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A topical anesthetic is a local anesthetic that is used to numb the surface of a body part. They can be used to numb any area of the skin as well as the front of the eyeball, the inside of the nose, ear or throat, the anus and the genital area. [1] Topical anesthetics are available in creams, ointments, aerosols, sprays, lotions, and jellies.
In one study published in the International Journal of Impotence Research, experts found that a lidocaine 5% spray increased climax time when used 10 to 20 minutes before intimacy.
Skin: itching, depigmentation, rash, urticaria, edema, angioedema, bruising, inflammation of the vein at the injection site, irritation of the skin when applied topically; Blood: methemoglobinemia; Allergy; ADRs associated with the use of intravenous lidocaine are similar to the toxic effects of systemic exposure above.
Many local anesthetics fall into two general chemical classes, amino esters (top) and amino amides (bottom). A local anesthetic (LA) is a medication that causes absence of all sensation (including pain) in a specific body part without loss of consciousness, [1] providing local anesthesia, as opposed to a general anesthetic, which eliminates all sensation in the entire body and causes ...
It is also sometimes used in advance of injected local anaesthetics for minor surgery and biopsies. A topical spray consisting of an aerosol formulation of lidocaine and prilocaine was evaluated under the name PSD502 for use in treating premature ejaculation. The spray is applied on the penile skin prior to intercourse.
Cetacaine is a topical anesthetic that contains the active ingredients benzocaine (14%), butamben (2%), and tetracaine hydrochloride (2%). Cetacaine also contains small amounts of benzalkonium chloride at 0.5% and 0.005% of cetyl dimethyl ethyl ammonium bromide all in a bland water-soluble base. [1]
Benzocaine gives a numbing effect similar to cocaine and as a bulking and binding agent it can not be detected once mixed. It is the most popular cutting agent worldwide. [33] Treatment of benzocaine with hydrazine leads to aminostimil, a compound related to isoniazid.
Tetracaine is the T in TAC, a mixture of 5 to 12% tetracaine, 0.05% adrenaline, and 4 or 10% cocaine hydrochloride used in ear, nose, and throat surgery and in the emergency department where numbing of the surface is needed rapidly, especially when children have been injured in the eye, ear, or other sensitive locations.