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Clomid® 50mg Tablets – patient leaflet, side effects, dosage

Last updated: · Text from the MHRA, as of · About this document

Medicine status: Prescription only (POM) Details

Medicine strength:
50 mg
Contains active substance:
ATC code:

Patient leaflet - Clomid 50 mg tablets

1. What Clomid is and what it is used for

Clomid contains a medicine called clomifene citrate. This belongs to a group of medicines called ovulation stimulants. It works by stimulating the release of eggs from the ovary (ovulation). Clomid is used for some types of infertility, in women who are not ovulating properly.

2. What you need to know before you take Clomid

Before you take the medicine talk to your doctor about the risks of:

Becoming pregnant with more than one child at the same time (multiple pregnancies).

Pregnancies where the baby grows outside of the womb (ectopic). Any pregnancy could lead to birth defects or miscarriage. This can happen even if you are not taking Clomid. You should talk to your doctor about the possible risks before you take Clomid.

Do not take this medicine if:

× You are allergic (hypersensitive)

to clomifene or any of the other ingredients of Clomid (listed in section 6).

Signs of an allergic reaction include: a rash, swallowing or breathing problems, swelling of your lips, face, throat or tongue.

× You have or ever had liver disease. × You have unusual menstrual bleeding where the cause is not known. × You have a type of cancer that is made worse by hormones.

× You have a cyst on your ovary. × You are pregnant. You should have a test to make sure you are not pregnant before you take Clomid. Do not take this medicine if any of the above apply to you.

Warnings and precautions Talk to your doctor or pharmacist before taking your medicine if:

You are having an early menopause or have been told you are infertile. You have stopped having periods because you are under-weight. You have had fits or seizures in the past.

You have ‘fibroids’ in your womb.

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You have ‘polycystic’ ovaries. Your ovaries are swollen.

You have hypertriglyceridemia (an excess of fats in the blood) or a family history of hypertriglyceridemia. Your doctor should check for any other causes of fertility problems before starting treatment with Clomid. If you are not sure if any of the above apply to you, talk to your doctor or pharmacist before taking Clomid.

Other medicines and Clomid

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. This includes medicines you buy with a prescription, including herbal medicines. This is because Clomid can affect the way some other medicines work. Also some medicines can affect the way Clomid works.

Pregnancy and breast-feeding

  • Do not take this medicine if you

    are pregnant or think you may be pregnant.

  • Talk to your doctor before taking this

    medicine if you are breast-feeding or planning to breast-feed. Clomid can lower the amount of milk produced. Ask your doctor or pharmacist for advice before taking any medicine if you are pregnant or breast-feeding.

    Driving and using machines

You may notice problems with your eyesight such as blurred vision while taking this medicine. If this happens, do not drive or use any tools or machines. Clomid contains lactose and sucrose

This medicine contains lactose and sucrose, which are types of sugar. If you have been told by your doctor that you cannot tolerate some sugars, talk to your doctor before taking Clomid.

3. How to take Clomid

Always take Clomid exactly as your doctor has told you. You should check with your doctor or pharmacist if you are not sure.

Taking this medicine

  • Take this medicine by mouth.
  • Swallow the tablets whole with a drink of water. Do not crush or chew your tablets.
  • Do not take more than two tablets in one day.
  • Do not take the tablets for more than five days at a time.
  • If you feel the effect of your medicine is not working, do not change the dose yourself, but ask your doctor. The usual dose is:

Adult women only:

  • Your doctor will tell you when in your menstrual cycle to start taking the tablets.
  • For the first course of treatment, take one tablet a day for five days.
  • If you do not have a period after the first course of treatment your doctor will increase your dose to two tablets a day for five days.
  • You should start this second course at least 30 days after the first course.
  • You will not usually take more than three courses of treatment. If ovulation does not happen after three courses talk to your doctor. This medicine should not be taken by children, adolescents, men or women who have already gone through the menopause (post-menopausal). If you take more Clomid than you should

If you take more Clomid than you should, tell a doctor or go to a hospital casualty department straight away. Take the medicine pack with you. This is so the doctor knows what you have taken. You are likely to get over-stimulation of your ovary (see section 4).

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If you forget to take Clomid

If you forget a dose, talk to your doctor as you may need to change your treatment cycle. Do not take a double dose to make up for a forgotten tablet. If you stop taking Clomid

Keep taking Clomid until your doctor tells you to stop. If you stop, the treatment may not work.

If you have any further questions on the use of this product, ask your doctor or pharmacist.

4. Possible side-effects

Like all medicines, Clomid can cause side effects, although not everybody gets them. Stop taking Clomid and see your doctor or go to a hospital straight away if you notice any of the following serious side effects – you may need urgent medical treatment:

  • You have an allergic reaction (such

    as anaphylaxis and angioedema). Symptoms may include: a rash, itching, difficulty breathing,

    shortness of breath, swelling of your face, lips, throat or tongue, cold clammy skin, palpitations, dizziness, weakness or fainting.

