Oestradiol
Indications
Registered South African indications:
- Menopause
Cautions
Contraindications
- Hypersensitivity to the active ingredient or any of its excipients
- Pregnancy
- Severe renal impairment
- Severe hepatic impairment
- Severe cardiac disease
- Known or suspected cancer of the breast, genital tract or other oestrogen-dependent neoplasia
- History of thrombosis or thromboembolic disorders
- Undiagnosed vaginal bleeding
- Endometrial hyperplasia
- Porphyria
Cautions
- Breastfeeding
- Mild to moderate renal impairment
- Mild to moderate hepatic impairment
- Elderly
- Uterine fibroids
- Risk factors for thromboembolic disorders
- Risk factors for oestrogen-dependent tumours
- Hypertension
- Diabetes mellitus
- Cholelithiasis
- Migraine
- Systemic lupus erythematosus
- History of endometrial hyperplasia
- Epilepsy
- Asthma
- Otosclerosis
- Hereditary angioedema
- Hypertriglyceridaemia
- History of chloasma gravidarum
Adult dosage
Forms avail. in SA and covered in this monograph: gel
Oestrogen replacement therapy for the relief of symptoms due to natural or surgically induced menopause
- Vasomotor symptoms
- Atrophic vaginitis
- Atrophic urethritis
- Topical (gel): Apply 1.5mg (2.5g gel) to skin of lower trunk or thigh, dly
2.5g is equivalent to 2 plunges of the pump or one length of the plastic groove rule
Area of application should be approximately 750cm2 or 6 times the size of one hand
Should not be applied near the breasts or on the vulva
Paediatric dosage
Not indicated for use in children
Special populations
Pregnancy
- Contraindicated
Breastfeeding
- Caution; no information available
Renal Impairment
- Mild to moderate: Caution; no information available
- Severe: Contraindicated
Hepatic Impairment
- Mild to moderate: Caution; no information available
- Severe: Contraindicated
Elderly
Porphyria
- Contraindicated
Adverse reactions
Central Nervous System Disorders
- Headache
- Dizziness
- Migraine
- Paraesthesia
- Tremor
- Depression
- Nervousness
- Lethargy
- Anxiety
- Insomnia
- Apathy
- Emotional lability
- Impaired concentration
- Changes in libido
- Changes in mood
- Euphoria
- Agitation
- Fatigue
- Cerebral ischaemic events
Cardiovascular Disorders
- Palpitations
- Hot flushes
- Hypertension
- Superficial phlebitis
- Purpura
- Venous thromboembolism
Respiratory Disorders
- Dyspnoea
- Rhinitis
- Pulmonary embolism
Gastrointestinal Disorders
- Nausea and vomiting
- Stomach cramps
- Flatulence
- Abdominal pain
- Constipation
- Dyspepsia
- Diarrhoea
- Rectal disorder
- Bloating
Hepatobiliary Disorders
- Alterations in hepatic function and biliary flow
- Cholestatic jaundice
Genitourinary Disorders
- Benign endometrial neoplasm
- Uterine fibroids
- Increased urinary frequency
- Urinary urgency
- Urinary incontinence
- Cystitis
- Discoloured urine
- Haematuria
- Unscheduled vaginal bleeding or spotting
- Vaginal discharge
- Disorders of vulva or vagina
- Menstrual disorder
- Endometrial hyperplasia
- Uterine disorder
- Breast cancer
- Breast pain/tension
- Breast enlargement
- Breast tenderness
- Dysmenorrhea
- Pre-menstrual like syndrome
Endocrine and Metabolic Disorders
- Benign breast neoplasm
- Increased weight
- Decreased weight
- Increased appetite
- Hypercholesterolemia
- Endometrial cancer
- Ovarian cancer
Musculoskeletal Disorders
- Joint disorders
- Muscle cramps
Skin and Subcutaneous Tissue Disorders
- Rash
- Pruritus
- Acne
- Alopecia
- Dry skin
- Nail disorder
- Skin nodule
