What is Tri-Lo-Marzia: Uses, Warnings & Interactions
Updated Jul 21,
2025 • Published Dec 30,
2020
Tri-Lo-Marzia is a generic prescription triphasic birth control pill. Tablets are taken every day, but they come in three different dosage strengths. Each dosage strength is taken for one week during the cycle. Inert pills without hormones are taken in the last week. While Tri-Lo-Marzia is safe for most women to take, it can sometimes cause serious problems, particularly blood clots.
Please read and follow the Instructions for Use included with this medicine.
The prescriber will tell you when to take the first pill.
Start on the day your period starts or the first Sunday after your period starts.
When switching from another type of hormonal birth control, take the first pill the day you would:
Begin a new blister pack of the old prescription
Replace a skin patch or vaginal ring
Have an implant or IUD removed.
Take one pill daily at the same time each day. Do not miss doses.
Take the tablets in order.
The top row with seven white pills is the first week of doses
The seven light blue pills in the second row are taken in the second week
The seven blue pills in the third row are taken in the third week
The last row of seven inert green pills is the fourth week of pills
When the last green pill is taken, start a new blister pack the next day.
You should always start a new pack on the same day of the week each cycle.
Tablets can be taken with or without food.
Swallow the tablet whole with a drink of water.
If you vomit or have diarrhea three to four hours after taking a tablet, take a similarly colored pill from your extra blister pack.
If you don’t have an extra blister pack, take the next pill in the current blister pack and finish the blister pack.
If you vomit or have diarrhea for longer than one day, continue through the current blister pack and try to contact the doctor. Use backup birth control.
Store the tablets away from light at room temperature.
What to do if you miss a dose of Tri-Lo-Marzia
Missed doses increase the risk of pregnancy.
If a colored pill is missed:
Take it as soon as you remember.
Take the next dose at its regular time.
You can take two doses in a single day to make up for a missed dose.
Pregnancy is not a risk, so backup birth control is unnecessary.
If you miss two colored pills in a row in the first two weeks:
Take two pills on the day you remember and two pills the next day.
Missing two pills in a row increases the risk of pregnancy. Use backup birth control for at least seven days.
If you miss two blue pills in a row in the third week:
Day 1 starters should immediately start a new blister pack.
Sunday starters should continue to take pills from the current blister pack and begin a new pack on Sunday.
Pregnancy is possible after starting a new kit. Use backup birth control for the first seven days.
If you miss three or more colored pills in a row in any week:
Day 1 starters should immediately start a new blister pack.
Sunday starters should continue to take pills from the current blister pack and begin a new pack on Sunday.
Pregnancy is possible after starting a new kit. Use backup birth control for the first seven days.
If you’re not sure about a missed dose, use backup birth control.
Tri-Lo-Marzia contraindications
This medicine is not right for everyone.
Do not use Tri-Lo-Marzia if you are:
Pregnant
Older than 35 and smoke
Older than 35 have focal headaches or migraines with aura
Do not use Tri-Lo-Marzia if you have blood clot problems, a history of blood clot problems, or risk factors for blood clots including:
Coronary artery disease
Problems with blood vessels in the brain
Uncontrolled high blood pressure
Diabetes with kidney, nerve, eye, or blood vessel damage
Heart valve problems or irregular heartbeats
Tri-Lo-Marzia is also contraindicated in women with:
Unexplained vaginal bleeding
Liver disease or liver tumors
Current or past breast cancer (or any other kind of cancer) that is hormone-sensitive
Tri-Lo-Marzia warnings
Tell all other healthcare professionals who treat you that you are taking oral contraceptives.
Oral contraceptives can alter the results of important blood tests.
Doses may need to stop at least four weeks before surgery and should not restart until two weeks after surgery.
Because of the risk of side effects, keep all appointments with the prescriber.
Tell the prescriber immediately if you become pregnant, think you’re pregnant, or miss two periods in a row.
Before starting birth control pills, make sure the prescriber knows if you are pregnant or breastfeeding, or have recently given birth.
Tell the prescriber if you smoke or if you have:
Heart or blood vessel problems
High blood pressure
Diabetes
High cholesterol
Migraines
Depression
A history of face, neck, and throat swelling (angioedema)
Also tell the prescriber if you’ve had problems during pregnancy or when taking birth control pills, particularly:
Skin yellowing (jaundice)
Brown patches on your face (chloasma)
Oral contraceptives like Tri-Lo-Marzia can cause serious problems including:
Increased risk of blood clots, heart attack, and stroke
Increased risk of breast or cervical cancer
Liver problems
Gallbladder problems
Elevated blood pressure
Elevated cholesterol and fats
Severe or long-lasting headaches
Angioedema (swelling of the face, mouth, and throat)
There may be no bleeding or only a little bleeding during menstruation. If there are other symptoms typical of pregnancy, such as morning sickness, or you have two or more menstrual periods with little or no bleeding, immediately talk to the prescriber.
A pregnancy test is required if two periods in a row are missed.
Tri-Lo-Marzia can cause dark patches on the face. Avoid too much sun exposure, use sunscreen, and stay away from tanning lights.
Oral contraceptives provide no protection from HIV/AIDS or other sexually transmitted diseases.
Nursing women may experience reduced milk production when taking Tri-Lo-Marzia.
Tri-Lo-Marzia interactions
Do not take Tri-Lo-Marzia with any hepatitis C drug containing ombitasvir/paritaprevir/ritonavir.
Tri-Lo-Marzia has several drug interactions that may either increase the risk of pregnancy or the risk of side effects. Make sure the prescriber knows if you’re taking: