Review Article

Candidate Anti-COVID-19 Medicinal Plants from Ethiopia: A Review of Plants Traditionally Used to Treat Viral Diseases

Table 1

The medicinal plants used to treat viral diseases in different parts of Ethiopia.

No.Scientific nameFamilyLocal nameParts used and preparation methodRADTRef.

1Acacia abyssinica Hochst. ex Benth.FabaceaeMemona (Tig)Crush the bark and apply on the affected partDermalH. zoster[35]
2Acacia etbaica Schweinf.FabaceaeSeraw (Amh)Crushed barkOralWart[36]
3Acacia nigraFabaceaeTikur grar (Amh)Crush or pound and squeeze the leaf and apply on allergic skinDermalH. zoster[37]
4Acanthus polystachyusAcanthaceaeKucheshile (Amh)Crush the root and pound and give with waterOralRabies[36, 38]
5Acokanthera schimperi (A. DC.) Schweinf.ApocynaceaeMeriz (Amh)Roots are burned on fire and fumigatedDermalHepatitis[38, 39]
6Allium sativumAlliaceaeNechsenkret (Amh)(i) Crushed rhizomes are pounded and eaten with honey
(ii) Crush the bulb and drink with water
OralInfluenza virus[36, 38]
(i) Bulb is pounded and mixed with meat soup and used as a drink
(ii) Boiled bulb vapor is inhaled orally and nasally
(iii) Cloves ground up and mixed with honey, take first thing in the morning on an empty stomach
(i) Oral
(ii) Oral and nasal
(iii) Oral
C. cold[4043]
7Allium cepaAlliaceaeQeY shikurt (Amh)Eat the part of the bulb with other foodsOralRabies[35]
Crush the bulb and drink with waterOralHSV[44]
8Aloe macrocarpa Tod.AloaceaeEret (Amh)Leaf of A. macrocarpa is powdered and mixed with honeyOralWart[45]
9Amaranthus hybridus Linn.AmaranthaceaeTenbelel (Amh)Crush the fruit and leaf of Amaranthus hybridusOralHepatitis[36]
10Argemone mexicana L.PapaveraceaeYahyaeshoh (Amh)(i) Crush the leaf
(ii) Crush the root and give with water
OralInfluenza, Rabies[36, 38]
11Artemisia afra Jack. ex Willd. and Artemisia annua L.AsteraceaeChikugn (Amh)Grind leaves and apply topicallyDermalSmallpox[40]
Crushed and powdered leafNasal, oralInfluenza[36]
12Azadirachta indica. A. Juss.MeliaceaeNeem (Amh)LeavesOralHIV-1[46]
13Bersama abyssinica BoyleMelianthaceaeAzamer (Amh)Bark/leaves/rootsRabies, HIV-1[47]
14Brassica carinata A. Br. HerbBrassicaceaeGomen (Amh)The dried leaf was powdered and mixed with water then drunkOralC. cold[48]
15Brucea antidysenterica J. F. MillSimaroubaceaeWaginos (Aballo)(Amh)Fresh parts of the stem are boiled in water and the steam is inhaled through the mouth and noseOral & nasalHepatitis[49]
Squeeze the whole part of the plant and bake with teff flour and give for 3 days (together with Croton macrostachyus and Rumexnervosus)OralRabies[50]
16Calpurnia aurea (Ait.) Benth.FabaceaeDigita (Amh)Crush the seeds of Calpurnia aurea and mix with waterOrallyRabies[51]
17Camellia sinensisTheaceaeShay kitel (Amh)Drink the leaves with teaOralHBV, HCV, influenza, HIV, BCV[52, 53]
18Capsicum annuum L.SolanaceaeBerbere (Amh)Pounded being mixed with the leaf of V. sinaiticum, O. quadripartita, C. aurea (concoction), then bandage on the woundDermalH. zoster[37]
19Carica papaya L.CaricaceaePapaya (Amh)Fresh fruit and leaf pounded and crushed, add waterOralH. zoster,[37, 44]
20Carissa edulis Vahl.ApocynaceaeAgam (Amh)The root is powdered and mixed with foodOralRabies[54]
