

Introduction: Upper respiratory tract infections (URTIs) are caused by bacteria or viruses, with the most common causes being the common cold and influenza. The high occurrence of URTI means therapies that are effective with minimal side effects are in constant demand. Palmitoylethanolamide (PEA) is...
Ausführliche Beschreibung

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Autor*in:	Amanda Rao [verfasserIn] Rachael Skinner [verfasserIn] David Briskey [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	palmitoylethanolamide URTI cold flu

Übergeordnetes Werk:	In: Nutrients - MDPI AG, 2009, 15(2023), 4453, p 4453
Übergeordnetes Werk:	volume:15 ; year:2023 ; number:4453, p 4453

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/nu15204453

Katalog-ID:	DOAJ093095031

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520			\|a Introduction: Upper respiratory tract infections (URTIs) are caused by bacteria or viruses, with the most common causes being the common cold and influenza. The high occurrence of URTI means therapies that are effective with minimal side effects are in constant demand. Palmitoylethanolamide (PEA) is a signaling lipid previously shown to be effective in improving the incidence of URTIs. The aim of this study was to assess the effectiveness of PEA (Levagen+) on URTI incidence, duration, and severity. Methods: Participants (<i<n</i< = 426) consumed either 300 mg of Levagen+ or a placebo (maltodextrin) twice daily for 12 weeks. Participants completed the Wisconsin Upper Respiratory Symptom Survey 24 questionnaire daily upon the commencement of symptoms until symptoms subsided. Results: The Levagen+ group reported fewer URTI episodes (39 vs. 64) compared to the placebo group. The Levagen+ group reported a significant reduction in the median severity score of URTI symptoms for scratchy throat (3 vs. 7) and cough (2 vs. 7) compared to the placebo group. Conclusions: The results of this study show Levagen+ to be safe and effective in reducing the incidence and symptoms associated with URTIs.
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allfields	10.3390/nu15204453 doi (DE-627)DOAJ093095031 (DE-599)DOAJ1641a714119d4289be63c3abbb1a21ca DE-627 ger DE-627 rakwb eng TX341-641 Amanda Rao verfasserin aut The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Introduction: Upper respiratory tract infections (URTIs) are caused by bacteria or viruses, with the most common causes being the common cold and influenza. The high occurrence of URTI means therapies that are effective with minimal side effects are in constant demand. Palmitoylethanolamide (PEA) is a signaling lipid previously shown to be effective in improving the incidence of URTIs. The aim of this study was to assess the effectiveness of PEA (Levagen+) on URTI incidence, duration, and severity. Methods: Participants (<i<n</i< = 426) consumed either 300 mg of Levagen+ or a placebo (maltodextrin) twice daily for 12 weeks. Participants completed the Wisconsin Upper Respiratory Symptom Survey 24 questionnaire daily upon the commencement of symptoms until symptoms subsided. Results: The Levagen+ group reported fewer URTI episodes (39 vs. 64) compared to the placebo group. The Levagen+ group reported a significant reduction in the median severity score of URTI symptoms for scratchy throat (3 vs. 7) and cough (2 vs. 7) compared to the placebo group. Conclusions: The results of this study show Levagen+ to be safe and effective in reducing the incidence and symptoms associated with URTIs. palmitoylethanolamide URTI cold flu Nutrition. Foods and food supply Rachael Skinner verfasserin aut David Briskey verfasserin aut In Nutrients MDPI AG, 2009 15(2023), 4453, p 4453 (DE-627)610604155 (DE-600)2518386-2 20726643 nnns volume:15 year:2023 number:4453, p 4453 https://doi.org/10.3390/nu15204453 kostenfrei https://doaj.org/article/1641a714119d4289be63c3abbb1a21ca kostenfrei https://www.mdpi.com/2072-6643/15/20/4453 kostenfrei https://doaj.org/toc/2072-6643 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 15 2023 4453, p 4453