  • You have numbness, weakness or

    paralysis on one side of your body, slurred speech, sudden blurred vision, confusion or unsteadiness. These could be signs of a stroke.

  • Over-stimulation of the ovary.

    This can lead to pain in the pelvis, stomach or calves, swelling or feeling bloated, passing less urine, difficulty in breathing or an increase in weight. If this happens, your doctor may lower your dose of Clomid.

  • Eye symptoms may include blurring

    of vision or spots or flashes in front of the eyes, difficulty in reading, blindness (partial or complete loss of vision), double vision and eye pain. These symptoms usually get better but in some cases they may be

    permanent. Your doctor may send you for an eye examination.

    • Liver problems that may cause the eyes or skin to go yellow (jaundice) • Sudden and severe headaches • Mental illness such as ‘psychosis’ Tell your doctor or pharmacist if any of the following side effects get serious or lasts longer than a few days:
    • Increased pain with periods, heavy periods or bleeding between periods
    • Pain in the lower part of the

      stomach. This could be a sign of endometriosis or worsening of endometriosis, or enlarged ovaries.

    • Thinning of the layer covering the inside of the uterus
    • Increased levels of fat in the blood

      (hypertriglyceridaemia) which may also cause inflammation of the pancreas.

    • Pain in the upper middle or upper left part of the abdomen. This could be a sign of inflammation of the pancreas (pancreatitis).
    • Cloudy lenses in the eye (cataracts)
    • Fits, feeling faint, disorientated or more tense than normal. Also, balance problems or feeling dizzy (vertigo).
    • Feeling tired or difficulty in sleeping

      (insomnia), depression or change in moods or behaviour

    • Rapid or irregular heartbeat • Speech problems
    • Skin rash or itching
    • Feeling or being sick
    • Flushing of the skin
    • Headaches
    • Swelling of the face, around the eyes, lips or tongue
    • Painful breasts
    • Hair loss or thinning
    • Increased levels of liver enzymes shown up in blood tests. This can mean that your liver is not working properly.
    • Numbness or tingling on your skin

      (paraesthesia)

    • Feeling anxious
    • Feeling more nervous than usual 3

There have been rare reports of ovarian cancer with fertility drugs.

Reporting of side effects

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in the leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.

5. How to store Clomid

Keep out of sight and reach of children. Store in original container below 25°C. Do not use Clomid after the expiry date which is stated on the carton. The expiry date refers to the last day of that month.

Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

6. Contents of the pack and other information

What Clomid contains

  • Each tablet contains 50mg of the

    active substance, clomifene citrate.

  • The other ingredients are sucrose,

    lactose, soluble starch, maize starch, magnesium stearate, iron oxide yellow (E172), purified water. What Clomid looks like and contents of the pack

Clomid 50mg Tablets are beige and round marked with M in two circles. They are supplied in PVC and

aluminium blister packs. Pack sizes 5, 30 or 100 tablets.

Not all pack sizes may be marketed.

Marketing Authorisation Holder and Manufacturer

Marketing Authorisation Holder Fidia Pharma UK Ltd,

170 Edmund Street, Ground Floor Birmingham, B3 2HB, UK

Tel: 0121 468 2143

email: medinfo@fidiapharma.uk Manufacturer

7126690 4

IST13000051-A Patheon France

40 Boulevard de Champeret

38300 Bourgoin-Jallieu

France

This leaflet does not contain all the information about your medicine. If you have any questions or are not sure about anything, ask your doctor or pharmacist.

This leaflet was last revised in June 2025

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 56485/0005

Last revision stated in the text: June 2025 · MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Clomid 50 mg tablets

Prescription needed? Yes, prescription-only medicine (POM)
Active substance Clomifene
Strength 50 mg
Pharmaceutical form Oral tablet
How is it taken Oral
Excipients Sucrose, Lactose, Soluble starch, Maize starch, Magnesium stearate, Iron oxide yellow E172, Purified Water
Pack sizes 5 tablet
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life 3 years.
Storage Store in original container, do not store above 25°C.
Drug group (ATC) Ovulation stimulants, synthetic
  1. G Genito urinary system and sex hormones
    1. G03 Sex hormones and modulators of the genital system
      1. G03G Gonadotropins and other ovulation stimulants
        1. G03GB Ovulation stimulants, synthetic
          1. G03GB02 clomifene
Marketing authorisation PL 56485/0005 (first authorised 29 September 1995)
Marketing authorisation holder Fidia Pharma UK Ltd
Codes GTIN 5000283663225 · BNF 06050100

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.2.0 of 19 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.