21Cayratia ibuensis (Hook.f.) Suess.VitaceaeUdusalim Rumiyi (Oro)The roots crushed and pounded, then boiled and drink 2-3 cups of coffee in the morning5–7 of tea spoons drink (oral)Hepatitis[55]
22Centella asiatica L.ApiaceaeYeait joro (Amh)A quarter of a finger-sized root is ground, mixed with water, filtered, and taken orallyOralRabies[39]
23Citrus aurantium L.RutaceaeBahir Lome (Amh)Squeezing fruit (juice)OralC. cold[43]
24Citrus limon (L.) Burm. f.RutaceaeLome (Amh)Squeezed fruit (juice)OralC. cold[36]
25Clematis hirsute Perr. & Guill.RanunculaceaeHareg (Tig)Burn leaves in oven with leaves of Dodonaea angustifolia, grind, mix with butter and apply on the affected part.DermalH. zoster[35]
26Clutia abyssinica Jaub. & Spach.EuphorbiaceaeTewshealalito (Tig) Fiyle feji (Amh)Dry and mix leaves with dried leaves of Calpurnia aurea and Datura stramonium, grind, add butter, and spread the paste on the affected part
(i) Crush the root and boiled with water (Decoction)
Dermal
Oral
H. zoster, hepatitis[35, 37]
27Coffea arabica L.RubiaceaeBunna (Amh)Boil the leaf, decant then drink the juiceOralC. cold[38]
28Combretum collinumCombretaceaeAbalo (Amh)The seed of Combretum collinum with the seed of Solanumda syphyllum are crushed together powdered, mixed with “tella” and drunk for 3 daysOralRabies[50]
29Coriandrum sativumApiaceaeDimblal (Amh)Potential anti-COVID-19[56]
30Cordia africanaBoraginaceaeWanza (Amh)Boiled with sorghum (decoction) and drinkingOralHepatitis[37]
31Crinum abyscinicum Hochst. ex A. Rich.AmaryllidaceaeYejib shinkurt (Amh)Bulb of Crinum abyscinicum is used to treat rabiesOralRabies[57]
32Crotalaria incana L.FabaceaeAtarii Kuruphee (Oro)Sap from the whole part of the plant is directly creamed on affected areaDermalHepatitis[41]
33Croton macrostachyus Del.EuphorbiaceaeBisana (Amh)(i) Shoots are crushed with water, filtered and the solution is taken orally (for hepatitis)
(ii) The fresh root bark is crushed, pounded, mixed with water, and given orally (for rabies)
OralHepatitis, rabies[39, 44, 51]
34Cucumis ficifolius A. Rich.CucurbitaceaeYemidir Embuay (Amh)Crushed fresh root with water fermented for 3 days is taken with honey early morning before breakfast orally until the cureOralRabies[49]
35Cucurbita pepo L.CucurbitaceaeHamham (Tig)Fresh leaf boiled with water and given orallyOralInfluenza[44]
36Curcuma longaZingiberaceaeErd (Amh)HBV, HCV[58]
37Cussonia ostinii Chiov.AraliaceaeHarfattu (Oro)Bark (root) of Cussonia ostinii, leaf Asplenium monathes and the leaf of Calpurnia subdecandra were pounded together, and 2 cups were given to cattleOrallyHepatitis[41]
38Cyphostemma adenocaula (A. Rich.)VitaceaeAsserkush (Amh)The root was boiled with milk and filtered and the filtrate was taken in an empty stomach full of a coffee cup daily for 3 consecutive daysOrallyRabies[50]
39Datura stramonium L.SolanaceaeAtsefaris (Amh)Leafy stem is squeezed and its drop prepared with butterDermalWart[35]
Leafy stem is squeezed and its drop prepared with butterDermal creamWart[36]
Crushed and homogenized leaves drunk with waterOralRabies[50, 59]
Dried leaves of the plant and Calpurnia aurea and Clutia abyssinica are ground, mix powder with butter, and apply on the affected partDermalH. zoster[35]
