Acute oral toxicity (LD50): 3530 mg/kg Rat.

This drug can cause skin and eye irritation ^L2665.

Drug-induced phototoxicity is a non-immunological inflammatory skin reaction, caused by concurrent topical or systemic exposure to a specific molecule and ultraviolet radiation. Most of the phototoxic compounds absorb energy particularly from UVA light leading to activated derivatives, which can induce cellular damage ^L2664.

Benzophenones are ultraviolet light filters that have been documented to cause a variety of adverse skin reactions, including contact and photocontact dermatitis, contact and photocontact urticaria, and anaphylaxis. Recently, they have become especially well known for their ability to induce allergy and photoallergy. Topical sunscreens and other cosmetics are the sources of these allergens in the majority of patients, however reports of reactions secondary to use of industrial products also exist. Benzophenones as a group have been named the American Contact Dermatitis Society's Allergen of the Year for 2014 to raise awareness of both allergy and photoallergy to these ubiquitous agents ^A32929.

The liver is the main target organ of benzophenone toxicity in rats and mice, based on elevations n liver weights, hepatocellular hypertrophy, clinical chemistry changes, and induction of liver microsomal cytochrome P450 2B isomer. The kidney was also identified as a target organ of benzophenone toxicity in rats only, which was based on exposure concentration-related increases in kidney weights and microscopic changes ^F40.