Drug Uses
Retin-A is often used to improve the appearance and texture of the skin. It produces a mild, superficial peel of the epidermis. Retin-A has effects on the both the superficial (epidermis) and the deep (dermis) parts of the skin. The major benefit is to decrease the effects of sunlight caused aging by increasing the speed with which the surface cells are replaced.
How Taken
Apply a thin layer to affected area once a day at bedtime. Use a gauze pad or cotton swab to apply the liquid. Wash your hands immediately after use. Using this medication more frequently or in excessive amounts does not improve the results, but may increase side effects. Avoid applying near the eyes, mouth, or open cuts since this medication can irritate sensitive skin. Acne may appear to worsen when the medication is first used; continue therapy. It may take three to six weeks before the full benefits of this medication are seen.
Use mild soap when washing your face. Do not wash face excessively. Abrasive soaps, cleansers, medicated creams or lotions can increase skin irritation. Consult your doctor or pharmacist about their use. Use other acne preparations with caution while using this medication.
Warnings/Precautions
This medication can increase sensitivity to sunlight, wind and cold. Avoid prolonged exposure to the sun and sunlamps. Wear protective clothing and use an effective sunscreen. This medication should be used during pregnancy only if clearly needed. It is not known if Retin-A appears in breast milk. Consult your doctor before breast-feeding.
Missed Dose
If you miss a dose, use it as soon as remembered; do not use if it is almost time for the next dose, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up.
Possible Side Effects
Due to the possibility of irritation, it is advisable to begin treatment on a small area of skin. Exposure to the sun or to ultraviolet rays causes additional irritation. During treatment, such exposure should be avoided as much as possible or a sun block should be used.
During the first weeks of treatment there may be an apparent worsening of the problem. Such a reaction is perfectly normal because small cysts deep within the skin are being eliminated at an accelerated rate.
This medication can increase sensitivity wind and cold. Avoid prolonged exposure to the sun and sunlamps. Wear protective clothing and use an effective sunscreen. If any ingredient should cause hypersensitivity, discontinue use.
Storage
Store at room temperature away from sunlight. Keep this and all medications out of the reach of children.
Overdose
Applying Retin-A excessively will not produce faster or better results, and marked redness, peeling, or discomfort could occur. Over dosage with other retinoid has been associated with transient headache, facial flushing, celosias, abdominal pain, dizziness and ataxia.
More Information
If you have been previously treated with keratolytic preparations or exfoliants, you should wait until any skin rash clears up before beginning even low strength treatment. Studies of the effect of this product on pregnant women are incomplete. For this reason, it should only be applied when absolutely necessary and always under a doctor's supervision.
The effectiveness of Retin-A is almost always accompanied by skin irritation. In the treatment of acne, this phenomenon is directly related to the effectiveness of the product and disappears once applications are more spaced out.
Cosmetics may be used, but clean skin thoroughly before applying the medication.
Disclaimer
This drug information is for your information purposes only, it is not intended that this information covers all uses, directions, drug interactions, precautions, or adverse effects of your medication. This is only general information, and should not be relied on for any purpose. It should not be construed as containing specific instructions for any particular patient. We disclaim all responsibility for the accuracy and reliability of this information, and/or any consequences arising from the use of this information, including damage or adverse consequences to persons or property, however such damages or consequences arise. No warranty, either expressed or implied, is made in regards to this information.
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Tretinoin, also known as all-trans-retinoic acid (ATRA), is a naturally occurring derivative of vitamin A (retinol). Retinoids such as tretinoin are important regulators of cell reproduction, proliferation, and differentiation and are used to treat acne and photodamaged skin and to manage keratinization disorders such as ichthyosis and keratosis follicularis. Tretinoin also represents the class of anticancer drugs called differentiating agents and is used in the treatment of acute promyelocytic leukemia (APL). For the the induction of remission in patients with acute promyelocytic leukemia (APL), French-American-British (FAB) classification M3 (including the M3 variant); For the topical treatment of acne vulgaris, flat warts and other skin conditions (psoriasis, ichthyosis congenita, icthyosis vulgaris, lamellar icthyosis, keratosis palmaris et plantaris, epidermolytic hyperkeratosis, senile comedones, senile keratosis, keratosis follicularis (Darier's disease), and basal cell carcinomas.); For palliative therapy to improve fine wrinkling, mottled hyperpigmentation, roughness associated with photodamage.
Tretinoin binds to alpha, beta, and gamma retinoic acid receptors (RARs). RAR-alpha and RAR-beta have been associated with the development of acute promyelocytic leukemia and squamous cell cancers, respectively. RAR-gamma is associated with retinoid effects on mucocutaneous tissues and bone. Although the exact mechanism of action of tretinoin is unknown, current evidence suggests that the effectiveness of tretinoin in acne is due primarily to its ability to modify abnormal follicular keratinization. Comedones form in follicles with an excess of keratinized epithelial cells. Tretinoin promotes detachment of cornified cells and the enhanced shedding of corneocytes from the follicle. By increasing the mitotic activity of follicular epithelia, tretinoin also increases the turnover rate of thin, loosely-adherent corneocytes. Through these actions, the comedo contents are extruded and the formation of the microcomedo, the precursor lesion of acne vulgaris, is reduced. Tretinoin is not a cytolytic agent but instead induces cytodifferentiation and decreased proliferation of APL cells in culture and in vivo. When Tretinoin is given systemically to APL patients, tretinoin treatment produces an initial maturation of the primitive promyelocytes derived from the leukemic clone, followed by a repopulation of the bone marrow and peripheral blood by normal, polyclonal hematopoietic cells in patients achieving complete remission (CR). The exact mechanism of action of tretinoin in APL is unknown.
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