40Diplolophium africanum Turcz.ApiaceaeZegerawta (Amh)Pound the root and give with waterOrallyRabies[38]
41Dipsacus pinnatifidus Steud. ex A. Rich.DipsacaceaeFereze ng/kelem (Amh)Pound the leaf and give with waterNasalRabies[38]
42Dodonaea angustifolia L.f.SapindaceaeKitkita (Amh)Dry the leaf of the plant alone or mix with the leaf of Clematis hirsuta on a hot stove, grind, add butter and rub the affected partDermalH. zoster[35]
43Dorstenia barnimiana Schweinf.MoraceaeWork Bemeda (Amh)Root powder with shimmed milk or nug is taken orally early morning until a cureOrallyRabies[49]
Root powder with shimmed milk or nug is taken orally early morning until a cureOrallyHepatitis[49]
44Dregea rubicunda Schum.AsclepiadaceaeKuandira (Amh)Crush and drink with milkOrallyRabies[38]
45Dregea schimperi (Decne.) Bullock.AsclepiadaceaeShanqoq (Tig)Crush and drink the fluidOrallyRabies[35]
46Echinops amplexicaulis Oliv.AsteraceaeKosorru Hare (Oro)The root of Echinops amplexicaulis is dried, powdered, and mixed with water The concoction is given to cattleOrallyHepatitis[41]
47Ekebergia capensisMeliaceaeThe leaf of Ekebergia capensis is crushed and add waterOrallyC. cold[36]
48Eucalyptus globulus Labill.MyrtaceaeNech bahirzaf (Amh)Boil and fumigate with the fumeNasal, oral, and dermalC. cold[36]
(i) Leaf of Eucalyptus globulus is chopped and boiled; the steam bath is taken by humans; vapor inhaled orally and nasally
(ii) Boil Eucalyptus and Damakasse in water and inhale
(iii) Leaf of E. globulus is boiled in water
Nasal, orallyInfluenza[35, 4042, 45]
49Euphorbia abyssinica G.F.Gmel.EuphorbiaceaeKulkual (Amh)Stems are burned on fire and fumigatedDermalHepatitis[39]
Mix the latex of Euphorbia abyssinica with milk and drink itOrallyRabies[38]
50Ficus sycomorus L.MoraceaeSholla (Amh)(i) The sap of Ficus sycomorus is creamed directly on the skin (for hepatitis)
(ii)The bark of Ficus sycomorus and root of Prunus africana are powdered together and backed with teff flour and eaten (for rabies)
Dermal OralHepatitis, rabies[41, 45]
51Ficus sp.MoraceaeWarka (Amh)The stem bark and the latex are mixed with Phytolacca dodecandra (leaf) and givenOralRabies[51]
52Gnidia stenophylla Gilg.TrymalaceaeKatarichaa (Oro)The decoction of the root is taken with goat milk1 teaspoon drink orallyHepatitis[55]
53Hypoestes forskaolii (Vahl) R.Br.AcanthaceaeGirbia (Tig)A bunch of leaves was collected from 7 different sites, mixed with 10 tin cans of water, stored for 7 days, and washed for 7 consecutive daysDermalH. zoster[60]
54Jasminum abyssinicum Hochst.OleaceaeTembelel (Amh)Pounded being mixed with the leaf of V. sinaiticum, O. quadripartita, C. aurea, S. uliginosa, D. stramonium, and P. schmperiDermalH. zoster[37]
55Jatropha curcas L.EuphorbiaceaeYesudan-gulo (Amh)Crush the seed of Jatropha curcas mixed with waterOrallyRabies[51]
56Justicia schimperiana (Hochst. ex Nees) T. AndersAcanthaceaeSmiza (Amh)(i) Root and leaf of Justica schimperiana are pounded together and mixed with water and 2-3 cups of tella are used as a drink
(ii) Seed of J. Schimperiana is crushed and mixed with water and filtered
(iii) The Justicia schimperiana and Brucea antidysenterica leaves are used to treat rabies
