Metronidazole
Arilin rapid is a medicine in the form of vaginal capsules containing metronidazole - a chemotherapeutic agent from the nitroimidazole group. In susceptible anaerobic bacteria, as well as in some protozoa, after its administration, there is an inhibition of nucleic acid synthesis, and thus the death of microorganisms. It has not been found that microorganisms resistant to antibiotics are also resistant to metronidazole (there is no cross-resistance). Arilin rapid is indicated for use in trichomoniasis or non-specific bacterial vaginitis.
Before starting to use Arilin rapid, the patient should discuss it with their doctor or pharmacist, especially if they have:
If the patient experiences any of the following symptoms during the use of Arilin rapid, they should immediately seek medical help and stop taking the medicine. See also section 4. Possible side effects.
During the use of metronidazole in patients with Cockayne syndrome, cases of severe hepatotoxicity (acute liver failure), including cases resulting in death, have been reported. In patients with Cockayne syndrome, the doctor should monitor liver function during and after treatment with metronidazole. The patient should immediately inform their doctor and stop taking metronidazole if they experience any of the following symptoms: abdominal pain, loss of appetite, nausea, vomiting, fever, malaise, fatigue, jaundice, dark urine, clay-colored or loose stools, or skin itching. Metronidazole should not be used for more than 10 days, except in special situations. Treatment may be repeated very rarely, as it cannot be ruled out that it may damage human primary sex cells. Additionally, in animal studies, the development of various tumors has been observed. Arilin rapid may cause damage to latex products (e.g., condoms, vaginal caps), thereby reducing their effectiveness.
The patient should tell their doctor or pharmacist about all medicines they are currently taking or have recently taken, as well as any medicines they plan to take. The following interactions have been observed after systemic administration of metronidazole (oral, rectal, or intravenous). Blood thinners from the coumarin group (e.g., warfarin, acenocoumarol). The doctor should carefully monitor coagulation parameters, as metronidazole increases blood coagulability and may require an increase in the dose of the blood thinner. Lithium. During concurrent use with metronidazole, an increase in lithium serum concentration has been observed. Barbiturates and phenytoin reduce the effectiveness of metronidazole. Cimetidine may, in individual cases, affect the elimination of metronidazole from the body, thereby increasing its serum concentration. After administration of silymarin/silibinin (active substances used in the treatment of liver poisoning), a decrease in the effectiveness of Arilin rapid has been observed. Medicines containing diosmin (an active substance used in the treatment of vein diseases) may increase the concentration of metronidazole in the blood, thereby enhancing its effect and/or side effects. When cyclosporine (a medicine that suppresses or weakens the immune response) and Arilin rapid are administered concurrently, the cyclosporine serum concentration may be elevated. Therefore, cyclosporine and creatinine serum levels should be closely monitored. The toxic effect of 5-fluorouracil (a chemotherapeutic agent used in the treatment of tumors) is increased, as its elimination is reduced when administered concurrently with Arilin rapid. The toxic effect of busulfan (a chemotherapeutic agent) may be significantly enhanced. Effect on the results of some laboratory tests. Metronidazole may decrease the results of aspartate aminotransferase (AST) activity measurements in serum. Concurrent administration of metronidazole and tacrolimus (a medicine that prevents transplant rejection) leads to an increase in tacrolimus blood concentration. Therefore, tacrolimus blood concentration and kidney function should be frequently monitored. Concurrent use of metronidazole and amiodarone (a medicine used in the treatment of heart rhythm disorders) may affect heart function. Therefore, heart function should be regularly monitored by performing an ECG. The patient should consult their doctor if they observe symptoms of heart rhythm disorders, such as dizziness, palpitations, or short-term fainting. When metronidazole is administered concurrently with antibiotics, the availability of mycophenolate mofetil (a medicine that suppresses the immune system) in the body may be reduced. Therefore, it is recommended to monitor this concurrently through laboratory tests.
Alcohol consumed during the use of metronidazole may increase the risk of side effects, such as flushing of the skin and neck, nausea, vomiting, headaches, and dizziness (an effect similar to disulfiram). The patient should not drink alcohol during and within 48 hours after the end of Arilin rapid treatment, as signs of alcohol intolerance may occur after vaginal administration of metronidazole.
