| Cactus grandiflorus Tr | also Cereus grandiflorus | A |
| Cadmium Metallicum | Cadmium metal | F |
| Cadmium Sulphuratum | Cadmium sulphide | F |
| Cadmium Sulphuricum | Cadmium sulphate | F |
| Caffeinum | Caffine | F |
| Caisse Formula | Any part | F |
| Calabar bean | also Physostigmatis | A |
| Caladium seguinum | Fresh plant | A |
| Calamus Tincture | Any part | E |
| Calcarea Acetica Hahnemanni | Calcium acetate Hahn | A |
| Calcarea Arsenicica | Calcium arsenate | F |
| Calcarea Bromata | Calcium bromide | F |
| Calcarea Carbonicum Hahnemanni | Inner part of oyster shell | F |
| Calcarea Caustica | Calcium hydroxide | F |
| Calcarea Fluorica | Calcium fluoride | F |
| Calcarea Hypophosphorosa | Calcium hypophosphite | F |
| Calcarea Iodata | Calcium iodide | A |
| Calcarea Muriatica | Calcium chloride | A |
| Calcarea Oxalica | Calcium oxalate | F |
| Calcarea Phosphorica | Calcium phosphate | F |
| Calcarea Phosphoricum | Calcium hydrogen phosphate | F |
| Calcarea Sulphurica | Calcium sulphate | A |
| Calea zacatechichi Tr | Whole fresh plant | E |
| Calendula officinalis Tr (Marigold) | Fresh aerial parts | A |
| Calendula tincture | Any part | A |
| Callicarpa pedunculata | Leaves | E |
| Calluna vulgaris Tr (Heather) | Fresh aerial parts | A |
| Calotropis gigantea Tr | Root | A |
| Caltha palustris Tr | Whole plant | A |
| Calumba | also Jateorhiza palmata | E |
| Camelia sinensis | also Green Tea | E |
| Camphor Compound tincture | Any part | A |
| Camphor Compound tincture with Glycerin | Any part | A |
| Camphor Compound tincture without aniseed | Any part | A |
| Camphor Compound tincture without opium | Any part | A |
| Camphora Tr | Camphor | E |
| Camphora Monobromata | Camphor monobromide | F |
| Camphorodyne | Any part | A |
| Camphree Eau de Vie | Any part | A |
| Canchalagua Tr | Any part | A |
| Canella alba tincture | Any part | A |
| Canna angustifolia Tr | Leaves | A |
| Cannabis indica Tr | Flowering tops | A |
| Cannabis Fluid extract | Any part | A |
| Cannabis sativa Tr | Flowering tops | A |
| Cannabis tincture | Any part | A |
| Cantharidis tincture | Any part | A |
| Cantharidin tincture | Any part | A |
| Cantharidini Lotion | Any part | F |
| Cantharidis Acetum tincture | Any part | F |
| Cantharis | (see Lytta vesicatoria) | A |
| Capsella bursa-pastoris | Dried aerial parts | A |
| Capsici Alk tincture | Any part | F |
| Capsicum annuum | Chilli, Dried ripe fruit | E |
| Capsicum tincture | Any part | E |
| Caraway Conc. Infusion | Any part | E |
| Caraway Water | Any part | F |
| Carbenia benedicta tincture | also Cnicus benedicta | A |
| Carbolic Acid Tr | Any part | A |
| Carbon Bisulphide Solution | Carbon disulphide | A |
| Carbo Animalis Tr | Animal charcoal | F |
| Carbo Vegetabilis Tr | Vegetable charcoal | F |
| Cardamoms tincture | Any part | E |
| Cardiospermum halicacabum | Flowering aerial parts | E |
| Carduus benedictus | Whole flowering plant | A |
| Carduus marianus Tr (Mary Thistle) | Flowering plant or seed | A |
| Carlina acaulis | Root tincture | A |
| Carminative tincture | Any part | A |
| Carob | also Ceratonia siliqua | F |
| Carpesium abrotanoides | Herb tincture | E |
| Carrageen | also Chondrus crispus | A |
| Carthamus tinctorius (Safflower) | Flowers tincture | E |
| Carui Aqua | Any part | F |
| Carui Spirit | Any part | F |
| Carum carvi Tr | Dried ripe fruits | E |
| Carya alba Tr | Nuts | A |
| Cascara amarga (Picramnia Bark) | Fluid extract | A |
| Cascara sagrada tincture | Any part | A |
| Cascarilla tincture | Any part | E |
| Cassia angustifolia | also Senna | A |
| Cassia senna Tr | Senna, dried leaves | A |
| Cassiae Aqua | also Cinnamon water | F |
| Cassiae Spirit | Any part | F |