OralRabies[36, 41, 45, 59, 61]
Sniff unprocessed or after rubbingNasalC. cold[36]
(i) Juice of seven shoot meristems that can be mixed with fresh water and drink a cup of the mixture
(ii) Juvenile leaf of Justicia schimperiana boiled with milk (decoction)
OrallyHepatitis[37, 62]
57Laggera integrifolia Sch. Bip. ex A. RichAsteraceaeGimmie (Amh)The leaf is inhaled sometimes through the noseNasal (nostril)C. cold[63]
58Lens culinaris Medic.FabaceaeMisir (Amh)Dry seeds are ground, powder is soaked in water, and cream is smeared on the affected partDermalH. zoster[39]
59Lippia abyssinicaLamiaceaeKoseret (Amh)NasalC. cold[59]
60Lobelia rhynchopetalum Hemsl.LobeliaceaeJibara (Amh)Roots are ground, mixed with milk, and solution drunk for five daysOrallyRabies[39]
61Lycopersicon esculentum (L.) Mill.SolanaceaeTimaatima (Oro)Fresh fruit put in the fire and eaten when getting hot in order to get relief from the common coldOralC. cold[48]
62Mangifera indicaAnacardiaceaeMango (Amh)Bark/leavesOralC. cold, HSV-1/2[46]
63Millettia ferruginea (Hochst.) Bak.FabaceaeBirbira (Amh)Heat stick, then touch their body with hot partDermalRabies[38]
64Moringa borziana Mattei MaweMoringaceaeTamergnaw ketel (Shiferaw) (Amh)Leaf chewingChewing OralC. cold[36]
65Musa spp.MusaceaeMuz (Amh)SARS-CoV-2, influenza[64, 65]
66Myrica salicifolia Hochst. ex A. Rich.MyricaceaeShinet (Amh)Crush, powder, then sniffNasalC. cold[38]
67Nicandra physalodes (L.) GaertnSolanaceaeHawwixii (Oro)Nicandra physalodes (L.) Gaertn roots are pounded and mixed with cold water; 2–4 cups of tella are used as a drinkOralHepatitis[41]
68Nicotiana tabacumSolanaceaeTamiba (Had)Dry leaves are pounded and powdered, then drunk or smelled through the nose of humansNasalC. cold[43]
69Nigella sativaRanunculaceaeTikur Azmud (Amh)Fried seeds wrapped in a piece of cloth and sniffed three times daily, wrap in small leaf, stick up noseOrally NasalC. cold[40, 62]
70Ocimum basilicum L. HerbLamiaceaeBessobla (Amh)Fresh leaves together with the root of Aloe macrocarpa concocted together and drink the solutionOralFlu, CVB1[48]
71Ocimum lamiifolium Hochst. ex Benth.LamiaceaeDamakassie (Amh)Crushed and mixed/concocted/with coffee and takeOrallyC. cold[59]
(i) Squeeze leaves and drink the juice with coffee, or apply the rubbed leaves into the noseNasalInfluenza and acute viral infection[42, 66]
72Ocimum urticifolium Roth.LamiaceaeDama kesie (Amh)Boil with tea and drinkOrallyC. cold[38]
73Olea europaea subsp. cuspidateOleaceaeWeyra (Amh)Boiled, adding salt for the night and isolate the residue (decoction)OrallyHepatitis[37]
74Olinia rochetiana A. JussOliniaceaeNoole (Sid)The leaf is heated slightly, rubbed by the hands, and then inhaled through nostrilsNasalViral common cold[66]
75Osyris quadripartita Decn.SantalaceaeKeret (Amh)Dried and pounded then 2 spoonsful powder is mixed with a cup of water, drink for 3 consecutive daysOrallyHepatitis[37]
Pounded being mixed with the leaf of C. annuum, V. sinaiticum, C.aurea, J. abyssinicum (concoction)DermalH. zoster[37]
76Otostegia integrifolia Benth.LamiaceaeTunjut (Amh)Smoking and fumigating the houseSmoking, oralC. cold[36, 38]
77Piper nigrumPiperaceaeKundo berbere (Amh)VSV, PIV, CVB3[67]
