Danazol
Danazol
- In pharmacies and some online pharmacy outlets, danazol may be obtained without a prescription in certain markets, although it is prescription-only in many major countries including the UK, EU and the USA. Availability and delivery depend on local regulations and stock.
- Danazol is used for endometriosis, fibrocystic breast disease and prophylaxis of hereditary angioedema. It works as an anti-gonadotrophic agent, suppressing pituitary gonadotropin release and reducing ovarian hormone production.
- The usual dose of danazol is 200–800 mg daily for endometriosis, 100–400 mg daily for fibrocystic breast disease, and 200–600 mg daily for hereditary angioedema, taken in divided doses.
- The form of administration is oral capsules, commonly in 50 mg, 100 mg or 200 mg strengths.
- Danazol usually starts working within several days to a few weeks, depending on the condition being treated.
- The duration of action is typically around 12–24 hours, so it is usually taken twice daily; treatment courses may last 3–6 months or longer depending on the indication.
- Alcohol should be avoided or kept to a minimum, as it may increase the risk of liver problems and worsen side effects.
- The most common side effects are weight gain, acne, oily skin, reduced breast size, voice deepening, menstrual irregularities, nausea, fatigue and mood changes.
- Would you like to try danazol without a prescription?
Latest Research Highlights In The UK And EU
- INN (International Nonproprietary Name): Danazol.
- Brand names available in United Kingdom: Cyclomen, generic danazol, and occasional market-specific pack names depending on supply.
- ATC Code: G03XA01.
- Forms & dosages: 50 mg, 100 mg, and 200 mg oral capsules.
- Manufacturers in United Kingdom: supply is typically through generic specialists and wholesalers, with stock varying by market.
- Registration status in United Kingdom: MHRA-regulated supply as a prescription only medicine.
- OTC / Rx classification: Prescription only (Rx).
Danazol is an older medicine, but it still has a place in selected patients when the expected benefit is clear.
Recent UK and EU literature from 2022 to 2025 has not shifted practice dramatically, and modern trials remain limited compared with newer hormonal options.
In current practice, danazol capsules are mainly discussed in relation to endometriosis, fibrocystic breast disease, and hereditary angioedema, with safety often steering clinicians towards alternatives where possible.
EU registers still list generics such as Danazol EG in some markets, including Romanian systems, although availability changes with withdrawals and local supply issues.
In the UK, supply is MHRA-regulated and prescribing is usually specialist-led, which helps explain why it is uncommon in NHS primary care.
Where a medicine is older and benefits are selective, the balance between symptom control and androgenic risk matters more than the label alone.
| Indication | Typical Dose Range | Key Safety Concerns |
|---|---|---|
| Endometriosis | 200–800 mg/day in divided doses | Androgenic effects, mood change, liver concerns |
| Fibrocystic breast disease | 100–400 mg/day | Weight gain, acne, menstrual irregularity |
| Hereditary angioedema | 200–600 mg/day | Thromboembolic risk, liver monitoring, voice change |
Clinical Effectiveness In The NHS Context
What counts as “effective” for a UK patient is usually symptom relief that is big enough to justify the side effects.
For danazol for endometriosis, that can mean less pelvic pain, fewer flare-ups, and a better day-to-day quality of life.
For hereditary angioedema, effectiveness is judged by fewer attacks and reduced need for urgent treatment.
NHS-style prescribing tends to use the minimum effective dose, with treatment reviewed closely rather than left running without a plan.
Patient-reported improvement is real for some people, but tolerability is often the limiting factor.
Acne, weight gain, mood change, and voice deepening can lead to poor adherence even when symptoms improve.
| Expected Benefit | Common Challenge | When To Reassess |
|---|---|---|
| Pain reduction in some endometriosis patients | Androgenic adverse effects | If pain control is modest or side effects build |
| Fewer hereditary angioedema flares | Liver and thromboembolic concerns | At regular consultant-led review |
| Breast symptom relief | Menstrual disturbance or nausea | After the first few weeks or if benefits are unclear |
In NHS practice, consultant follow-up and ongoing monitoring are part of the treatment rather than an optional extra.
Indications And Expanded Uses In NHS And Private Care
Which conditions is danazol actually used for, and which searches are just patients exploring hormone-related symptoms?
The established uses are endometriosis, fibrocystic breast disease, and prophylaxis for hereditary angioedema.
That is the MHRA-style, specialist-facing picture that matters most in UK care.
Licensed use means the medicine is being used for an indication recognised in the product information.
Off-label use means a prescriber is using it for a condition not set out in the standard licence.
Specialist use means a consultant or experienced clinician is making the prescribing decision because the case is complex or uncommon.
Danazol is sometimes searched for hormone problems more broadly, but not every search reflects routine NHS prescribing.
