Crinone (progesterone) is a vaginal gel that's used in fertility treatments. It's also used to help restart menstrual periods. This medication contains progesterone, which is a hormone that's naturally made in the body. You insert Crinone (progesterone) into the vagina using a prefilled applicator. For fertility, it's inserted once or twice a day. And for menstrual periods, the medication is inserted every other day. Some possible side effects include headache, stomach pain, and vaginal discharge.
Lack of menstrual periods
Crinone (progesterone) contains the natural sex hormone progesterone. This medication restarts menstrual periods by helping to balance the natural levels of progesterone in the body. And when it's used for fertility treatments, Crinone (progesterone) prepares the uterus to receive and nourish an embryo.
Source: DailyMed
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Rare
Signs of toxic shock syndrome—for cervical caps or diaphragms
Chills
confusion
dizziness
lightheadedness
muscle aches
sunburn-like skin rash that is followed by peeling of the skin
unusual redness of the inside of the nose, mouth, throat, vagina, or eyelids
Check with your doctor as soon as possible if any of the following side effects occur:
Rare
For females and males
Skin rash, redness, irritation, or itching that does not go away within a short period of time
For females only
Cloudy or bloody urine
increased frequency of urination
pain in the bladder or lower abdomen
thick, white, or curd-like vaginal discharge—with use of cervical caps or diaphragms only
vaginal irritation, redness, rash, dryness, or whitish discharge
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Less common
Vaginal discharge (temporary)—with use of creams, foams, and suppositories
vaginal dryness or odor
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
Comes with easy-to-use, prefilled applicators
Used less often than the alternative progesterone vaginal insert
Might cause breast growth and breast pain
Might be uncomfortable to use for some
Can cause messy discharge, so you might need to wear panty liners
Not available as a lower-cost generic
Crinone (progesterone) is available as a vaginal gel that comes in two different strengths: 4% and 8%. Using more of the 4% gel isn't the same as using the 8% strength. Don't use more Crinone (progesterone) than what your prescriber tells you.
For fertility treatment: It's important to use Crinone (progesterone) for as long as prescribed. This helps raise your chances of getting and staying pregnant. Don't stop using this medication earlier than instructed. Tell your prescriber right away if you have any irregular menstrual bleeding; this can be a sign of a possible miscarriage.
It's normal to see small, white drops in your vaginal discharge a few days after you use Crinone (progesterone). This is leftover gel that builds up after the medication has been absorbed. Wear a panty liner while you're using Crinone (progesterone) to help prevent this vaginal discharge from getting on your underwear.
Don't use any other vaginal products within 6 hours of using Crinone (progesterone). Other vaginal products can affect how well the medication works.
Take out the Crinone (progesterone) prefilled applicator from its packaging. Slide the plunger into the open end of the applicator, and then carefully remove the cap without pushing on the plunger.
Lie on your back with your knees bent. Gently insert the applicator as far as you comfortably can into your vagina. Then, press the plunger all the way down to release the gel. Once you insert the medication into the vagina, you don't have to stay lying down.
After you remove the applicator from your vagina, throw it away into the trash. It's okay if you see a small amount of gel left in the applicator.
Crinone (progesterone) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.
Risk factors: History of blood clots
Tell your prescriber before you start treatment with Crinone (progesterone) if you have a history of blood clots or medical problems caused by a blood clot (e.g., heart attack, stroke). You can't use this medication if you've had any kind of blood clot before.
Be aware of the signs and symptoms of a blood clot. Blood clots can sometimes lead to serious problems like heart attack or stroke. Call 911 or seek medical attention right away if you have pain in your legs or arms, chest pain, sudden severe headaches, trouble breathing, or sudden changes in your speech or vision. These can be signs of a blood clot.
Some fertility specialists might use progesterone and other forms of progesterone to help prevent a miscarriage (pregnancy loss). Crinone (progesterone) isn't FDA-approved to prevent miscarriages and hasn't been proven to work well for this purpose. Speak with your prescriber about your options for preventing miscarriages and follow your prescriber's recommendations very carefully.
Risk factors: Heart failure | Kidney problems
It's possible for Crinone (progesterone) to cause extra fluid to build up in your body, especially in your legs, ankles, and feet. This is because progesterone plays a role in regulating fluid levels in the body.
Fluid buildup might be more likely to happen if you have certain medical conditions, like kidney problems or heart failure. The extra fluid can also worsen these conditions. Tell your prescriber if you have problems with fluid buildup or swelling before you start using Crinone (progesterone). Call your prescriber or get medical help right away if you notice unexplainable swelling, rapid weight gain, or sudden trouble breathing.
Risk factors: History of depression
Progesterone might play a role in causing negative emotions like depression. Research suggests that it's more likely due to changing progesterone levels in the body, such as during treatment with Crinone (progesterone). Tell your prescriber if you have or have had depression. Be aware of any changes in your mood or worsening symptoms of depression like feelings of hopelessness, fear, or despair. Speak to your prescriber if this happens while you're using Crinone (progesterone).
Risk factors: Diabetes or prediabetes
Progesterone can raise blood sugar levels. If you have diabetes, it's possible for Crinone (progesterone) to make it harder for you to control your blood sugar. Let your prescriber know if you have diabetes or any problems with your blood sugar levels before you start using this medication.
Fertility treatment: Insert 1 applicatorful (90 mg) of the 8% gel into your vagina 1 to 2 times a day. Your prescriber might recommend that you continue using the medication for up to 10 to 12 weeks if you successfully become pregnant.
Lack of menstrual periods: Insert 1 applicatorful (45 mg) of the 4% gel into your vagina every other day for up to 6 doses. If needed, the dose can be raised to 1 applicatorful (90 mg) of the 8% gel every other day for up to 6 doses.
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking any of these medicines, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using medicines in this class with any of the following medicines is not recommended. Your doctor may decide not to treat you with a medication in this class or change some of the other medicines you take.
Using medicines in this class with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Abnormal vaginal bleeding that hasn't been evaluated by a healthcare professional
Blood clotting problems
Lack of menstrual periods
Lack of menstrual periods due to hormone imbalance
Abnormal bleeding from the uterus due to hormone imbalance
By signing up, I agree to GoodRx's Terms and Privacy Policy, and to receive marketing messages from GoodRx.
Allergan, Inc. (2024). Crinone- progesterone gel [package insert]. DailyMed.
Lee, S. R., et al. (2020). Progesterone increases blood glucose via hepatic progesterone receptor membrane component 1 under limited or impaired action of insulin. Scientific Reports.
Stachenfeld, N. S. (2008). Sex hormone effects on body fluid regulation. Exercise and Sport Sciences Reviews.
Stefaniak, M., et al. (2023). Progesterone and its metabolites play a beneficial role in affect regulation in the female brain. Pharmaceuticals.
World Health Organization. (n.d.). Clinical services Recommendation 31: Medical management of missed abortion at gestational ages < 14 weeks (3.4.3).
You and Your Hormones. (2021). Progesterone.
Research prescriptions and over-the-counter medications from A to Z, compare drug prices, and start saving.