78Phaseolus vulgarisFabaceaeBakela (Amh)HIV-1, RSV, and HSV-1[68, 69]
79Phytolacca dodecandraPhytolaccaceaeEndod (Amh)(i) Root is crushed and pounded, mixed with water; one-third of the tella cup is given to humans (liver problem); Phytolacca dodecandra root is crushed and pounded, mixed with water; one-third of a cup is given to humans
(ii) Dried root of Phytolacca dodecandra powder and one-two cups of domestic alcohol (malakia) are taken orally (for rabies)
(iii) Chopped root and leaves mixed with honey are given orally (for rabis)
(iv) Fresh root of Phytolacca dodecandra is pounded, mixed with water, one arake glass of the solution is given for 7–10 days (for humans)
Oral(i) Liver problem (hepatitis), (ii) Rabies[41, 42, 48, 70]
(v) Squeeze and apply on the wounded partDermalH. zoster[37]
Juice extracted by pounded fresh root mixed with milk of similar cow and calf Roots are chewed and fluid swallowed; as an antidote, Guizotia abyssinica solution is taken orallyOrallyRabies[39]
Juice of crushed fresh root taken with skimmed milkOralRabies[44]
Juice of crushed fresh root taken with skimmed milkOrallyHepatitis “wef beshita’[49]
80Plantago lanceolata L.PlantaginaceaeKorxobi (Oro)(i) The leaf is squeezed and apply on the affected dermal part
(ii) The squeezed leaf is pasted with butter and made to ointment
DermalWart, herpes wounds[54]
81Podocarpus falcatusPodocarpaceaeBirbirsa (Oro)Fresh stem barks boiled and filtered and then drunk in the middle of the night for three days; dry stem bark crushed and pounded then parted on the woundOralJaundice (hepatitis) or rabies[43]
82Podocarpus graciliorPodocarpaceaeZigba (Amh)Combined Zigba (Podocarpus gracilior) of Dokuma (Syzgium guineense, listed next) in a cold maceration; drink on an empty stomach first thing in the morning, this induces vomiting which is thought to help treat Yellelitwofe (hepatitis)OralYellelito wofe (hepatitis)[40]
83Polygala obtusissima Chod.PolygalaceaeCalmala (Afa)The fresh leaves are pounded, kept in a handkerchief, and inhaledInhalation (nasal)C. cold[71]
84Prunus dulcisRosaceaeLewuz (Amh)Drink with teaOralHSV-1/ 2[72]
85Rhus natalensisAnacardiaceaeDebobosha (Amh)Pounded being mixed with J. abyssinicum, D. stramonium, and S. nigrum (concoction); wash the entire body first and apply the remedy on the woundDermalH. zoster[37]
86Ricinus communis L.EuphorbiaceaKabosimbiro (Oro)Fresh leaves are crushed and mixed with water and one cup of tea is taken for 3 consecutive daysOrallyRabies[50]
(i) The root is pounded, well-spiced, and mixed with food
(ii) Freshly pounded and squeezed leaves of Ricinus communis L. with milk for treating patients of rabies
OralRabies[54, 73]
87Rosa abyssinicaRosaceaeQega (Amh)OralEnteric coronavirus.[74]
88Rosmarinus officinalisLamiaceaeTibs kitel (Amh)RSV-A and B[75]
89Rumex abyssinicusPolygonaceaeMekmoko (Amh)Root decocted, drunk or chewedOralHepatitis[40]
90Rumex crispusPolygonaceaeEnbacho (Amh)Roots chewed and juice swallowedOralHepatitis[40]
91Ruta chalepensis L.RutaceaeTena adam (Amh)Leaf of Ruta chalepensisis pounded with the bulb of Allium sativum mixed with soup and used as a drinkOralInfluenza[41]
