What is Clomid
Clomid is a trade name for clomifene citrate, a selective estrogen receptor modulator used to stimulate ovulation in people seeking pregnancy. It reduces estrogen feedback at the hypothalamus and pituitary, which can increase the release of follicle stimulating hormone (FSH) and luteinising hormone (LH), promoting development of ovarian follicles.
Treatment with clomifene is usually for a limited number of cycles and is targeted at absent or irregular ovulation. For concise practical notes see the quick key points, and for dosing details see how to take a bus clomifene. If you need information about legal supply see UK prescription rules and legal caveats.
Quick key points
- Main purpose: induce ovulation to improve chances of conception when used with timed intercourse or intrauterine insemination.
- Common tablet strengths: 25 mg, 50 mg and sometimes 100 mg depending on the manufacturer.
- The active ingredient: clomifene citrate (also spelt clomiphene).
- Regulatory status in the UK: prescription-only medicine (POM). See UK prescription rules details are provided here.
- Typical timing: ovulation often occurs 5 to 10 days after the last dose in a treatment cycle.
- Not licensed for bodybuilding or post-cycle therapy; refer to the anti-doping framework for sport for regulatory implications.
How to take care of yourself clomifene
Follow the prescription and instructions given by your clinician. Clomifene is taken orally once a day, usually in a short 5-day course each cycle. The start day of the cycle together with the starting dose will be decided by your care team based on your diagnosis and previous response.
Do not increase the dose or extend the duration without medical advice. If you think you may be pregnant, stop taking the medication and contact your healthcare provider. For missed tablets see what to do if you miss a dose of your medicine. For ongoing monitoring requirements see ongoing observation and safety practices.
Monitoring workflow and risk mitigation measures
Patients usually undergo some form of the act of monitoring while taking clomifene to check for response and to reduce risks. Typical measures include:
- Regular clinic reviews with blood tests or ultrasound scans to assess follicle growth and endometrial thickness.
- Advice on timing intercourse or insemination, often supported by ovulation predictor kits; discuss exact timing with your fertility team.
- Limiting the number of treatment cycles; many people see a response within three cycles and clinicians commonly cap total courses around six cycles unless there is specialist advice to continue.
- Immediate cessation and prompt contact with your clinician if pregnancy is suspected.
- Being alert for warning signs such as those listed in latent effects and precautionary notes, notably visual symptoms or signs of ovarian hyperstimulation.
- A discussion about the increased chance of multiple pregnancy compared with spontaneous conception when consenting to treatment.
- Avoid driving or operating heavy machinery if you develop visual disturbances until cleared by a healthcare professional.
Who should not take clomifene
Clomifene is inappropriate for some people and should only be used where a specialist considers it safe. Do not use clomifene if any of the following apply:
- Known pituitary disorders.
- Suspected or confirmed pregnancy, or when breastfeeding.
- Severe liver illness or significant hepatic impairment.
- Known or suspected ovarian cancer.
- Uninvestigated abnormal vaginal bleeding.
- Ovarian cysts unrelated to polycystic ovary syndrome (PCOS) until investigated.
- Active endometriosis requiring other treatment strategies.
- Adrenal gland disorders.
- A prior history of blood clots or major vascular disease.
- Allergy to clomifene or any excipient in the tablet.
Potential indirect effects and cautions
If you experience any of the following serious problems seek urgent medical attention:
- Sudden changes to vision such as blurring, flashes, floaters or double vision.
- Signs of a severe allergic reaction: widespread rash, intense itching, swelling of the face, lips, tongue or throat, or difficulty breathing.
- Symptoms suggestive of ovarian hyperstimulation syndrome (OHSS): severe pelvic or abdominal pain, pronounced bloating, persistent nausea or vomiting, diarrhea, or rapid unexplained weight gain.
- Severe upper abdominal pain with fever or vomiting, which may indicate pancreatitis.
More common and usually milder secondary consequences include:
- Transient heat flashes or heat sensations.
- Headache episode symptoms.
- Nausea with occasional vomiting.
- Mood swings, irritability or low mood.
- Breasts are tender.
- Spotting or irregular bleeding between periods.
If visual problems occur, stop driving and contact your healthcare team straight away. Routine safety measures are listed under metric monitoring and protective measures.
Interaction notes
Ahead of the start clomifene inform your prescriber and pharmacist about all prescription medicines, over-the-counter products, herbal remedies and supplements you are using. Items that may be relevant include:
- Herbal products marketed for fertility or menopausal symptoms such as chasteberry, black cohosh or blue cohosh.
- Hormonal supplements or androgen precursors such as DHEA (prasterone).
