What is “Errin 0 35 mg”?
“Errin 0.35 mg” most commonly refers to Errin, a brand name for progestogen-only birth control pills containing 0.35 mg of the hormone norethindrone (also written as norethisterone). These pills are usually taken every day without a hormone-free break.
Because “0 35 mg” could also be a formatting issue (for example, “0.35 mg”), it’s best to confirm against the exact wording on your package or prescription.
What is it used for?
This type of pill is typically prescribed for:
- Contraception (pregnancy prevention)
- Sometimes for certain hormone-related cycle symptoms, depending on local prescribing practices
How is it usually taken?
Progestogen-only pills like this are generally taken:
- One pill daily, at about the same time each day
- There is usually no week off
Timing matters more than with combined pills, so if you tell me what you’re using it for and how many hours late you were (if any), I can explain the typical catch-up guidance.
What are common side effects?
Commonly reported side effects for progestogen-only pills include:
- Irregular bleeding or spotting
- Headache
- Breast tenderness
- Nausea
- Mood changes
Some people also experience changes in bleeding patterns over the first few months.
What should you do if you miss a dose?
Missed-dose rules depend on the exact product instructions and how late the missed pill was. If you share:
- how many hours late you are, and
- whether it’s your first missed pill or repeated,
I can help you interpret the usual guidance.
Is it safe for everyone?
These pills are often preferred for people who cannot take estrogen, but you should check with a clinician if you have concerns such as:
- Active or past blood clots
- Certain hormone-sensitive cancers
- Unexplained vaginal bleeding
- Severe liver disease
If you share your age, whether you’re postpartum/breastfeeding, and any medical history, I can help you think through the key safety questions to ask your pharmacist.
What does the “0.35 mg” mean?
The “0.35 mg” is the amount of progestogen in each tablet. It’s the strength that determines the brand’s dosing schedule and the medication’s classification as a progestogen-only pill.
Can you share what you need to know?
To give the most accurate answer, tell me which of these matches your goal:
1) You want to know what it is and how it works
2) How to take it and what happens if you miss a pill
3) Side effects and interactions
4) Whether it’s safe for your situation (pregnancy risk, breastfeeding, other meds)
If you can, also type exactly what’s on your box (or the full label text), since “Errin 0 35 mg” can sometimes be written in a way that loses important characters.