Myristalkonium is used as spermicide in vaginal contraceptives. It has antiseptic properties also. Breastfeeding women might use it because it does not pass into maternal milk. Absorbed only on the surface of the walls of the vagina and then return to normal physiological droppings or eliminates simple washing with water. Adverse effects are: burning, itch, contact dermatitis. Any drug, introduced into the vagina, can inactivate the local spermicidal action of Myristalkonium.

Cetrimide is a quaternary ammonium compound. Cetrimide was first introduced as a combined cleanser and skin antiseptic by Barnes (1942). Cetrimide combines excellent detergent properties and minimal toxicity with a useful antiseptic action. Cetrimide affects membrane permeability allowing ‘leaking’ of essential cell constituents leading to cell death. This medication is a skin antiseptic and disinfectant prescribed for seborrhoeic dermatitis and wound cleansing. The cream has a bactericidal activity against gram-positive bacteria and incompatible with soaps and other anionic surfactants.

Cetrimide is a quaternary ammonium compound. Cetrimide was first introduced as a combined cleanser and skin antiseptic by Barnes (1942). Cetrimide combines excellent detergent properties and minimal toxicity with a useful antiseptic action. Cetrimide affects membrane permeability allowing ‘leaking’ of essential cell constituents leading to cell death. This medication is a skin antiseptic and disinfectant prescribed for seborrhoeic dermatitis and wound cleansing. The cream has a bactericidal activity against gram-positive bacteria and incompatible with soaps and other anionic surfactants.

p-Chlorocresol (p-chloro-m-cresol; PCMC; brand name: Preventol CMK) possesses disinfectant and antiseptic properties. Chlorocresol is used in various preparations for skin disinfection and wounds. It also used as a preservative in creams and other preparations for external use which contain water. For use as a disinfectant such as a hand wash, it is commonly dissolved in alcohol in combination with other phenols. It is a moderate allergen for sensitive skin. Chlorocresol produces potentially life-threatening effects which include dermatitis, which are responsible for the discontinuation of chlorocresol therapy. The symptomatic adverse reactions produced by chlorocresol are more or less tolerable and if they become severe, they can be treated symptomatically, these include hypersensitivity reactions, irritation of eyes.

Benzododecinium, a quaternary ammonium compound, is an antiseptic agent and disinfectant. Benzododecinium is used as preservative in different pharmaceutical formulations. Thus, the dispenser of Timoptol-LA, used for the treatment of patients with ocular hypertension, contains benzododecinium bromide as a preservative. It is used as preservative and the corneal permeability enhancer in formulation. Benzododecinium is effective against gram-positive microbes.

Benzododecinium, a quaternary ammonium compound, is an antiseptic agent and disinfectant. Benzododecinium is used as preservative in different pharmaceutical formulations. Thus, the dispenser of Timoptol-LA, used for the treatment of patients with ocular hypertension, contains benzododecinium bromide as a preservative. It is used as preservative and the corneal permeability enhancer in formulation. Benzododecinium is effective against gram-positive microbes.

Mecetronium etilsulfate (MES) is a detergent and belongs to the group of surface-active ingredients. MES along with propan-2-ol and propan-1-ol is an ingredient of rub-in hand disinfectants. The antimicrobial contribution of MES in hand rubs is questionable. MES locks on the outermost layer of the skin (stratum corneum) for sustained bacterial reduction as long as 3 to 5 hours.

Benzoxonium is a quaternary ammonium compound with antibacterial, antiviral, and antimycotic activity. It can be used in topical disinfection, disinfection of surgical instruments, inhibition of plaque formation, and in veterinary products.

Bisdequalinium (also known as R-199, trade name Solvidont) is an antibacterial agent for endodontic use. Bisdequalinium was available in three dispensing forms: an irrigation solution, a working solution, and a medication paste. They contained 0.125 %, 0.5 %, and 0.48 % Bisdequalinium respectively. The low cytotoxicity and high antimicrobial effects, detergent, and lubricating and chelating properties, all claimed in the manufacturer's brochure, make this material an appropriate candidate for clinical endodontic use.

Dodeclonium bromide, an antiseptic, is an active ingredient of multi-ingredient cream, Phlebocreme. This cream is used for symptomatic treatment of painful and pruritic manifestations, particularly in the anal hemorrhoidal crisis.