- Other medicines, vitamins or minerals that might alter your response or affect monitoring and logging results.
This is not a complete catalog. Keep an updated medicines list and share it at appointments. If unsure, consult a pharmacist before starting any new product. See store and handle procedures for medicine care tips.
Care instructions after missing a dose
If you miss taking a tablet, take it as soon as you remember unless the next scheduled dose is near. If the next dose is due soon, skip the missed tablet and continue the regular schedule. Do not take a second dose to make up for a the medication dose was missed. If several doses are missed in one cycle contact your clinic for advice on whether to continue that cycle.
ODing instructions for safety
If someone has swallowed more clomifene than prescribed contact NHS 111 for clinical advice or seek urgent medical attention. In an emergency call 999 or land at the nearest emergency department. Bring the medicine packaging or a clear list of what was taken if possible.
Temporary data storage solutions include cloud storage, hard drives, and optical media. and care
- Protect tablets from heat, moisture and strong light.
- Store at normal room temperature, typically 15 to 30 C (59 to 86 F).
- Keep all medicines far from children and pets, not in their reach or line of sight.
- Do not use after the expiry date shown on the carton. Return unwanted or out-of-date medicine to a pharmacy for safe disposal.
Choice substitute options and cost guide (UK)
Depending on diagnosis and individual factors your clinician may recommend broadened options to clomifene. Below are common options and very approximate private cost range options in pounds sterling (GBP). These ranges exclude clinic, monitoring and logging and consultation fees and are illustrative only.
- Clomifene (Clomid or generic): private costs often around 15 to 40 GBP for a pack of 10 tablets, depending on brand and pharmacy. NHS prescription charges may apply where relevant.
- Letrozole (Femara or generic): an aromatase inhibitor used increasingly for ovulation induction in PCOS. Private prices for 2.5 mg tablets can range from about 5 to 25 GBP for 10 to 30 tablets.
- Tamoxifen: sometimes used off-label for ovulation induction; generic supplies are frequently inexpensive, often 3 to 15 GBP for a typical supply.
- Injectable gonadotrophins (FSH, hMG): used for selected cases or when oral agents fail. Costs per stimulated cycle are substantially higher, commonly several hundred to over 1000 GBP, excluding clinic procedures and watchful oversight.
- Adjunct measures: metformin for insulin resistance, lifestyle and weight management, and in selected cases surgical options such as ovarian drilling performed at specialist centres.
Notes on price and access:
- Prices vary by brand, pack size, pharmacy and whether you obtain treatment privately or via the NHS.
- In England many patients pay an NHS prescription fee per item. Prescriptions are typically free for residents of Scotland, Wales and Northern Ireland, but fertility funding policies differ across regions.
- When buying online only use UK-registered prescribers and pharmacies listed on the General Pharmaceutical Council register. Buying from unregulated foreign suppliers risks counterfeit or substandard products and may breach UK law. See UK prescription rules and notes pertaining to the law to provide navigational guidance.
Discuss the pros and cons, monitoring needs and likely costs with your fertility clinician before starting any treatment.
UK prescription rules and annotations for legal use
- Clomifene is a prescription-only medicine (POM) in the UK and must be supplied against a valid prescription from an appropriate UK prescriber.
- For online purchases choose UK-registered providers only. Verify the pharmacy on the General Pharmaceutical Council register and corroborate the evidence that prescribers are registered clinicians in the UK. The Medicines and Healthcare products Regulatory Agency (MHRA) offers guidance on safe online medicine buying.
- Importing POMs from abroad can be legally complex. Border authorities may detain or seize improperly imported medicines. Buying from overseas sellers increases the chance of counterfeit or substandard products and can breach British regulatory framework.
- Private prescriptions are paid by the patient. NHS provision and any fertility funding depend on local commissioning policies and clinical eligibility criteria.
- Athletes and people in regulated sport should note additional consequences for non-medical use; consult adapted for fair play and anti-doping in sport measures please refer to the details.
Assists in clean sport and anti-doping compliance
Clomifene is sometimes mentioned in bodybuilding or bodybuilding-related post-cycle routines but this is not an approved clinical use. Under the World Anti-Doping Code and UK Anti-Doping regulations clomifene is prohibited at all times, both in and out of competition. Athletes using clomifene without an approved Therapeutic Use Exemption risk anti-doping rule violations, disqualification and suspension. For current status consult UK Anti-Doping (UKAD) or the Global DRO service.
If clomifene is prescribed for a legitimate medical reason discuss documentation and any need for a Therapeutic Use Exemption with your clinician and sports governing body. For clinical questions see what is clomid and for legal questions see UK prescription rules.
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