| Cassiae tincture | Any part | F |
| Castanea sativa | Sweet Chestnut | E |
| Castanea vesca Tr | Fresh leaves | A |
| Castella texana Tr | Bark and branches | A |
| Castor tincture | Any part | A |
| Castor Oil Aromatic | Any part | A |
| Castoreum | Beaver castor | E |
| Catechu tincture | Any part | E |
| Cat’s Claw | also Uncaria tormentosa | E |
| Catuaba | also Anemopaegma glaucum | F |
| Caulophyllum and Pulsatilla tincture | Any part | A |
| Caulophyllum thalictroides Tr | Fresh root | A |
| Causticum Hahnemanni Tr | Any part | A |
| Ceanothus americanus Tr | Fresh leaves | A |
| Cecropia mexicana Tr | Fresh young leaves | A |
| Cedron Tr | Dried seed | A |
| Celandine | also Chelidonium majus | A |
| Celastrus scandens (American Bittersweet) | Root tincture | A |
| Celery | also Apium graveolens | A |
| Celloidin Solution | Any part | A |
| Centaurea cyanus | also Cornflower | E |
| Centaurea nigra (Knapweed) | Herb Liquid extract | A |
| Centaurium tincture | also Erythraea centaurium | A |
| Centaurium umbellatum | Any part | A |
| Centaury Liquid extract | Any part | A |
| Centella asiatica Tr | also Gotu Kola | A |
| Centruroides elegans | Scorpion sting and venom | A |
| Cephaelis acuminata | also Cephaelis ipecacuanha | A |
| Cephaelis ipecacuanha Tr | Dried underground parts | A |
| Cerasi Nigra Succus | Any part | F |
| Cerasus virginiana Tr | Fresh inner bark | A |
| Ceratonia siliqua | Any part | F |
| Cereus bonplandii Tr | Fresh stems | A |
| Cereus grandiflorus | also Cactus grandiflorus | A |
| Cerium Oxalicum | Cerium oxalate | F |
| Cetraria islandicia Tr | Lichen | A |
| Chaenomeles sinensis | Fruit tincture | E |
| Chalcosine | Chalcosite natural mineral | F |
| Chamaelirium luteum (Helonias) | Roots | A |
| Chamaelirium nobile | Flowerheads tincture | E |
| Chamomile tincture | also Chamaemelium nobile | E |
| Chamomilla recutita Tr | also Matricaria recutita | A |
| Chaparral | also Larrea mexicana | F |
| Cheiranthus tincture | Any part | A |
| Cheken Liquid Extract | also Eugenia chequen | A |
| Chelidonium majus Tr | Whole plant | A |
| Chelone glabra Tr (Balmony) | Whole plant | A |
| Chenopodium ambrosioides Tr | Seed | A |
| Chenopodium anthelminticum Tr | Fresh plant | A |
| Chenopodium vulvaria | also Chenopodium oldium | A |
| Cherry syrup | Any part | F |
| Chervil | also Anthriscus cerefolium | F |
| Chickweed | also Stellaria media | A |
| Chicory Liquid Extract | Any part | E |
| Chilli | also Capsicum annuum | E |
| Chimaphila umbellata Tr | Fresh aerial, flowering parts | A |
| Chininum Arsenicicum | Quinine arsenate | F |
| Chininum Arsenicosum | Quinine arsenite | F |
| Chininum Muriaticum | Quinine hydrochloride | F |
| Chininum purum | Quinine | F |
| Chininum Sulphuricum | Quinine sulphate | A |
| Chionanthus virginica Tr | Fresh bark | A |
| Chiretta | also Swertia chirata | E |
| Chives | also Allium schoenoprasum | F |
| Choralamide Elixir | Any part | A |
| Chloramide Compound Mixture | Any part | A |
| Chlorinum | Chlorine | F |
| Chlorodyne | Any part | A |
| Chlorodine sine morphine | Any part | A |
| Chloroform Aconite | Any part | A |
| Chloroform Belladonna | Any part | A |
| Chloroform Compound tincture | Any part | A |
| Chloroform Compound inhalation | Any part | A |
| Chloroform and Morphine tincture | Any part | A |
| Chloroform spirit | Any part | E |
| Chloroform Water Concentrate | Any part | E |
| Cholesterin | Cholesterol | A |
| Chondrus crispus Thallus tincture | Irish Moss | A |
| Chrysanthemum cinerariaefolium | Flowers tincture | A |
| Chrysanthemum indicum | Flowers tincture | E |
| Chrysanthemum leucanthemum (Oxeye Daisy) | Herb tincture | A |
| Chrysanthemum morifolium | Flowers tincture | E |
