Metronidazole helps treat trichomoniasis in men and women within 7 days. Request metronidazole online today from Asda Online Doctor.
Trichomoniasis is a sexually transmitted infection (STI) that can be cured with metronidazole. The antibiotic in metronidazole tablets kills the parasite trichomonas vaginalis to clear your trichomoniasis infection.
Each metronidazole tablet contains 400mg of the antibiotic metronidazole and is made by Milpharm in the UK. Metronidazole is the generic version of the brand name medicine Flagyl.
To treat trichomoniasis, you need to take 1 metronidazole tablet twice a day for 7 days. You should have metronidazole with food, and you cannot drink alcohol while you’re taking it.
You can request a metronidazole treatment course today from Asda Online Doctor. First, fill out a short and confidential online questionnaire. Your answers will be reviewed by one of our doctors to check if metronidazole is right for you. Then, we can deliver a pack of metronidazole to your home, or you can collect it from a nearby Asda Pharmacy.
5 tablet(s) - £14.00
14 tablet(s) - £23.00
How to take metronidazole
To treat trichomoniasis, you should take 1 metronidazole twice a day for 7 days. Every time you need to take metronidazole you should:
- have some food before you take your metronidazole tablet.
- swallow your metronidazole tablet whole with a glass of water.
- avoid drinking any alcohol before, during or after you take your metronidazole tablet.
You should complete your 7 day metronidazole treatment course, even if you feel better after a few days. If you do not complete your course, the trichomoniasis infection can come back and you may become unwell.
After you complete your 7 day metronidazole treatment course, you have to wait 2 more days before you can start to drink alcohol again.
If you forget to take your metronidazole tablet:
- take your metronidazole tablet as soon as you remember
- do not take 2 tablets of metronidazole to make up for a tablet you forgot
You can find more details about how to take metronidazole in the patient information leaflet.
Metronidazole is an antimicrobial that kills bacteria and parasites. It’s used to treat a sexually transmitted disease (STD) called trichomoniasis.
Trichomoniasis is caused by the parasite trichomonas vaginalis and can be passed from person to person during sex. If you have trichomoniasis, you need to treat it with metronidazole because it will not go away on its own, and you can spread it to other people.
Whether you’re male or female, a trichomoniasis infection can make:
- your genitals feel itchy and sore
- you have discharge from your vagina or penis
- you have a burning sensation when you pee
- sex feel painful
You can also use metronidazole as an effective treatment for other infections like:
- rosacea on your skin
- tooth abscesses in your mouth
- bacterial infections in your vagina (bacterial vaginosis)
- ulcers or pressure sores
- Helicobacter pylori in your stomach
- colitis in your colon
- diarrhoea caused by giardiasis or clostridium in your gut
- pelvic inflammatory disease
To treat different types of infections, metronidazole comes in other forms such as a:
- intravenous injection (in hospital only)
Metronidazole works as an antiprotozoal to kill the trichomoniasis, which is a type of parasite called a protozoa. As an antibacterial, metronidazole also kills bacteria deep inside your body that do not need oxygen to stay alive.
When a parasite or bacteria causes an infection, metronidazole stops them from creating the DNA they need to multiply and spread. As a result, the microorganisms soon die out, and you start to feel better as the infection goes away.
You can take metronidazole to treat trichomoniasis if you are not allergic to nitroimidazoles or any other ingredients in metronidazole tablets.
Talk to you your doctor before taking metronidazole if you have:
- liver disease
- kidney disease or need regular kidney dialysis
- central nervous system problems
- peripheral neuropathy
Pregnancy and breastfeeding
If you’re pregnant or trying for a baby, you need to speak to a doctor for advice on whether metronidazole is safe for you to take.
If you’re breastfeeding, you need to speak to a doctor before taking metronidazole as it can pass into breast milk.
During your trichomoniasis treatment course, metronidazole can cause side effects such as:
- vomiting or feeling sick
- metal taste in your mouth
- feeling dizzy or sleepy
You should avoid driving and try to drink plenty of water to stay hydrated while taking metronidazole tablets. You should not drink alcohol while taking metronidazole tablets during your 7 day course and for 2 days after you complete it.
Signs of an allergic reaction to metronidazole tablets include:
- shortness of breath
- wheezing and difficulty breathing
- face and neck swelling
If you experience any of the above, you need to call 999 straight away as it is a medical emergency.
Metronidazole drug interactions
Metronidazole can interact with other drugs or medicines, and this can affect how the treatment works. Tell your doctor if you’re taking:
- blood thinners (anticoagulants), such as warfarin, aspirin or apixaban
- epilepsy medications, such as phenytoin, primidone or phenobarbital
- 5 fluorouracil to treat cancer
- busulfan to treat leukaemia
To find out more, take a look at the patient information leaflet in your pack of metronidazole.
If you get any side effects after taking metronidazole, you can report them using the MHRA Yellow Card Scheme online or on Google Play or the Apple App Store.
Which active ingredients does metronidazole contain?
The active ingredient in each metronidazole tablet is 400mg metronidazole.
Other ingredients in metronidazole tablets include povidone, magnesium stearate, colloidal anhydrous silica and maize starch.
Please check the patient information leaflet for any updates to the ingredients list of generic metronidazole tablets.
How should metronidazole be disposed of?
You can dispose of metronidazole by taking any unwanted or unused tablets to your local pharmacy. To help protect the environment, do not throw your metronidazole tablets in a sink, toilet or bin at home.
How should metronidazole be stored?
You should store metronidazole tablets in a cool area that is less than 25°C. Protect your metronidazole tablets from light by storing them in their original box.
What does metronidazole look like?
Metronidazole tablets look like white round tablets with MZ 400 written on one side.
In which pack sizes is metronidazole available?
Metronidazole comes in a blister strip of 7 or 14 tablets. A trichomoniasis treatment course is a pack of 14 metronidazole tablets.
Information on the manufacturer
The marketing authorisation holder of metronidazole is Milpharm Limited, Ares, Odyssey Business Park, West End Road, South Ruislip, HA4 6QD United Kingdom.
Metronidazole is manufactured by:
- Milpharm Limited (Ares, Odyssey Business Park, West End Road, South Ruislip, HA4 6QD United Kingdom)
- APL Swift Services (Malta) Ltd. (HF26, Hal Far Industrial Estate, Hal Far, Birzebbugia BBG 3000)
Dr Kathryn Basford
Dr Kathryn Basford is a qualified GP who works as a GP in London, as well as with ZAVA. She graduated from the University of Manchester and completed her GP training through Whipps Cross Hospital in London.Meet our doctors
Article created: 08 Oct 2021
Last reviewed: 08 Oct 2021