Diphenhydramine is an antihistamine which is used in the combination with naproxen sodium for the relief of occasional sleeplessness when associated with minor aches and pains. Diphenhydramine has a role nighttime sleep-aid and naproxen sodium is a pain reliever. In addition, diphenhydramine used in relieving symptoms in patients with moderate-to-severe seasonal allergic rhinitis. Diphenhydramine acts as an antagonist of histamine H1 receptor. Besides, was shown potential to repurpose diphenhydramine as an anti-melanoma therapeutic agent, it induces melanoma cell apoptosis by suppressing STAT3/MCL-1 survival signaling pathway.

Bromodiphenhydramine also known as bromazine, is an antihistamine and anticholinergic agent, which was used to under brand name ambordyl. Ambordyfor was indicated for the treatment of allergic symptoms, but that usage, was discontinued. It was shown, that bromodiphenhydramine competed with free histamine for binding at HA-receptor sites and lead to a reduction of the negative symptoms brought on by histamine HA-receptor binding.

Benzophenone is the organic compound. It is a flavouring agent evaluated as safe at current levels of intake by joint FAO/WHO Expert Committee on Food Additives (JECFA) and approved by FDA as a food additive and as UV protector. Substituted benzophenones such as oxybenzone (benzophenone-3) and dioxybenzone are used in sunscreens in cosmetics and as a sunscreen ingredients in some topical drugs in combination with skin lighteners for gradual fading of dark (brownish) areas in the skin such as freckles, age and liver spots or treatment of melanosis. Benzophenone derivatives can be used as a photo initiators. Benzophenone used in practical synthesis of some drugs.