| Chrysanthemum parthenium | also Tanacetum parthenium | A |
| Chrysanthemum vulgare | Any part | E |
| Cibotium barometz | Rhizome tincture | A |
| Cicely Sweet | also Myrrhis odorata | E |
| Cichorium intybus Tr | Chicory root | E |
| Cicuta maculata Tr | Fresh root | A |
| Cicuta virosa Tr | Fresh root | A |
| Cimex lectularius Tr | Any part | A |
| Cimicifuga foetida | Any part | A |
| Cimicifuga tincture | Any part | A |
| Cimicifuga racemosa Tr | Fresh rhizome and roots | A |
| Cina Tr | (see Chenopodium ambrosioides) | A |
| Cinchona calisaya | Bark tincture | E |
| Cinchona ledegeriana | Any part | E |
| Cinchona officinalis Tr | Bark | A |
| Cinchona succiruba Tr | Bark | A |
| Cinchona tincture | Any part | E |
| Cinchoma (Yellow) tincture | Any part | A |
| Cineraria Maritima | Dried Juice tincture | A |
| Cinnabaris Tr | Natural mineral | F |
| Cinnamomum camphora tincture (Camphor) | Any part | A |
| Cinnamomum zeylanicum Tr | Inner bark | E |
| Cinnamon Compund | Any part | A |
| Cinnamon Essence | Any part | F |
| Cinnamon Liquid extract | also Cinnamon zeylanicum | E |
| Cinnamon Spirit | Any part | F |
| Cinnamon Tincture | Any part | E |
| Cinnamon Water | Any part | F |
| Cirsium arvense Tr | Whole plant | A |
| Cirsium japonicum (Japanese Thistle) | Root tincture | E |
| Cissampelos Liquid extract | Any part | A |
| Cissus tincture (American Ivy) | Any part | A |
| Cistanche deserticola | Any part | E |
| Cistus canaensis Tr | Whole fresh plant | A |
| Citrullus colocynthis (Bitter Apple) | Any part | A |
| Citrus aurantium (Bitter Orange) | Any part | F |
| Citrus sinensis | also Orange peel | F |
| Citrus limonum | also Lemon | F |
| Citrus medica tincture (Lime) | Any part | F |
| Citrus reticulata tincture (Mandarin Orange) | Any part | F |
| Cleavers | also Galium aparine | A |
| Clematis armandi | also Clematis chinensis | E |
| Clematis chinensis | Roots tincture | E |
| Clematis recta Tr | Fresh aerial parts | A |
| Clematis vitalba | Any part | E |
| Clover tincture | Any part | E |
| Cloves Liquid Extract | Any part | E |
| Cloves Spirit | Any part | F |
| Club Moss Liquid Extract | also Lycopodium | E |
| Cnicus benedictus Tr | Fresh aerial parts | A |
| Cnidium monnieri | Fruit tincture | E |
| Coal Tar Solution | Any part | A |
| Cobaltum Metallicum | Cobalt metal | F |
| Cobaltum Nitricum | Cobalt nitrate | F |
| Coca | Any part | E |
| Cocaine and Mercuric Chloride | Oily Eye drops | A |
| Cocaine eye drops | Any part | A |
| Cocaine oleinate | Any part | A |
| Cocainum Muriaticum | Cocaine hydrochloride | F |
| Cocci tincture | also Cochineal | F |
| Cocculus indicus Tr | Seeds | A |
| Coccus Cacti Tr | Cochineal insect | F |
| Cochineal tincture | Any part | F |
| Cochlearia tincture | Any part | E |
| Cochlearia armoracia Tr | Horseradish root | E |
| Cochlearia officinalis Tr | Fresh aerial parts | E |
| Cocillana | also Guarea rusbyi | A |
| Cocoa - Powder | also Theobroma cacao | E |
| Cod Liver Oil emulsion | Any part | A |
| Cod Liver Oil with Irish Moss | Pancreatic emulsion | A |
| Codeine syrup | Any part | A |
| Codeinum | Codeine | F |
| Codonopsis pilosula | Root tincture | E |
| Coffea arabica Tr | Unroasted beans | A |
| Coffea Cruda Tr | Any part | A |
| Coix lachryma-jobi | Seeds | E |
| Cola nitida Cotyledons | Powder Liquid extract | E |
| Cola vera | also Cola nitida | E |
| Colchicum tincture | Flower and Seeds | A |
| Colchicum autumnale Tr | Fresh corms | A |
| Collinsonia tincture | Any part | A |
| Collinsonia canadensis Tr | Fresh roots | A |
| Collodion | Any part | A |
| Collodion Flexile | Any part | A |
| Collodion Simple | Any part | A |
| Collodion Styptic | Any part | A |