spelling	10.3390/nu15204453 doi (DE-627)DOAJ093095031 (DE-599)DOAJ1641a714119d4289be63c3abbb1a21ca DE-627 ger DE-627 rakwb eng TX341-641 Amanda Rao verfasserin aut The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Introduction: Upper respiratory tract infections (URTIs) are caused by bacteria or viruses, with the most common causes being the common cold and influenza. The high occurrence of URTI means therapies that are effective with minimal side effects are in constant demand. Palmitoylethanolamide (PEA) is a signaling lipid previously shown to be effective in improving the incidence of URTIs. The aim of this study was to assess the effectiveness of PEA (Levagen+) on URTI incidence, duration, and severity. Methods: Participants (<i<n</i< = 426) consumed either 300 mg of Levagen+ or a placebo (maltodextrin) twice daily for 12 weeks. Participants completed the Wisconsin Upper Respiratory Symptom Survey 24 questionnaire daily upon the commencement of symptoms until symptoms subsided. Results: The Levagen+ group reported fewer URTI episodes (39 vs. 64) compared to the placebo group. The Levagen+ group reported a significant reduction in the median severity score of URTI symptoms for scratchy throat (3 vs. 7) and cough (2 vs. 7) compared to the placebo group. Conclusions: The results of this study show Levagen+ to be safe and effective in reducing the incidence and symptoms associated with URTIs. palmitoylethanolamide URTI cold flu Nutrition. Foods and food supply Rachael Skinner verfasserin aut David Briskey verfasserin aut In Nutrients MDPI AG, 2009 15(2023), 4453, p 4453 (DE-627)610604155 (DE-600)2518386-2 20726643 nnns volume:15 year:2023 number:4453, p 4453 https://doi.org/10.3390/nu15204453 kostenfrei https://doaj.org/article/1641a714119d4289be63c3abbb1a21ca kostenfrei https://www.mdpi.com/2072-6643/15/20/4453 kostenfrei https://doaj.org/toc/2072-6643 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 15 2023 4453, p 4453
allfields_unstemmed	10.3390/nu15204453 doi (DE-627)DOAJ093095031 (DE-599)DOAJ1641a714119d4289be63c3abbb1a21ca DE-627 ger DE-627 rakwb eng TX341-641 Amanda Rao verfasserin aut The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Introduction: Upper respiratory tract infections (URTIs) are caused by bacteria or viruses, with the most common causes being the common cold and influenza. The high occurrence of URTI means therapies that are effective with minimal side effects are in constant demand. Palmitoylethanolamide (PEA) is a signaling lipid previously shown to be effective in improving the incidence of URTIs. The aim of this study was to assess the effectiveness of PEA (Levagen+) on URTI incidence, duration, and severity. Methods: Participants (<i<n</i< = 426) consumed either 300 mg of Levagen+ or a placebo (maltodextrin) twice daily for 12 weeks. Participants completed the Wisconsin Upper Respiratory Symptom Survey 24 questionnaire daily upon the commencement of symptoms until symptoms subsided. Results: The Levagen+ group reported fewer URTI episodes (39 vs. 64) compared to the placebo group. The Levagen+ group reported a significant reduction in the median severity score of URTI symptoms for scratchy throat (3 vs. 7) and cough (2 vs. 7) compared to the placebo group. Conclusions: The results of this study show Levagen+ to be safe and effective in reducing the incidence and symptoms associated with URTIs. palmitoylethanolamide URTI cold flu Nutrition. Foods and food supply Rachael Skinner verfasserin aut David Briskey verfasserin aut In Nutrients MDPI AG, 2009 15(2023), 4453, p 4453 (DE-627)610604155 (DE-600)2518386-2 20726643 nnns volume:15 year:2023 number:4453, p 4453 https://doi.org/10.3390/nu15204453 kostenfrei https://doaj.org/article/1641a714119d4289be63c3abbb1a21ca kostenfrei https://www.mdpi.com/2072-6643/15/20/4453 kostenfrei https://doaj.org/toc/2072-6643 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 15 2023 4453, p 4453
allfieldsGer	10.3390/nu15204453 doi (DE-627)DOAJ093095031 (DE-599)DOAJ1641a714119d4289be63c3abbb1a21ca DE-627 ger DE-627 rakwb eng TX341-641 Amanda Rao verfasserin aut The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Introduction: Upper respiratory tract infections (URTIs) are caused by bacteria or viruses, with the most common causes being the common cold and influenza. The high occurrence of URTI means therapies that are effective with minimal side effects are in constant demand. Palmitoylethanolamide (PEA) is a signaling lipid previously shown to be effective in improving the incidence of URTIs. The aim of this study was to assess the effectiveness of PEA (Levagen+) on URTI incidence, duration, and severity. Methods: Participants (<i<n</i< = 426) consumed