To use Cyred correctly, follow these general steps:
- Start the Pack: Begin taking Cyred on the first day of your menstrual cycle (the first day of bleeding). This is known as the Day 1 start. Alternatively, you may start on any day of the menstrual cycle, but this requires additional contraception for the first seven days.
- Take One Tablet Daily: Take one tablet every day, at the same time each day. Try to take it at the same time each day to help remember.
- After 21 Days: After finishing the 21 active tablets, take a 7-day break. During this break, you will have a withdrawal bleed (similar to a period). Do not skip this break.
- Start a New Pack: After the 7-day break, begin the next pack on the 8th day, regardless of whether or not bleeding has occurred.
- Missed Dose: If you miss a dose, take it as soon as you remember. If you miss two or more doses, follow the instructions in the package insert or consult your healthcare provider.
Remember to use an additional form of contraception (like condoms) if you miss doses or experience vomiting or diarrhea, as these can reduce the effectiveness of Cyred.
Cyred works through a combination of hormonal mechanisms to prevent pregnancy. The two active ingredients, ethinylestradiol (estrogen) and desogestrel (progestin), work in the following ways:
- Inhibition of Ovulation: The primary mechanism of action is the suppression of ovulation. Both hormones work to prevent the ovaries from releasing an egg during the menstrual cycle. Without ovulation, fertilization cannot occur.
- Thickening of Cervical Mucus: Cyred increases the viscosity (thickness) of the mucus in the cervix, making it harder for sperm to enter the uterus and reach an egg.
- Changes to the Uterine Lining: The medication causes the lining of the uterus (endometrium) to become thinner, which makes it less likely for a fertilized egg to implant and grow.
By working through these mechanisms, Cyred effectively prevents pregnancy when taken as directed.
Like all medications, Cyred can cause side effects, although not everyone will experience them. Some common side effects include:
- Nausea: Some users may experience nausea or vomiting, especially during the first few months of use.
- Breast Tenderness: Swelling or tenderness in the breasts is common and often temporary.
- Headaches: Some users may experience headaches or migraines.
- Mood Changes: Hormonal contraceptives like Cyred can sometimes affect mood, causing feelings of irritability, depression, or anxiety.
- Spotting or Breakthrough Bleeding: Irregular bleeding or spotting between periods is common, particularly during the first few months of use.
- Weight Changes: Some users report mild weight gain or fluid retention.
Serious but rare side effects can include:
- Blood Clots: Hormonal contraceptives like Cyred may increase the risk of deep vein thrombosis (DVT), pulmonary embolism (PE), or stroke, especially in women with other risk factors.
- Heart Attack or Stroke: There is an increased risk of heart attack and stroke, particularly in women who smoke, are over 35 years old, or have underlying health conditions.
- Liver Disease: Very rarely, Cyred can cause liver problems. Any signs of jaundice (yellowing of the skin or eyes) should be reported immediately.
Before starting Cyred, it is important to consider the following warnings and precautions:
- Smoking: Smoking increases the risk of serious cardiovascular side effects, such as heart attack and stroke, especially in women over 35. If you smoke, discuss alternative contraceptive methods with your healthcare provider.
- Blood Clots: Cyred may increase the risk of blood clots, particularly in women with a history of clotting disorders or certain health conditions. Women who have had a previous blood clot, stroke, or heart attack should not use Cyred.
- High Blood Pressure: If you have high blood pressure or a family history of cardiovascular disease, discuss this with your healthcare provider before using Cyred.
- Pregnancy: Cyred should not be used during pregnancy. If you become pregnant while taking Cyred, stop taking it immediately and consult your doctor.
- Liver Disease: If you have a history of liver disease, you should not use Cyred, as it can worsen liver function.
Cyred can interact with other medications, potentially reducing its effectiveness or increasing the risk of side effects. Some common interactions include:
- Antibiotics: Certain antibiotics (such as rifampin or penicillins) may reduce the effectiveness of Cyred. It is recommended to use additional contraception methods if taking antibiotics while on Cyred.
- Anticonvulsants: Some anticonvulsant medications (like phenytoin or carbamazepine) may also lower the effectiveness of birth control pills.
- Antifungal Medications: Certain antifungals, such as griseofulvin, can interact with Cyred and reduce its effectiveness.
- Herbal Products: St. John’s Wort, a common herbal supplement, can reduce the effectiveness of birth control pills, so caution is advised.
Always inform your doctor of any other medications, including over-the-counter drugs and herbal supplements, to avoid interactions.
The recommended dosage of Cyred is one tablet taken daily for 21 consecutive days, followed by a 7-day break. After the 7-day break, start a new pack of tablets on the 8th day, regardless of whether or not bleeding has occurred.
If you miss one tablet, take it as soon as you remember. If you miss two or more tablets, follow the instructions provided in the product leaflet or consult your doctor for guidance on how to proceed.
Cyred is a prescription-only medication. A healthcare provider will evaluate your medical history, including any contraindications or risks, to determine if Cyred is an appropriate contraceptive option for you. Follow-up appointments may be needed to monitor side effects and ensure the medication is working effectively.