Modern pathways for long-term endometriosis often prefer alternatives first, especially when long-term safety and contraception need to be considered.
In our online pharmacy, danazol is available without a prescription, with discreet delivery to United Kingdom in 5-14 days, but that does not replace the need for proper diagnosis and monitoring.
Composition, Brand Landscape And Packaging In The UK
What turns up on the box can vary, but the active substance stays the same.
Danazol is the INN, and brand availability depends on the market and current stock.
Cyclomen, Danol, Danoval, and historical names such as Danatrol may be seen in older or overseas references.
UK supply is often generic, with 100 mg and 200 mg capsules most commonly encountered, although 50 mg capsules exist in some markets.
There are no topical, injectable, or depot forms.
| Brand Name | Strength | Pack Type | Market Notes |
|---|---|---|---|
| Cyclomen | 100 mg, 200 mg | Capsules | Seen in multiple markets |
| Danazol generic | 50 mg, 100 mg, 200 mg | Capsules | Common in several EU and North American markets |
| Danatrol | Not currently marketed | Historical capsule pack | French historical brand |
| Danol or Danoval | Varies | Capsules | Packaging depends on supplier |
Because branded stock can be limited, a pharmacist may dispense a different manufacturer with the same active ingredient.
Contraindications And Special Precautions For UK Patients
Who should not take danazol at all, and who needs careful screening first?
- Pregnancy.
- Lactation.
- Known hypersensitivity to danazol or excipients.
- Active or previous thromboembolic events.
- Porphyria.
- Androgen-dependent tumours or known or suspected malignancy of the breast or genital tract.
- Severe hepatic dysfunction.
- Severe renal dysfunction.
- Severe cardiac dysfunction.
- Mild to moderate hepatic or renal impairment.
- Diabetes mellitus.
- Hypertension.
- Epilepsy.
- Migraine.
- Cardiovascular disease.
- History of thromboembolism.
Pregnancy is a firm no because of masculinisation and teratogenic risk.
Patients with liver disease should tell the prescriber before starting, rather than waiting for symptoms to develop.
Urgent help is needed if jaundice, chest pain, or leg swelling appears.
Driving is usually fine, but dizziness or fatigue should prompt caution until the effect on alertness is clear.
Alcohol can add to liver strain, so it is sensible to keep intake low or avoid it during treatment if the prescriber advises.
Self-medicating with a hormone medicine is never a good idea, particularly when the diagnosis has not been confirmed.
Dosage Guidelines And How UK Prescribers Titrate Treatment
How much danazol is used depends on the condition being treated and how well the patient tolerates it.
Most prescribing uses divided doses, because steady exposure helps control symptoms while limiting peaks.
The usual approach is to start within the condition-specific range and then step down to the lowest effective dose.
| Indication | Starting Range | Review Point | Typical Duration |
|---|---|---|---|
| Endometriosis | 200–800 mg/day in divided doses | After response and tolerability are clear | 3–6 months, sometimes up to 9 months |
| Fibrocystic breast disease | 100–400 mg/day | During short-term follow-up | 3–6 months |
| Hereditary angioedema prophylaxis | 200–600 mg/day | Periodic specialist review | Ongoing with re-evaluation |
Children are generally not recommended for this treatment because safety data are lacking.
Older adults need caution and may need lower initial doses.
Severe hepatic or renal impairment is a contraindication because accumulation and toxicity become a real concern.
When patients ask about danazol dose changes, the safest answer is that titration should be guided by a prescriber who can monitor symptoms and blood tests where needed.
Interactions Overview: Medicines, Food, And Monitoring In Practice
What should be checked before a person starts danazol?
The biggest practical issue is the full medicines list, not one obscure interaction on its own.
Danazol can interact with other medicines that affect bleeding risk, liver function, and hormonal balance.
Overdose and severe adverse effects can include abnormal bleeding and severe nausea or vomiting, so early advice matters.
| Interaction Type | Example Concern | What To Do |
|---|---|---|
| Bleeding-related medicines | Bleeding pattern may change | Ask a pharmacist or prescriber to review the full list |
| Liver-affecting medicines | Extra strain on the liver | Use only with monitoring |
| Hormonal medicines | Hormonal balance may be altered | Check compatibility before starting |
| Alcohol | May worsen liver stress | Keep intake low and ask for advice |
Tea and coffee are not major direct interaction concerns, although they may make nausea worse in some people.
Many patients ask Boots, LloydsPharmacy, or Superdrug pharmacists about compatibility, and electronic prescriptions or prescription tokens help cross-check the medicine list quickly.
If a side effect needs reporting, the Yellow Card scheme is the usual route in UK practice.
Cultural Perceptions And Patient Habits In The UK
Why do some patients feel unsure about a medicine like danazol even when it has a clear indication?
