Many Arabian medicinal plants possessed anticancer activitys by many mechanisms as tested by
different anticancer tests. These plants included: Adonis aestivalis, Ailanthus altissima, Alhagi maurorum,
Allium cepa, Allium sativum, Allium schoenoprasum, Althaea officinalis, Althaea rosea, Ammannia baccifera,
Anagyris foetida, Anchusa italica, Antirrhinum majus, Apium graveolens, Arctium Lappa, Aristolochia
maurorum, Artemisia campestris, Arundo donax, Asclepias curassavica, Asparagus officinalis, Astragalus
hamosus, Bauhinia variegata, Bellis perennis, Betula alba, Bidens tripartita, Brassica rapa, Bryonia dioica,
Bryophyllum calycinum, Caccinia crassifolia, Caesalpinia crista, Calendula officinalis, Calotropis procera,
Canna indica, Capparis spinosa, Capsella bursa-pastoris, Capsicum annuum , Capsicum frutescens, Carthamus tinctorius, Casuarina equisetifolia, Celosia cristata, Chenopodium album, Chrozophora tinctoria, Cicer arietinum, Cichorium intybus, Citrullus colocynthis, Citrus species, Clerodendron inerme, Clitoria ternatea,
Convolvulus arvensis, Convolvulus scammonia, Corchorus aestuans, Corchorus capsularis, Coriandrum
sativum, Coronilla scorpioides, Coronilla varia, Cotoneaster racemiflora, Crocus sativus, Cuminum cyminum,
Cupressus sempervirens, Cuscuta planiflora, Cydonia oblonga, Cynodon dactylon, Cyperus rotuntdus,
Dactyloctenium aegyptium, Datura metel , Daucus carota, Delphinium brunonianum, Desmostachya bipinnata,
Dianthus caryophyllus, Digitalis lanata , Digitalis purpurea, Dodonaea viscosa, Lablab purpureus, Echinochloa
crus-galli, Equisetum arvense, Erigeron canadensis, Erodium cicutarium, Eryngium creticum, Eucalyptus
species, Eupatorium cannabinum, Euphorbia hirta, Euphorbia macroclada, Fagopyrum esculentum, Ficus carica , Ficus cunia and Ficus religiosa. The current paper will discuss the anticancer effects of some medicinal plants as a first part of this review.