either 300 mg of Levagen+ or a placebo (maltodextrin) twice daily for 12 weeks. Participants completed the Wisconsin Upper Respiratory Symptom Survey 24 questionnaire daily upon the commencement of symptoms until symptoms subsided. Results: The Levagen+ group reported fewer URTI episodes (39 vs. 64) compared to the placebo group. The Levagen+ group reported a significant reduction in the median severity score of URTI symptoms for scratchy throat (3 vs. 7) and cough (2 vs. 7) compared to the placebo group. Conclusions: The results of this study show Levagen+ to be safe and effective in reducing the incidence and symptoms associated with URTIs. palmitoylethanolamide URTI cold flu Nutrition. Foods and food supply Rachael Skinner verfasserin aut David Briskey verfasserin aut In Nutrients MDPI AG, 2009 15(2023), 4453, p 4453 (DE-627)610604155 (DE-600)2518386-2 20726643 nnns volume:15 year:2023 number:4453, p 4453 https://doi.org/10.3390/nu15204453 kostenfrei https://doaj.org/article/1641a714119d4289be63c3abbb1a21ca kostenfrei https://www.mdpi.com/2072-6643/15/20/4453 kostenfrei https://doaj.org/toc/2072-6643 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 15 2023 4453, p 4453
allfieldsSound	10.3390/nu15204453 doi (DE-627)DOAJ093095031 (DE-599)DOAJ1641a714119d4289be63c3abbb1a21ca DE-627 ger DE-627 rakwb eng TX341-641 Amanda Rao verfasserin aut The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Introduction: Upper respiratory tract infections (URTIs) are caused by bacteria or viruses, with the most common causes being the common cold and influenza. The high occurrence of URTI means therapies that are effective with minimal side effects are in constant demand. Palmitoylethanolamide (PEA) is a signaling lipid previously shown to be effective in improving the incidence of URTIs. The aim of this study was to assess the effectiveness of PEA (Levagen+) on URTI incidence, duration, and severity. Methods: Participants (<i<n</i< = 426) consumed either 300 mg of Levagen+ or a placebo (maltodextrin) twice daily for 12 weeks. Participants completed the Wisconsin Upper Respiratory Symptom Survey 24 questionnaire daily upon the commencement of symptoms until symptoms subsided. Results: The Levagen+ group reported fewer URTI episodes (39 vs. 64) compared to the placebo group. The Levagen+ group reported a significant reduction in the median severity score of URTI symptoms for scratchy throat (3 vs. 7) and cough (2 vs. 7) compared to the placebo group. Conclusions: The results of this study show Levagen+ to be safe and effective in reducing the incidence and symptoms associated with URTIs. palmitoylethanolamide URTI cold flu Nutrition. Foods and food supply Rachael Skinner verfasserin aut David Briskey verfasserin aut In Nutrients MDPI AG, 2009 15(2023), 4453, p 4453 (DE-627)610604155 (DE-600)2518386-2 20726643 nnns volume:15 year:2023 number:4453, p 4453 https://doi.org/10.3390/nu15204453 kostenfrei https://doaj.org/article/1641a714119d4289be63c3abbb1a21ca kostenfrei https://www.mdpi.com/2072-6643/15/20/4453 kostenfrei https://doaj.org/toc/2072-6643 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 15 2023 4453, p 4453
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source	In Nutrients 15(2023), 4453, p 4453 volume:15 year:2023 number:4453, p 4453
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authorswithroles_txt_mv	Amanda Rao @@aut@@ Rachael Skinner @@aut@@ David Briskey @@aut@@
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callnumber-first	T - Technology
author	Amanda Rao
spellingShingle	Amanda Rao misc TX341-641 misc palmitoylethanolamide misc URTI misc cold misc flu misc Nutrition. Foods and food supply The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial
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topic_title	TX341-641 The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial palmitoylethanolamide URTI cold flu
topic	misc TX341-641 misc palmitoylethanolamide misc URTI misc cold misc flu misc Nutrition. Foods and food supply
topic_unstemmed	misc TX341-641 misc palmitoylethanolamide misc URTI misc cold misc flu misc Nutrition. Foods and food supply
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title	The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial
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title_full	The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial
author_sort	Amanda Rao
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title_sort	efficacy of palmitoylethanolamide (levagen+) on the incidence and symptoms of upper respiratory tract infection—a double blind, randomised, placebo-controlled trial
callnumber	TX341-641
title_auth	The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial
abstract	Introduction: Upper respiratory tract infections (URTIs) are caused by bacteria or viruses, with the most common causes being the common cold and influenza. The high occurrence of URTI means therapies that are effective with minimal side effects are in constant demand. Palmitoylethanolamide (PEA) is a signaling lipid previously shown to be effective in improving the incidence of URTIs. The aim of this study was to assess the effectiveness of PEA (Levagen+) on URTI incidence, duration, and severity. Methods: Participants (<i<n</i< = 426) consumed either 300 mg of Levagen+ or a placebo (maltodextrin) twice daily for 12 weeks. Participants completed the Wisconsin Upper Respiratory Symptom Survey 24 questionnaire daily upon the commencement of symptoms until symptoms subsided. Results: The Levagen+ group reported fewer URTI episodes (39 vs. 64) compared to the placebo group. The Levagen+ group reported a significant reduction in the median severity score of URTI symptoms for scratchy throat (3 vs. 7) and cough (2 vs. 7) compared to the placebo group. Conclusions: The results of this study show Levagen+ to be safe and effective in reducing the incidence and symptoms associated with URTIs.
abstractGer	Introduction: Upper respiratory tract infections (URTIs) are caused by bacteria or viruses, with the most common causes being the common cold and influenza. The high occurrence of URTI means therapies that are effective with minimal side effects are in constant demand. Palmitoylethanolamide (PEA) is a signaling lipid previously shown to be effective in improving the incidence of URTIs. The aim of this study was to assess the effectiveness of PEA (Levagen+) on URTI incidence, duration, and severity. Methods: Participants (<i<n</i< = 426) consumed either 300 mg of Levagen+ or a placebo (maltodextrin) twice daily for 12 weeks. Participants completed the Wisconsin Upper Respiratory Symptom Survey 24 questionnaire daily upon the commencement of symptoms until symptoms subsided. Results: The Levagen+ group reported fewer URTI episodes (39 vs. 64) compared to the placebo group. The Levagen+ group reported a significant reduction in the median severity score of URTI symptoms for scratchy throat (3 vs. 7) and cough (2 vs. 7) compared to the placebo group. Conclusions: The results of this study show Levagen+ to be safe and effective in reducing the incidence and symptoms associated with URTIs.
abstract_unstemmed	Introduction: Upper respiratory tract infections (URTIs) are caused by bacteria or viruses, with the most common causes being the common cold and influenza. The high occurrence of URTI means therapies that are effective with minimal side effects are in constant demand. Palmitoylethanolamide (PEA) is a signaling lipid previously shown to be effective in improving the incidence of URTIs. The aim of this study was to assess the effectiveness of PEA (Levagen+) on URTI incidence, duration, and severity. Methods: Participants (<i<n</i< = 426) consumed either 300 mg of Levagen+ or a placebo (maltodextrin) twice daily for 12 weeks. Participants completed the Wisconsin Upper Respiratory Symptom Survey 24 questionnaire daily upon the commencement of symptoms until symptoms subsided. Results: The Levagen+ group reported fewer URTI episodes (39 vs. 64) compared to the placebo group. The Levagen+ group reported a significant reduction in the median severity score of URTI symptoms for scratchy throat (3 vs. 7) and cough (2 vs. 7) compared to the placebo group. Conclusions: The results of this study show Levagen+ to be safe and effective in reducing the incidence and symptoms associated with URTIs.
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title_short	The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial
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The Efficacy of Palmitoylethanolamide (Levagen+) on the Incidence and Symptoms of Upper Respiratory Tract Infection—A Double Blind, Randomised, Placebo-Controlled Trial

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