Viorele is a combination birth control pill containing two hormones: a progestin called desogestrel (0.15 mg) and a low-dose estrogen called ethinyl estradiol (0.02 mg). It comes in a 28-day pack and works primarily by stopping ovulation, though it also thickens cervical mucus to block sperm and thins the uterine lining. Viorele is one of many brand names for this particular hormone combination, and it’s sometimes prescribed as a generic alternative to Kariva or Azurette.
What’s in the 28-Day Pack
Each Viorele pack contains three types of tablets, color-coded so you can tell them apart. The first 21 are white to off-white active pills, each containing 0.15 mg desogestrel and 0.02 mg ethinyl estradiol. These are the pills that prevent pregnancy.
After those 21 days, you take 2 pale green pills that contain no hormones at all. These are placebo tablets. Then you finish the pack with 5 light yellow pills that contain a very small dose of estrogen (0.01 mg ethinyl estradiol) but no progestin. This low-dose estrogen during the final days is meant to reduce some of the withdrawal symptoms, like headaches or bloating, that can happen during a fully hormone-free interval. Your period typically arrives during this 7-day stretch.
Common Side Effects
The most frequently reported side effects are nausea, headache, breast tenderness, bloating, and weight changes (up or down). Spotting or irregular bleeding is especially common during the first few months as your body adjusts. Some people also experience mood changes, decreased sex drive, or fluid retention in the ankles and feet.
Less common but still documented effects include skin darkening (melasma) that can persist even after stopping the pill, changes in contact lens tolerance due to altered corneal shape, and vaginal yeast infections. Most of these side effects improve within the first two to three cycles.
Blood Clot Risk and Smoking
All combination birth control pills carry a small risk of blood clots, but Viorele’s specific progestin, desogestrel, is classified as a “third generation” progestin. Epidemiologic studies have found that third-generation pills are associated with roughly double the blood clot risk compared to some older formulations. In practical terms, that translates to an additional 1 to 2 cases of venous blood clots per 10,000 women per year of use. The absolute risk remains low for most people, but it’s worth understanding.
Smoking dramatically increases the cardiovascular dangers of any combination pill. If you smoke and are over 35, Viorele is not safe for you. The risk of heart attack, stroke, and blood clots rises with both age and the number of cigarettes smoked. Other factors that compound the risk include high blood pressure, obesity, and diabetes. If you’re scheduled for surgery or expect prolonged immobility (like a long-haul flight or bed rest), the recommendation is to stop the pill at least four weeks beforehand and wait two weeks after to restart.
Who Should Not Take Viorele
Beyond smokers over 35, Viorele is contraindicated for people with a current or past history of blood clots in the legs or lungs, stroke, coronary artery disease, or certain heart valve conditions. Uncontrolled high blood pressure or high blood pressure with vascular damage also rules it out. People with diabetes who are over 35, or who have diabetes with vascular complications or a duration longer than 20 years, should not use it.
Migraines are a notable concern. If you get migraines with aura (visual disturbances, numbness, or speech changes before the headache), Viorele is not recommended at any age. If you’re over 35, even migraines without aura are a contraindication. Current or past breast cancer, liver tumors, active hepatitis, and severe cirrhosis are also on the list. Certain hepatitis C drug combinations can cause dangerous liver enzyme elevations when taken alongside combination pills.
What to Do if You Miss a Pill
If you take a pill late but it’s been less than 24 hours, just take it as soon as you remember and continue with your regular schedule. No backup protection is needed.
If you miss one pill entirely (24 to 48 hours late), take it as soon as possible, even if that means taking two pills in one day. You’re still protected and don’t need backup contraception.
Missing two or more pills in a row (48 hours or more since your last pill) is where things get more complicated. Take the most recent missed pill right away and discard any other missed ones. Continue the rest of the pack on schedule, but use condoms or abstain for the next 7 days. If the missed pills were in the last week of active tablets (roughly days 15 through 21), skip the placebo and low-dose estrogen pills entirely and start a new pack immediately to maintain protection. If you had unprotected sex during the first week of the pack after missing pills, emergency contraception is worth considering.
Medications That Reduce Effectiveness
Several drugs speed up how your liver processes hormones, which can make Viorele less effective. The most significant is rifampin, an antibiotic used for tuberculosis, which has a well-documented interaction. Certain anti-seizure medications also reduce effectiveness, including carbamazepine, phenytoin, oxcarbazepine, topiramate, and felbamate.
St. John’s wort, a popular herbal supplement for mood, is another known culprit. Even some antibiotics like ampicillin and tetracyclines have been loosely associated with reduced pill effectiveness, though the evidence there is weaker. The antifungal griseofulvin and the blood pressure medication bosentan are also on the list. If you’re prescribed any of these, backup contraception is a good idea for the duration of treatment and for a period afterward.
Other Brand Names for the Same Formula
Viorele is a generic, and the same desogestrel/ethinyl estradiol combination is sold under many names. Kariva, Azurette, Bekyree, Kimidess, and Simliya all share Viorele’s specific formulation with the 21 active pills, 2 placebo pills, and 5 low-dose estrogen pills. Other desogestrel-containing pills like Apri, Desogen, Reclipsen, and Enskyce use the same active hormones but may differ in their inactive pill setup (typically 7 placebos instead of the 2-plus-5 arrangement). If your pharmacy switches you between these brands, the active hormone doses are the same, though the inactive ingredients and pill colors will differ.