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# Citral ## Overview Citral is a mixture of two acyclic monoterpene geometric isomers, geranial and neral. It is found in the essential oils of many plants, including lemon and lemongrass. Citral is used as a flavoring agent and fragrance ingredient. ## Primary Indications Citral is primarily used as a flavoring agent in food and beverages and as a fragrance ingredient in cosmetics and personal care products. It has some limited use as an antimicrobial agent. ## Adult Dosing Dosing is highly variable and depends on the intended use (flavoring, fragrance, antimicrobial). * **Flavoring Agent:** Generally recognized as safe (GRAS) by the FDA for use in food at levels typically below 0.5%. Specific concentrations are not standardized. * **Fragrance Ingredient:** Used in various concentrations in cosmetic products. * **Antimicrobial:** Limited clinical data; research studies have explored topical applications for conditions like acne, with concentrations ranging from 1% to 10% in specific formulations. Efficacy and safety at these concentrations are not well-established for widespread clinical use. ## Pediatric Dosing No established pediatric dosing for systemic use. Safety and efficacy in children are not well-studied for any indication. ## Dose Adjustments No specific dose adjustments are established for renal or hepatic impairment due to its common use as a food additive and fragrance ingredient. For any potential therapeutic antimicrobial use, dose adjustments would need to be determined based on clinical response and toxicity. ## Contraindications * Known hypersensitivity to citral. * Should be used with caution in individuals with a history of contact dermatitis or photosensitivity. ## Adverse Effects * **Topical:** Skin irritation, allergic contact dermatitis, photosensitivity. * **Ingestion:** Generally considered safe at levels used in food. High doses may cause gastrointestinal upset. ## Key Drug Interactions No significant drug interactions are well-documented. However, caution may be warranted if used concurrently with other photosensitizing agents. ## Monitoring * **For topical therapeutic use:** Monitor for signs of skin irritation, allergic reaction, or photosensitivity. * **General:** No routine monitoring is required when used as a flavoring or fragrance agent at approved levels. ## Clinical Pearls * Citral is a common component of essential oils and is widely used in consumer products. * While GRAS for food flavoring, its use as a direct therapeutic agent (e.g., antimicrobial) is investigational and not standardized. * Skin sensitization is a potential concern with repeated topical exposure. Please verify the current prescribing information and specific product guidelines for the intended use of citral.