| Colocynth | also Citrullus colocynth | A |
| Cologne Eau de | Any part | F |
| Coltsfoot | also Tussilago | A |
| Columba | Any part | A |
| Combretum sundiacum | Herb Liquid Extract | A |
| Comfrey Extract | also Symphytum officinale | E |
| Commiphora molmol (Myrrh) | Resin tincture | A |
| Commiphora myrrha | Any part | A |
| Comocladia dentata Tr | Leaves and bark | A |
| Composition Essence | Any part | A |
| Condurango | also Marsdenia condurango | E |
| Conium maculatum | Hemlock herb | A |
| Convallaria majalis Tr (Lilly of the Valley) | Whole plant | A |
| Convolvulus duartinus Tr | Flowers | A |
| Conyza canadensis Tr | Fresh aerial parts | A |
| Copaiba Buchu and Cubebs Solution | Any part | A |
| Copaiba Conc. Sol. | Any part | E |
| Copaiba and Sandalwood | Oil Solution | A |
| Copaiba officinalis Tr | Oleo-resin | A |
| Copaifera lansdorffi | also Gum Copal | E |
| Coptis chinensis | Rhizome tincture | A |
| Corallium Rubrum Tr | Red Coral | F |
| Coriander | also Coriandrum sativum | F |
| Coriandri tincture | Any part | F |
| Coriandrum sativum | Seeds | E |
| Corn cures containing Collodion | Any part | A |
| Corn Silk | also Maize stigmas | A |
| Cornflower | also Centaurea cyanus | E |
| Cornus circinata Tr | Fresh bark | A |
| Cornus florida Tr (American Boxweed) | Fresh bark | A |
| Cornus officinalis | Fruits tincture | E |
| Cornus sericea Tr (American Red Osier) | Fresh bark | A |
| Cortisone | Cortisone acetate | F |
| Corydalis yanhusuo | Any part | E |
| Corylus avellana | Any part | E |
| Coscinium | Any part | A |
| Costus dulcis | Any part | A |
| Coto | Any part | A |
| Cotton Root Bark tincture | Any part | A |
| Cotyledon umbilicus Tr | Fresh leaves | A |
| Couch Grass | Any part | A |
| Court Plaster containing collodion | Medicated liquid | A |
| Cramp Barl Liquid Extract | also Viburnam opulus | E |
| Cranberry Fruit | also Vaccinum oxycoccus | E |
| Crataegus spp | Any part | A |
| Crataegus laevigata Tr | Fresh berries | A |
| Crataegus monogyna | Any part | A |
| Crataegus oxyacantha Tr (Hawthorn) | Fresh berries | A |
| Creosote and potassium | Iodide mixture | A |
| Creosotum | also Kreasotum | A |
| Cresol Soap Solution | Any part | A |
| Crinale Lotion | also Amygdalae Ammoniata | F |
| Crocus sativus Tr | Dried stigmata (Saffron) | E |
| Crotalus | Rattlesnake venom | F |
| Croton Oil liniment | Any part | A |
| Croton tiglium Tr | Dried ripe seeds or seed oil | A |
| Cubeba officinalis Tr | Berries | E |
| Cubebs tincture | Any part | E |
| Cucumber Succus | Any part | F |
| Cucurbita moschata (Pumpkin) | Seeds | A |
| Cudbear tincture | Any part | A |
| Cuminum cyminum | Any part | E |
| Cummin tincture | Any part | F |
| Cundurango | (see Marsdenia cundurango) | A |
| Cuprum Aceticum | Cupric acetate | A |
| Cuprum Arsenicosum | Cupric arsenite | F |
| Cuprum Carbonicum | Cupric carbonate | F |
| Cuprum Metallicum Tr | Copper metal | F |
| Cuprum Sulphuricum | Copper sulphate | A |
| Curare Tr | Extract | A |
| Curculigo orchioides | Roots tincture | E |
| Curcuma tincture | Any part | F |
| Curcuma longa | also Turmeric | F |
| Curcuma zeodaria | also Zedoary | F |
| Curcurbita pepo (Melon) | Seed | A |
| Cuscuta chinensis | Seeds | A |
| Cusparia (Angostura) | Any part | E |
| Cusso | also Kousso | A |
| Cyclamen europaeum Tr | Fresh roots | A |
| Cydoniae Semina | Any part | E |
| Cymbopogon citratus | also Lemon grass | F |
| Cynara scolymus Tr | Whole plant | E |
| Cynoglossum officinale | Herb tincture | A |
| Cynomorium songaricum | Any part | E |
| Cyperus esculentus | also Tiger Nuts | F |
| Cyperus rotundus | Rhizome tincture | E |
| Cypripedium pubescens Tr | Fresh roots | E |
| Cytisus scoparius Tr | also Broom | A |