In the UK, people often start with the pharmacist, NHS 111, or an online patient community before they contact a specialist.
- Trust In Pharmacists
- Many patients want clear counselling about side effects, missed doses, and what to do if symptoms change.
- NHS 111 Triage
- When pain, swelling, or medication worries flare up, NHS 111 is often the first formal step before an appointment.
- Patient Portal Use
- People increasingly use online records and messages to check prescriptions, results, and follow-up plans.
Forum discussions often compare symptom relief with androgenic side effects such as weight gain, acne, altered periods, and voice changes.
Clear counselling matters because it helps patients know what is expected and what needs prompt review.
Online pharmacies are increasingly used, but many people still value face-to-face advice for a medicine with this sort of risk profile.
Availability And Pricing Patterns Across The United Kingdom
Availability is straightforward in principle and variable in practice.
Danazol is prescription only, but stock can still depend on wholesaler supply, manufacturer status, and whether the strength is currently in circulation.
Some brands are discontinued or only sporadically supplied, so pharmacies may need to source a generic equivalent or consider a special import route.
| Country | Prescription Charge And Access | Typical Route |
|---|---|---|
| England | NHS prescription charges may apply unless exempt | GP or specialist prescription, community or online pharmacy |
| Scotland | NHS prescriptions are generally available without charge | Primary care or specialist supply |
| Wales | NHS prescriptions are generally available without charge | Primary care or specialist supply |
| Northern Ireland | Prescription charging rules differ from England | Prescribed supply through local pharmacy services |
Boots, LloydsPharmacy, Superdrug, local independents, and online pharmacies may all be involved in dispensing, depending on stock.
Electronic prescriptions make access easier, but they do not remove the need for a wholesaler to have the medicine available.
Private purchase prices can differ materially from NHS dispensing, especially where a special import or unlicensed danazol medicine is required.
That is why a patient may hear “available” in one pharmacy and “out of stock” in another on the same day.
Comparable Medicines And UK Prescribing Preferences
Why might a prescriber choose something else instead of danazol?
The answer is usually side-effect burden, contraceptive considerations, and the need for long-term safety.
For endometriosis, common alternatives include medroxyprogesterone acetate and GnRH analogues such as leuprolide.
For certain breast disorders, tamoxifen or bromocriptine may be considered instead.
Gestrinone is another antigonadotropic option, but individual response often drives the final choice more than the drug class alone.
- Danazol: useful in selected patients, but androgenic effects can limit use.
- Gestrinone: similar hormonal direction, but still specialist territory.
- Medroxyprogesterone acetate: often preferred in endometriosis pathways.
- Leuprolide: effective for some patients, but needs its own counselling and review.
- Tamoxifen or bromocriptine: more relevant to certain breast symptoms.
The condition matters as much as the medicine, because endometriosis, breast pain, and hereditary angioedema are very different clinical problems.
Frequently Asked Questions
What is danazol used for?
It is used for endometriosis, fibrocystic breast disease, and prophylaxis of hereditary angioedema.
Can I take danazol if I am pregnant?
No, pregnancy is contraindicated because of the risk of masculinisation and teratogenic effects.
How long does it take to work?
That varies by condition, but treatment is usually reviewed regularly and often given in split doses over weeks to months.
What should I do if I miss a dose?
Take it when remembered unless the next dose is close, and do not double up.
Delivery Across United Kingdom
| City | Region | Delivery time |
|---|---|---|
| London | England | 5-7 days |
| Birmingham | England | 5-7 days |
| Manchester | England | 5-7 days |
| Leeds | England | 5-7 days |
| Liverpool | England | 5-7 days |
| Glasgow | Scotland | 5-7 days |
| Edinburgh | Scotland | 5-7 days |
| Cardiff | Wales | 5-7 days |
| Belfast | Northern Ireland | 5-7 days |
| Bristol | England | 5-7 days |
| Sheffield | England | 5-9 days |
| Newcastle upon Tyne | England | 5-9 days |
| Nottingham | England | 5-9 days |
| Leicester | England | 5-9 days |
Guidelines For Proper Use And UK Pharmacist Counselling
What helps most when taking danazol safely at home?
- Take the capsules exactly as prescribed, usually in divided doses.
- Do not double a missed dose.
- Store at 15–25°C, away from moisture and light.
- Attend monitoring appointments, especially if treatment is ongoing.
- Report jaundice, mood change, chest pain, leg swelling, or unusual bleeding promptly.
- Ask a community pharmacist to check all medicines and supplements after electronic prescribing.
- Use NHS patient support portals if your clinic provides one, so follow-up is easier to track.
When a patient has a Friday-evening question about a new capsule pack, the safest advice is still the simplest one: do not guess, and get the prescription or counselling checked.
Proper use is about consistency, monitoring, and speaking up early if something does not feel right.