Ovral g

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Ovral G tablet levonorgestrel ethinyl estradiol uses dosage

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Here is a complete overview of Ovral-G:

Ovral-G (Norgestrel + Ethinyl Estradiol)

Composition

Component	Amount
Norgestrel (contains Levonorgestrel 0.125 mg)	0.25 mg per tablet
Ethinyl Estradiol (EE)	0.05 mg (50 mcg) per tablet

Ovral-G belongs to the high-dose (50 mcg EE) generation of combined oral contraceptives (COCs). It is manufactured by Pfizer. For comparison, most modern low-dose pills contain only 20-35 mcg of EE (e.g., MALA-D/MALA-N contain 0.15 mg levonorgestrel + 0.03 mg EE).

Park's Textbook of Preventive and Social Medicine, Table 20 (lists Ovral-G under 50 mcg EE pills)

Uses

Contraception - The primary indication; primary spacing method of family planning
Emergency Contraception (Yuzpe regimen) - 2 tablets immediately + 2 tablets after 12 hours (must be taken within 72 hours of unprotected intercourse)
Postponement of Menses - 1 tablet daily starting from the 20th day of the cycle (8 days before expected menstruation); dose may be increased to 2-3 tablets/day if breakthrough bleeding occurs

Mechanism of Action

The combined pill works through three mechanisms (Park's Preventive Medicine):

Primary: Inhibits pituitary gonadotropin (LH/FSH) secretion - prevents ovulation
Secondary: Progestogen thickens cervical mucus, making it hostile to sperm penetration
Tertiary: Progestogen inhibits tubal motility, delaying sperm and ovum transport

Dosage and Administration

Regular contraceptive use: 1 tablet daily for 21 consecutive days, starting on Day 5 of the menstrual cycle; followed by a 7-day pill-free break (withdrawal bleeding occurs during this break)
Take at a fixed time each day (preferably at night before bed)
If a pill is missed: take it as soon as remembered, then continue the next pill at the usual time

Effectiveness

Taken correctly, COCs are nearly 100% effective. Typical-use pregnancy rate in developed countries is less than 1% per year. Effectiveness may be reduced by enzyme-inducing drugs such as:

Rifampicin
Phenobarbital
Ampicillin
Antiepileptic drugs (phenytoin, carbamazepine)

Advantages / Benefits

Highly reliable contraception
Reduces menstrual blood loss (withdrawal bleeding is about half of normal menstrual flow)
Relieves dysmenorrhea
Protective against endometrial and ovarian cancers with long-term use
Regularizes the menstrual cycle

Side Effects

Largely related to the estrogen component (especially relevant for Ovral-G's higher 50 mcg dose):

Cardiovascular:

Venous thromboembolism (DVT, PE) - risk increased
Arterial thromboembolism (myocardial infarction, stroke)
Hypertension

Metabolic:

Adverse lipid effects
Impaired glucose tolerance

Other:

Nausea, breast tenderness, headache
Chloasma (skin pigmentation)
Breakthrough bleeding / spotting
Mood changes / depression
Decreased libido

Contraindications

Absolute Contraindications:

Cancer of breast or genitals
Active liver disease / hepatic impairment
Previous or current history of thromboembolism (DVT, PE, stroke, MI)
Cardiac abnormalities
Congenital hyperlipidemia
Undiagnosed abnormal uterine bleeding
Pregnancy

Relative / Caution (requires medical surveillance):

Age > 40 years (contraindicated due to sharp rise in cardiovascular risk)
Smoker aged > 35 years
Mild hypertension
Chronic renal disease
Epilepsy
Migraine
Nursing mothers (first 6 months)
Diabetes mellitus
Gallbladder disease
History of amenorrhea / infrequent bleeding

Key Drug Interactions

Rifampicin - significantly reduces contraceptive efficacy (enzyme induction)
Antiepileptics (phenytoin, carbamazepine, phenobarbital) - reduce efficacy
Antibiotics (ampicillin) - may reduce efficacy
HCV combination therapy (ombitasvir/paritaprevir/ritonavir) - causes marked liver enzyme elevation; contraindicated

Special Notes

Due to the higher estrogen dose (50 mcg), Ovral-G carries a greater thrombotic risk compared to modern low-dose (20-35 mcg) pills. In most settings, low-dose pills (like MALA-D) are now preferred for routine contraception.
Women taking Ovral-G should have annual medical examinations.
Not recommended beyond age 40 years due to cardiovascular risk.
The Pfizer prescribing information confirms all above dosing and safety data.

Should I take it 20 days or can I stop after stopping of menstruation

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This is an important question - please read this carefully.

Do NOT stop Ovral-G just because the bleeding has stopped

This is a very common mistake that can cause the heavy bleeding to come back, sometimes worse than before.

Here is why

When Ovral-G is used to stop heavy/prolonged bleeding, it works by stabilizing the uterine lining (endometrium). If you stop the tablets abruptly as soon as the bleeding stops, the sudden hormone withdrawal causes the unstable endometrium to shed again, triggering another heavy bleed - sometimes within days.

As stated clearly in Berek & Novak's Gynecology:

"Stopping the prescribed regimen may result in a recurrence of heavy bleeding."

The correct approach depends on the regimen your doctor prescribed

Regimen	What to do
High-dose taper (e.g., 1 tablet every 6 hours for 5-7 days, then taper down)	Complete the full taper - do NOT stop when bleeding stops
21-day course (1 tablet daily for 21 days)	Complete all 21 days - do NOT stop early
Ongoing cycle control (3-6 months of once-daily pills)	Continue for the full recommended duration

What to expect when you DO finish the course

Once you complete the full prescribed course and stop, you will experience a withdrawal bleed - this is expected and normal. Goldman-Cecil Medicine warns:

"Patients should be warned to expect heavy bleeding 2 to 4 days after therapy is stopped."

This withdrawal bleed is not a sign something is wrong. It is the body shedding the endometrium in a controlled way.

Bottom line

Complete the full course your doctor prescribed - do not stop early just because the bleeding has stopped. If you are unsure exactly how many days you were told to take it, call your doctor or pharmacist now and confirm. Do not guess with hormonal therapy.

If you experience nausea, breast tenderness, or breakthrough bleeding during the course - these are normal side effects. Do NOT stop the tablets for these reasons either; call your doctor instead.

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