Desogestrel

N/A

Desogestrel is used to provide contraceptive efficacy in women who want to prevent pregnancy. Desogestrel has proved to be highly efficacious as a contraceptive pill and is an alternative for women who have a weak tolerance levels for the estrogen hormones or who are lactating or breast feeding.

N/A

Known or suspected pregnancy, active venous thromboembolic disorder, presence or history of severe hepatic disease with current abnormal liver function tests, progestogen dependent tumors, undiagnosed vaginal bleeding, hypersensitivity to ingredients.

Enzyme-inducing drugs may result in increased clearance and lead to breakthrough bleeding and contraceptive failure. This may be seen with hydantoins, barbiturates, primidone, carbamazepine, rifampicin, oxcarbazepine, rifabutin, felbamate, ritonavir, griseofulvin and products containing St John's Wort. Reduced absorption of etonogestrel may be seen with medical charcoal.

Common: irregular bleeding, amenorrhoea, headache, weight gain, breast pain, nausea, acne, mood changes, decreased libido. Less common: Vaginitis, dysmenorrhoea, ovarian cysts, vomiting, alopecia, fatigue, difficulty wearing contact lenses. Rare: Rash, urticaria, erythema nodosum.

No serious deleterious effects have been reported from an overdose. Other symptoms may include nausea, vomiting and in young girls, slight vaginal bleeding. Treatment should be symptomatic.

Not recommended for use during pregnancy. Desogestrel does not affect the production or quality of breast milk. Small amounts of the metabolite etonogestrel are excreted with the milk. Long term follow-up data are not available, however 7 month data do not indicate a risk to the nursing infant

Epidemiological studies have associated the use of combined OCs with an increased incidence of venous thromboembolism (VTE, deep venous thrombosis and pulmonary embolism). It is unclear whether desogestrel used alone carries the same risk. Discontinue in the event of a thrombosis. Consider stopping prior to long term immobilization due to surgery or illness. Benefit/risk assessment should be made in women with liver cancer. Caution patients with a history of thromboembolic disorders. Patients with diabetes should be carefully monitored. Effects on bone density are unknown.