If the patient is pregnant or breastfeeding, thinks they may be pregnant, or plans to have a child, they should consult their doctor or pharmacist before using this medicine. Arilin rapid should not be used during the first trimester of pregnancy (if the woman could be pregnant, a pregnancy test should be performed before starting treatment). In the second and third trimesters of pregnancy, Arilin rapid can be used only if, in the doctor's opinion, it is necessary, and other treatment methods are ineffective or contraindicated. During breastfeeding, Arilin rapid should not be used. If its use is necessary, breastfeeding should be discontinued. If the patient has taken a single dose of the medicine, breastfeeding should be discontinued for 24 hours, and the milk should be expressed and discarded during this time.
Arilin rapid may affect reaction speed and, consequently, the ability to drive vehicles and operate machines. The greatest impact may occur at the beginning of treatment and when the patient concurrently consumes alcohol. Consuming alcohol during the use of metronidazole may increase the risk of side effects, such as flushing of the skin and neck, nausea, vomiting, headaches, and dizziness.
This medicine should always be used according to the doctor's recommendations. In case of doubts, the patient should consult their doctor or pharmacist. In primary infections, the administration of one capsule (i.e., 1000 mg of metronidazole) is sufficient. In severe and recurrent infections, a two-day treatment (one capsule for two days) is recommended. The capsules should be inserted deep into the vagina, preferably in the evening, lying on the back with slightly bent legs.
After oral administration of a dose of up to 15 g of metronidazole, nausea, vomiting, hyperreflexia (increased reflexes), ataxia (loss of coordination), tachycardia (rapid heart rate), shortness of breath, and confusion have been observed. No deaths have been reported. There is no specific antidote. Complete disappearance of symptoms has been observed after a few days of symptomatic treatment. If a higher than recommended dose of the medicine is taken, the patient should consult their doctor.
Like all medicines, Arilin rapid can cause side effects, although they do not occur in every patient. After vaginal administration, only 20% of metronidazole is absorbed into the bloodstream; therefore, side effects during treatment with Arilin rapid are rare. The following side effects have been observed during systemic administration of metronidazole (oral, rectal, or intravenous).
Infrequent(occurred in 1 to 10 out of 1000 patients):
Rare(occurred in less than 1 out of 1000 patients):
Very rare(occurred in less than 1 out of 10,000 patients):
Frequency not known(cannot be determined based on available data):
If any side effects occur, including any side effects not listed in this leaflet, the patient should inform their doctor, pharmacist, or nurse. Side effects can be reported directly to the Department of Monitoring of Adverse Reactions to Medicinal Products of the Office for Registration of Medicinal Products, Medical Devices, and Biocidal Products, Al. Jerozolimskie 181C, 02-222 Warsaw, Tel.: +48 22 49 21 301, Fax: +48 22 49 21 309, website: https://smz.ezdrowie.gov.pl. By reporting side effects, more information can be collected on the safety of the medicine.
The medicine should be stored in a place invisible and inaccessible to children. It should not be stored at a temperature above 25°C. The medicine should not be used after the expiration date stated on the packaging. The expiration date indicates the last day of the specified month. Medicines should not be disposed of in the sewage system or household waste containers. The patient should ask their pharmacist how to dispose of unused medicines. This will help protect the environment.
Arilin rapid is a medicine in the form of beige, torpedo-shaped vaginal capsules. The packaging contains 2 capsules in a blister pack and a leaflet. For more detailed information, the patient should contact the marketing authorization holder or parallel importer.
Dr August Wolff GmbH & Co. KG Arzneimittel, Sudbrackstrasse 56, 33611 Bielefeld, Germany
Dr August Wolff GmbH & Co. KG Arzneimittel, Sudbrackstrasse 56, 33611 Bielefeld, Germany
Delfarma Sp. z o.o., ul. Św. Teresy od Dzieciątka Jezus 111, 91-222 Łódź
Delfarma Sp. z o.o., ul. Św. Teresy od Dzieciątka Jezus 111, 91-222 Łódź, Marketing authorization number in Bulgaria, the country of export: 20000474
Date of leaflet approval:07.07.2023
[Information about the trademark]
Discuss dosage, side effects, interactions, contraindications, and prescription renewal for Arilin rapid – subject to medical assessment and local rules.