- Hirsutism
- Erythema nodosum
- Urticaria
- Contact dermatitis
- Eczema
- Skin irritation
- Application site pain
- Increased sweating
- Oedema
Immune, Blood and Lymphatic System Disorders
- Hypersensitivity reaction
- Exacerbation of hereditary angioedema
- Fever
- Asthenia
- Flu syndrome
- Malaise
Sensory Disorders
- Impaired vision
- Dry eye
- Intolerance of contact lenses
Interactions
- CYP450 inducers
- Anticonvulsants
- Phenobarbital
- Phenytoin
- Carbamazepine
- Anti-infectives
- Rifampicin
- Rifabutin
- Nevirapine
- Efavirenz
- Ritonavir
- Nelfinavir
Others
- St John's wort
Monitoring
- Pelvic examination
- Breast examination
- Mammogram
- Papanicolaou smear
- Blood pressure
Specific cases may require
- Blood glucose
- Hepatic function
- Lipid profile
- Thyroid function
- Endometrial sampling
- Bone density scan
- Ophthalmic examination
Mechanism of action
Synthetic 17β-oestradiol is chemically and biologically identical to endogenous human oestradiol. Oestrogen mediates its effects by binding to the oestrogen receptor, which is located in various tissues such as the breasts, uterus, ovaries, skin, prostate, bone, fat, and brain. Endogenous 17β-oestradiol induces and maintains the primary and secondary female sexual characteristics. It substitutes for the loss of oestrogen production in menopausal women and alleviates menopausal symptoms.
Dosage forms
- Jel, topical external
Formulation
Gel (per 2.5g) 1.5mg
- Femigel (Medi-Challenge) originator
Also available in the following forms: Transdermal patch, vaginal tablet, oral tablet and implant.
References
1. SAMF_12th Edition_Page 229 2. https://www.medicines.org.uk/emc/medicine/1392 (27/05/2016_Orion_Sandrena_1.0_gel) https://www.medicines.org.uk/emc/product/1048/smpc (https://drive.google.com/drive/folders/1oR7_wrtPzSyIh5Jcrz29Ivo_L3ECU-2M) 3. https://drive.google.com/drive/folders/0B4_v8Xoq_6PoZnZrNGJGaGFxWG8 (09/1995_Medi_Femigel) 4. https://drive.google.com/drive/folders/0B4_v8Xoq_6PoZnZrNGJGaGFxWG8 (09/1995_Medichallenge_Femigel) 5. https://www.uptodate.com/contents/estradiol-systemic-drug-information?source=search_result&search=estradiol&selectedTitle=1~149 6. Drugbank: Oestrdiol; Accessed online 12 Feb 2019 [https://www.drugbank.ca/drugs/DB00783] 7. AfriTox: Oestradiol; Last accessed online 21 July 2020 [https://www.afritox.co.za/hp/SingleToxin/SingleToxin.aspx?SingleToxinID=456]
Brands & products
1 product · cached snapshot- Femigel
JELJel, topical external· 1 product
from R254.85| Product | Strength | Pack | Applicant | Min price |
|---|---|---|---|---|
| Femigel | 1.5 mg/2.5g | 1 | Medi Challenge | R254.85 |
Medical aid coverage
data not yet integrated- Comprehensive Series—
- Executive Plan—
- KeyCare Series—
- Priority Series—
- Saver Series—
Formulary scraper pending — coverage tier, co-pay and authorisation requirements will appear here once data is ingested.
- BonClassic—
- BonComprehensive—
- BonEssential—
- BonFit Select—
- BonSave—
- BonStart—
Formulary scraper pending — coverage tier, co-pay and authorisation requirements will appear here once data is ingested.
- Beryl—
- Emerald—
- Onyx—
- Ruby—
- Sapphire—
- Tanzanite One—
Formulary scraper pending — coverage tier, co-pay and authorisation requirements will appear here once data is ingested.
- Aquarium Option—
- Efficiency Option—
- Marine Option—
Formulary scraper pending — coverage tier, co-pay and authorisation requirements will appear here once data is ingested.