J. Pharm. Pharmacogn. Res., vol. 14, no. 5, Article ID 2902, Sep-Oct 2026.

DOI: https://doi.org/10.56499/jppres_14.5.2902

Original Article

Knowledge, attitudes, perceptions, and use of clove (Syzygium aromaticum) among adults in Jordan: A cross-sectional online survey

[Conocimientos, actitudes, percepciones y uso del clavo de olor (Syzygium aromaticum) entre adultos en Jordania: una encuesta transversal en línea]

Razan I. Nassar1*, Samar Thiab2, Rahma Al-adwan3, Abdullah Aboqubo3, Mohammad Alostath3, Jana Shanteer3, Noor Nassar4, Mohammad T. Alashqar5

1Department of Clinical Pharmacy and Therapeutics, Faculty of Pharmacy, Applied Science Private University, Amman, Jordan.

2Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Applied Science Private University, Amman, Jordan.

3Faculty of Pharmacy, Applied Science Private University, Amman, Jordan.

4Pharmaceutical Procurement, Department of Pharmacy, King Hussein Cancer Center, Amman, Jordan.

5Institute of Therapeutic Innovations and Outcomes, Division of Pharmacy Practice and Science, College of Pharmacy, The Ohio State University, Columbus, Ohio, United States of America.

*E-mail: r_nassar@asu.edu.jo

Abstract

Context: Clove and clove oil are commonly used for culinary and traditional health purposes, although unsafe use and potential interactions remain concerns.

Aims: Knowledge, attitudes, perceptions, and reported patterns of clove use were assessed among respondents in Jordan.

Methods: A descriptive cross-sectional online survey was completed by 384 participants recruited through convenience sampling via Facebook and WhatsApp. The questionnaire was developed after a literature review, assessed for face validity by three academics, and pilot-tested. Internal consistency of the knowledge domain was assessed using Cronbach’s alpha. Descriptive statistics, multiple linear regression, and binary logistic regression analyses were used.

Results: Previous use of clove or clove oil was reported by 229 participants (59.6%). Traditional or cultural practice was the most frequently reported influence on use (56.8% of users). Whole clove was the most common form (89.5%), and toothache or oral pain was the most common indication (89.1%). The mean knowledge score was 5.13 ± 2.85 (observed range, -2 to 10). Female sex (B = 1.445, p<0.001) and health-sector employment (B = 1.567, p<0.001) were associated with higher adjusted knowledge scores. Previous clove or clove oil use was also significantly associated with female sex (OR = 1.889, p = 0.005). Natural remedies were perceived as safer than pharmaceutical treatments by 63.5% of respondents.

Conclusions: Clove use was common in this online convenience sample, but important misconceptions concerning dilution, adverse effects, pediatric safety, and drug interactions were identified. Targeted public education and pharmacist counseling should be evaluated in representative samples.

Keywords: cross-sectional studies; health knowledge, attitudes, practice; Jordan; phytotherapy; Syzygium aromaticum; traditional medicine.

PDF Download

Resumen

Contexto: El clavo de olor y el aceite de clavo se utilizan comúnmente con fines culinarios y en la medicina tradicional, aunque su uso inadecuado y las posibles interacciones siguen siendo motivo de preocupación.

Objetivos: Se evaluaron los conocimientos, las actitudes, las percepciones y los patrones declarados de consumo de clavo entre los encuestados en Jordania.

Métodos: Se realizó una encuesta descriptiva transversal en línea en la que participaron 384 personas reclutadas mediante muestreo por conveniencia a través de Facebook y WhatsApp. El cuestionario se elaboró tras una revisión de la literatura, fue evaluado por tres académicos en cuanto a su validez aparente y se sometió a una prueba piloto. La consistencia interna del dominio de conocimientos se evaluó mediante el alfa de Cronbach. Se utilizaron análisis de estadística descriptiva, regresión lineal múltiple y regresión logística binaria.

Resultados: Un total de 229 participantes (59,6 %) reportaron haber utilizado previamente clavo de olor o aceite de clavo. Las prácticas tradicionales o culturales fueron la influencia sobre el uso reportada con mayor frecuencia (56,8 % de los usuarios). El clavo entero fue la forma más utilizada (89,5 %), y el dolor dental u oral fue la indicación más frecuente (89,1 %). La puntuación media de conocimientos fue de 5,13 ± 2,85 (rango observado: −2 a 10). El sexo femenino (B = 1,445; p<0,001) y el empleo en el sector sanitario (B = 1,567; p<0,001) se asociaron con puntuaciones ajustadas de conocimientos más altas. El uso previo de clavo de olor o aceite de clavo también se asoció significativamente con el sexo femenino (OR = 1,889; p = 0,005). El 63,5 % de los participantes consideró que los remedios naturales eran más seguros que los tratamientos farmacéuticos.

Conclusiones: El uso del clavo de olor fue frecuente en esta muestra de conveniencia reclutada en línea, pero se identificaron importantes conceptos erróneos relacionados con la dilución, los efectos adversos, la seguridad pediátrica y las interacciones farmacológicas. La educación pública dirigida y el asesoramiento por parte de farmacéuticos deberían evaluarse en muestras representativas.

Palabras Clave: conocimientos, actitudes y práctica en salud; estudios transversales; fitoterapia; Jordania; medicina tradicional; Syzygium aromaticum.

PDF Download

https://jppres.com/jppres/pdf/vol14/jppres_14.5.2902.pdf

Citation Format: Nassar RI, Thiab S, Al-adwan R, Aboqubo A, Alostath M, Shanteer J, Nassar N, Alashqar MT (2026) Knowledge, attitudes, perceptions, and use of clove (Syzygium aromaticum) among adults in Jordan: A cross-sectional online survey. J Pharm Pharmacogn Res 14(5): 2902. https://doi.org/10.56499/jppres_14.5.2902
References

Abdel-Qader DH, Albassam A, Ismael NS, Aljamal MS, Chen LC, Mansoor K, Hamadi S, Al Mazrouei N, Al Meslamani AZ (2020) Herbal medicine use in the Jordanian population: A nationally representative cross-sectional survey. J Pharm Pharmacogn Res 8(6): 525–536. https://doi.org/10.56499/jppres20.902_8.6.525

Abdul Ghany B, Qasim HI (2025) Hair growth stimulation in testosterone-induced alopecic mice: A comparative study between topical clove oil 10% topical minoxidil 5%. J Fac Med Baghdad 67(2): 197–203. https://doi.org/10.32007/jfacmedbaghdad2977

Abu Farha R, Yousef A, Gharaibeh L, Alkhalaileh W, Mukattash T, Alefishat E (2021) Medication discrepancies among hospitalized patients with hypertension: Assessment of prevalence and risk factors. BMC Health Serv Res 21: 1338. https://doi.org/10.1186/s12913-021-07349-5

Al Akeel M, Al Ghamdi W, Al Habib S, Koshm M, Al Otaibi F (2018) Herbal medicines: Saudi population knowledge, attitude, and practice at a glance. J Family Med Prim Care 7(5): 865–875. https://doi.org/10.4103/jfmpc.jfmpc_315_17

Al Raish SM, Alsheriafi HN, Alkuwaiti AA, Safi SK, Safi AS (2026) Insights into knowledge, attitudes, and practices of medicinal plant use in the United Arab Emirates: A cross-sectional study. Front Nutr 13: 1755440. https://doi.org/10.3389/fnut.2026.1755440

Alkhamaiseh SI, Aljofan M (2020) Prevalence of use and reported side effects of herbal medicine among adults in Saudi Arabia. Complement Ther Med 48: 102255. https://doi.org/10.1016/j.ctim.2019.102255

Almuziny M (2024) Clove (Syzygium aromaticum) extract has antibacterial and antifungal effects against human scalp microbes. Asian J Biol Life Sci 13(2): 491–496. https://doi.org/10.5530/ajbls.2024.13.61

Carvalho RPR, Ribeiro FCD, Lima TI, Ervilha LOG, de Oliveira EL, Faustino A de O, Lima GD de A, Machado-Neves M (2022) High doses of eugenol cause structural and functional damage to the rat liver. Life Sci 304: 120696. https://doi.org/10.1016/j.lfs.2022.120696

Da Silva JL, Marinho ACT de A, Prazeres LDKT dos, Da Silva TG, Merlo K da C, Costa HBA, Wanderley AG (2019) Reproductive toxicity of eugenol in Wistar rats. Rev Eletron Acervo Saude 11(16): e1864. https://doi.org/10.25248/reas.e1864.2019

Daniel AN, Sartoretto SM, Schmidt G, Caparroz-Assef SM, Bersani-Amado CA, Cuman RKN (2009) Anti-inflammatory and antinociceptive activities A of eugenol essential oil in experimental animal models. Rev Bras Farmacogn 19(1b): 212–217. https://doi.org/10.1590/S0102-695X2009000200006

El Aich FE, Ouazzani C, Laasli SE, Hari A, Er-ramly A, Ballouch E (2025) Ethnobotanical insights into clove (Syzygium aromaticum) usage in Morocco: Perceptions, practices, and knowledge. J Appl Nat Sci 17(4): 1944–1953. https://doi.org/10.31018/jans.v17i4.7056

El Khoury G, Ramadan W, Zeeni N (2016) Herbal products and dietary supplements: A cross-sectional survey of use, attitudes, and knowledge among the Lebanese population. J Community Health 41(3): 566–573. https://doi.org/10.1007/s10900-015-0131-0

El-Dahiyat F, Rashrash M, Abuhamdah S, Abu Farha R, Babar ZUD (2020) Herbal medicines: A cross-sectional study to evaluate the prevalence and predictors of use among Jordanian adults. J Pharm Policy Pract 13: 2. https://doi.org/10.1186/s40545-019-0200-3