92Saccharum officinarum L. HerbPoaceaeShankora ageda (Amh)Fresh steam is put in the fire and eaten when gets hot to get relief from the common coldOralC. cold[48]
93Salix subserrata WilldSalicaceaeCrushed leaves of Salix subserrata Willd. and Afrocarpus falcatus (Thunb.) C. N. Page was also used in fresh form, mixed with water and milk, to treat rabiesOralRabies[73]
94Sesamum indicumPedaliaceaeSelit (Amh)two drops of sesame oil in each nostril each morning are suggested to prevent COVID-19NasalCOVID-19CCRH, 2020
95Schinus molleAnacardiaceaeSelit (Amh) Kendo berberie (Amh)Pounded Crushed FruitOralCough (C. cold)[36]
Crushed fresh leaves of Schinus mole with waterOralH. zoster[44]
96Solanecio gigas (Vatke) C. JeffreyAsteraceaeBoz (Amh)Leaves are collected from seven different areas, grounded with Guizotia abyssinica seeds, mixed with water and solution have taken orallyOrallyHepatitis[39]
97Sorghum bicolor (L.) Moench.PoaceaeBoz (Amh)Boil it in water and wash the body with itDermalH. zoster[35]
98Spinacia oleraceaAmaranthaceaeKeyh leqa (Tig)SARS-CoV-2[10]
99Stephania abyssinica (Dillon & A. Rich.) Walp.MenispermaceaeKosta (Amh)Crushed and given with milk and waterOrallyRabies[38]
100Syzygium aromaticumMyrtaceaeChewchawit (Amh)HSV-1 and 2[9]
101Trichilia dregeanaMeliaceaeKirnfud (Amh)Soaked, cooked, and put on tooth surfacedermalWound Warts[36]
102Triumfetta heterocarpa Sprague and Hutch.TiliaceaeAnunu (Oro)The crushed fresh root is mixed with water and taken orally without foodOrallyHepatitis[49]
103Verbascum sinaiticum Benth.ScrophulariaceaeYelam tut (Amh)Roots are burned on fire and the smoke inhaledNasalHepatitis[39]
104Vitis viniferaVitaceaeQetetina (Amh)FruitsOralHSV-1, PIV[8]
105Vernonia amygdalina Del.AsteraceaeWeyin fire (Amh)Leaves/rootsOralhepatitis, H. zoster, HSV, cough, HIV[46]
106Warburgia ugandensis SpragueCanellaceaeBefit (Oro)The smoke of 2-3 stick vascular part is inhaled to relieve coughNasalCough (C. cold)[55]
107Withania somniferaSolanaceaeGiziewa or Kumo (Amh)IBDV, HSV-1[76]
Fresh leaf and root will be crushedOrallyHepatitis[36]
Leaf and root crushed and drunk after boiling, powdered, juiced and drunk for 4 days, squeezed with leavesOralCough (C. cold)[36]
108Ximenia americana L.OleaceaeEnkuay (Amh)Soaking bark in water and the water is taken orallyOrallyRabies[49]
109Zehneria scabra (l.f.) SondCucurbitaceaeQorii Sinbiraa (Oro)The pounded root of Zehneria scabra is concocted with the pounded root of Ricinus communis One feast of the pond is given to cattle and pack animalsOralRabies[41]
110Zingiber officinale Roscoe.ZingiberaceaeZinjibile (Amh)The stem is pounded well and boiled with water and drinkOrally, nasalInfluenza[36, 37, 45]
2–5 medium roots crushed and boiled with tea or water and then takenOralCough and c. cold[43, 55]
111Ziziphus abyssinica Hochst. ex A. Rich.RhamnaceaeKurkura (Amh)Fresh leaves and root are crushed and mixed with water and taken orallyOrallyHepatitis[49]

Notes: H. zoster = herpes zoster; C. cold = common cold; BCV = bovine coronavirus; HSV-1 = herpes simplex virus type 1; CVB1 = Coxsackie B virus type 1; IBDV = infectious bursal disease virus; RA = route of administration; DT = disease treated; Amh = Amharic; Oro = Oromo; Tig = Tigrinya; Afa = Afar; Had = Hadiyya; Sid = Sidaamu-afoo.