Medicine (MD/DO)
Other Obstetric & Gynecologic Pharmacology

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Partial Agonist at Androgen Receptors
Partial Dragonist at Android-genie Receptor

Danazol exerts its mechanism of action as a partial agonist at androgen receptors. Through this interaction, Danazol modulates the activity of androgen receptors, resulting in a combination of agonistic and antagonistic effects. While Danazol partially activates androgen receptors, it also competes with endogenous androgens, effectively reducing their binding to the receptors. This effect leads to a variety of therapeutic outcomes, such as the inhibition of gonadotropin secretion, suppression of ovarian function, and, ultimately, the alleviation of symptoms related to conditions like endometriosis and hereditary angioedema.


Danazol inhibits the secretion of gonadotropins and suppresses ovarian function, leading to a reduction in estrogen levels. This effect helps slow the growth of ectopic endometrial tissue and alleviates the associated symptoms, including pelvic pain, dysmenorrhea, and dyspareunia. Despite its efficacy, Danazol is often reserved for cases in which other treatment options have proven ineffective or are not well-tolerated due to potential side effects such as androgenic effects and liver function abnormalities.

Hereditary Angioedema
Hair-red-kid with Angel-edamame

Hereditary Angioedema (HAE) is a rare genetic disorder characterized by recurrent episodes of swelling in various body parts, including the face, extremities, and airways. Danazol's mechanism of action as a partial agonist at androgen receptors plays a crucial role in managing HAE symptoms. By influencing the production of complement factors and reducing the synthesis of bradykinin, a key mediator of swelling in HAE, Danazol helps to alleviate the frequency and severity of angioedema attacks.

Weight Gain
Weight-scale with Up-arrow

One of the factors contributing to weight gain is the drug's androgenic properties, which can lead to increased appetite and a redistribution of body fat.


The androgenic properties of Danazol can impact the production of proteins involved in maintaining fluid balance, potentially leading to increased retention of sodium and water in tissues.


The androgenic nature of this drug can stimulate the sebaceous glands in the skin to produce excess oil (sebum). Elevated sebum levels create an environment conducive to the growth of acne-causing bacteria, thereby leading to the development of acne.


Hirsutism is characterized by the excessive growth of coarse and dark hair in a male-pattern distribution in women. This side effect occurs due to Danazol's activity, which can increase androgenic effects in the body. Elevated androgen levels can stimulate hair growth in the face, chest, and back areas.


Danazol can induce androgenic effects that mimic the action of male sex hormones. This side effect can result in the development of masculine characteristics such as increased facial and body hair growth (hirsutism), deepening of the voice, and even clitoral enlargement.

HDL Decrease
Hot-dog-angel Down-arrow

Danazol has been associated with the side effect of decreasing high-density lipoprotein (HDL) levels in some individuals. This adverse effect is thought to be influenced by the drug's impact on lipid metabolism.

Liver with Toxic-green-glow

The exact mechanism behind this side effect is not fully understood. It is thought that Danazol's metabolism in the liver can lead to the formation of reactive metabolites that may contribute to cellular damage and inflammation.

Idiopathic Increase in Intracranial Pressure
Idiot-hat Up-arrow Pressure-cooker Cranium

The exact mechanism by which Danazol contributes to this side effect is not fully understood. Danazol may lead to fluid retention, which can, in turn, elevate cerebrospinal fluid pressure within the cranium.


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