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| Chemical Name | Dosage | Reference |
|---|---|---|
| ASCORBIC-ACID | not available | Duke, 1992 * |
| D-LIMONENE | not available | Duke, 1992 * |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Cimicifuga racemosa | Black Cohosh; Black Snakeroot | 1 | 270 |
| Cinnamomum aromaticum | Cassia; Cassia Bark; Cassia Lignea; Chinese Cassia; Chinese Cinnamon; China Junk Cassia; Saigon Cinnamon; Zimtcassie (Ger.); Canela de la China (Sp.); Canelero chino (Sp.); Chinazimt (Ger.); Chinesischer Zimtbaum (Ger.); Kashia-Keihi (Jap.); Canelle de Cochinchine (Fr.); Cannelier Casse (Fr.); Cannelier de Chine (Fr.) | 1 | 4, 944 |
| Cinnamomum verum | Cinnamon; Ceylon Cinnamon | 1 | 618 |
| Citrullus colocynthis | Colocynth | 1 | 122 |
| Citrullus lanatus | Watermelon | 1 | 94 |
| Citrus aurantiifolia | Lime | 1 | 4, 444 |
| Citrus aurantium | Petitgrain; Bitter Orange | 2 | 13, 894 |
| Citrus limon | Lemon | 2 | 1, 366, 966 |
| Citrus medica | Citron | 1 | 0 |
| Citrus mitis | Calamansi; Calamondin | 1 | 23, 150 |
| Citrus paradisi | Grapefruit | 2 | 22, 437 |
| Citrus reticulata | Mandarin; Tangerine | 1 | 7, 368 |
| Citrus sinensis | Orange | 2 | 4, 071 |
| Cnicus benedictus | Blessed Thistle | 1 | 30 |
| Cnidoscolus chayamansa | Chaya | 1 | 12, 200 |
| Coccinia grandis | Ivy Gourd; Kundree; Tindora; Tindori; Pepasan; Little Gourd; Kanduri | 1 | 28, 406 |
| Cocos nucifera | Coconut; Coconut Palm; Copra; Nariyal; Kokospalme (Ger.); Cocotero (Sp.) | 1 | 528 |
| Coix lacryma-jobi | Adlay; Adlay Millet; Job'S-Tears; Yi-Yi-Ren | 1 | 0 |
| Cola acuminata | Abata Cola | 1 | 1, 456 |
| Colocasia esculenta | Taro | 1 | 3, 950 |