Huang WC, Shu LH, Kuo YJ, Lai KSL, Hsia CW, Yen TL, Hsia CH, Jayakumar T, Yang CH, Sheu JR (2024) Eugenol suppresses platelet activation and mitigates pulmonary thromboembolism in humans and murine models. Int J Mol Sci 25(4): 2098. https://doi.org/10.3390/ijms25042098

Jalil B, Naser AY, M Prieto J, Heinrich M (2022) Herbal supplements in Jordan: A cross-sectional survey of pharmacists’ perspectives and knowledge. BMJ Open 12: e057405. https://doi.org/10.1136/bmjopen-2021-057405

Kamatou GP, Vermaak I, Viljoen AM (2012) Eugenol—from the remote Maluku Islands to the international market place: a review of a remarkable and versatile molecule. Molecules 17(6): 6953–6981. https://doi.org/10.3390/molecules17066953

Khader Y, Sawair FA, Ayoub A, Ayoub N, Burgan SZ, Amarin Z (2008) Knowledge and attitudes of lay public, pharmacists, and physicians toward the use of herbal products in North Jordan. J Altern Complement Med 14(10): 1186–1187. https://doi.org/10.1089/acm.2008.0282

Lev E, Amar Z (2002) Ethnopharmacological survey of traditional drugs sold in the Kingdom of Jordan. J Ethnopharmacol 82(2–3): 131–145. https://doi.org/10.1016/S0378-8741(02)00182-4

Massad M, Odeh M, Odeh N, Sarhan LA, Alharahsheh R, Suilik IA, ALFaleh M, Aladli E, Ibrahim A, Serhan HA (2025) Colon cancer general knowledge, attitude and awareness channels: A cross-sectional study. Health Sci Rep 8(4): e70340. https://doi.org/10.1002/hsr2.70340

Neveu V, Perez-Jimenez J, Vos F, Crespy V, du Chaffaut L, Mennen L, Knox C, Eisner R, Cruz J, Wishart D, Scalbert A (2010) Phenol-Explorer: An online comprehensive database on polyphenol contents in foods. Database (Oxford) 2010: bap024. https://doi.org/10.1093/database/bap024

Ridzuan P, Bakim MNM, Baharudin NHC, Masimen MAA, Zulkifli MF, Ismail WIW (2024) Can Syzygium aromaticum and Eucalyptus globulus ease respiratory infection? Asian J Med Health Sci 7(2): 108–122. https://doi.org/10.70672/q2mz5r71

Saleh D, Abu Farha R, Darwish El-Hajji F (2021) Antimicrobial stewardship in community pharmacies in Jordan: Assessing current status. J Pharm Health Serv Res 12(2): 181–187. https://doi.org/10.1093/jphsr/rmaa028

Shan B, Cai YZ, Sun M, Corke H (2005) Antioxidant capacity of 26 spice extracts and characterization of their phenolic constituents. J Agric Food Chem 53(20): 7749–7759. https://doi.org/10.1021/jf051513y

Taneri PE, Akis N, Karaalp A (2021) Herbal product use patterns and possible herb-drug interactions among older adults in Turkey. J Herb Med 29: 100487. https://doi.org/10.1016/j.hermed.2021.100487

Tengku Mohamad TAS, Islahudin F, Jasamai M, Jamal JA (2019) Preference, perception and predictors of herbal medicine use among Malay women in Malaysia. Patient Prefer Adherence 13: 1829–1837. https://doi.org/10.2147/PPA.S227780

Thiab S, Barakat M, Al-Qudah R, Abutaima R, Jamal R, Riby P (2021) The perception of Jordanian population towards concomitant administration of food, beverages and herbs with drugs and their possible interactions: a cross-sectional study. Int J Clin Pract 75(3): e13780. https://doi.org/10.1111/ijcp.13780

Torres-Avilez W, Medeiros PM de, Albuquerque UP (2016) Effect of gender on the knowledge of medicinal plants: systematic review and meta-analysis. Evid Based Complement Alternat Med 2016: 6592363. https://doi.org/10.1155/2016/6592363

Vicidomini C, Roviello V, Roviello GN (2021) Molecular basis of the therapeutical potential of clove (Syzygium aromaticum L.) and clues to its anti-COVID-19 utility. Molecules 26(7): 1880. https://doi.org/10.3390/molecules26071880

Zaidi SF, Saeed SA, Khan MA, Khan A, Hazazi Y, Otayn M, Rabah M, Daniyal M (2022) Public knowledge, attitudes, and practices towards herbal medicines; a cross-sectional study in Western Saudi Arabia. BMC Complement Med Ther 22: 326. https://doi.org/10.1186/s12906-022-03783-y

© 2026 Journal of Pharmacy & Pharmacognosy Research

© 2013-2020 by the authors; licensee JPPRes, Antofagasta, Chile. This journal is an open-access journal distributed under the terms and conditions of the Creative Commons Attribution license-Non Commercial 4.0 international. The content on this site is intended for health professionals. If you are not a health professional, please talk to your doctor about any doubts or concerns regarding your health

Site Update: October 25th, 2026

Made with ♥ by AVAGAX Studio