Minocycline 80mg ER Tablets

Manufacturer ASCEND LABORATORIES Active Ingredient Minocycline Extended-Release Tablets(mi noe SYE kleen) Pronunciation mi noe SYE kleen
It is used to treat pimples (acne).It may be given to you for other reasons. Talk with the doctor.
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Drug Class
Antibiotic
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Pharmacologic Class
Tetracycline antibiotic
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Pregnancy Category
Category D
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FDA Approved
May 2006
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

Minocycline extended-release is an antibiotic used to treat certain bacterial infections, most commonly moderate to severe acne. It works by stopping the growth of bacteria.
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How to Use This Medicine

Taking Your Medication Correctly

To get the most benefit from your medication, follow your doctor's instructions carefully. Read all the information provided with your prescription and follow the instructions closely.

Take your medication as directed by your doctor, swallowing the tablets or capsules whole without chewing or crushing them.
Drink a full glass of water with each dose.
If you're unsure whether your medication can be broken in half, consult with your doctor before doing so.
Continue taking your medication as prescribed, even if your symptoms improve.
Establish a routine by taking your medication at the same time every day.
You can take your medication with or without food, but if it causes stomach upset, take it with food.
However, do not take your medication at the same time as products containing iron or antacids with aluminum, calcium, or magnesium. Consult with your doctor or pharmacist for guidance.
Unless your doctor advises you to limit fluid intake, drink plenty of non-caffeinated liquids to stay hydrated.

Storing and Disposing of Your Medication

Store your medication at room temperature in a dry place, avoiding the bathroom.
Protect your medication from heat and light to preserve its effectiveness.
When you no longer need your medication, dispose of it properly.

Missing a Dose

If you miss a dose, take it as soon as you remember.
However, if it's close to the time for your next scheduled dose, skip the missed dose and resume your regular dosing schedule.
Do not take two doses at the same time or take extra doses to make up for a missed dose.
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Lifestyle & Tips

  • Take the tablet with a full glass of water to prevent esophageal irritation.
  • Do not lie down for at least 30-60 minutes after taking the medication.
  • Avoid excessive sun exposure and use sunscreen (SPF 30 or higher) and protective clothing, as minocycline can cause photosensitivity (increased sensitivity to sunlight).
  • Avoid taking antacids, iron supplements, or calcium-containing products (including dairy) within 2-3 hours of taking minocycline, as they can interfere with absorption.
  • If you are taking oral contraceptives, consider using an additional non-hormonal birth control method, as minocycline may reduce their effectiveness.
  • Do not skip doses or stop taking the medication early, even if you feel better, to prevent antibiotic resistance.

Dosing & Administration

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Adult Dosing

Standard Dose: 80 mg once daily
Dose Range: 45 - 135 mg

Condition-Specific Dosing:

moderate-to-severe acne vulgaris: Typically 1 mg/kg once daily for 12 weeks. Common strengths are 45 mg, 65 mg, 80 mg, 105 mg, 115 mg, 135 mg.
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Pediatric Dosing

Neonatal: Not established (contraindicated due to tooth discoloration and bone growth inhibition)
Infant: Not established (contraindicated due to tooth discoloration and bone growth inhibition)
Child: Not recommended for children under 8 years of age due to risk of permanent tooth discoloration and bone growth inhibition. For children 8 years and older, dosing is typically 1 mg/kg once daily for acne, similar to adults, but use with caution.
Adolescent: 1 mg/kg once daily (e.g., 80 mg once daily for an 80 kg adolescent) for moderate-to-severe acne vulgaris.
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Dose Adjustments

Renal Impairment:

Mild: No adjustment needed
Moderate: No adjustment needed
Severe: No adjustment needed, but monitor for adverse effects as minocycline is primarily eliminated via non-renal routes. Use with caution.
Dialysis: Not significantly removed by hemodialysis. No specific supplemental dose needed, but monitor for adverse effects.

Hepatic Impairment:

Mild: No specific adjustment needed, but use with caution.
Moderate: Use with caution; monitor for signs of hepatotoxicity. Dose reduction may be considered.
Severe: Use with caution; monitor for signs of hepatotoxicity. Dose reduction may be considered or avoid use if possible.

Pharmacology

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Mechanism of Action

Minocycline is a tetracycline antibiotic that inhibits bacterial protein synthesis by reversibly binding to the 30S ribosomal subunit, thereby preventing the attachment of aminoacyl-tRNA to the ribosomal acceptor site. This action prevents the addition of new amino acids to the growing peptide chain, leading to bacteriostatic effects.
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Pharmacokinetics

Absorption:

Bioavailability: 90-100%
Tmax: 3-4 hours (for extended-release formulation)
FoodEffect: Food may slightly decrease the extent of absorption but is not considered clinically significant for the extended-release formulation; can be taken with or without food.

Distribution:

Vd: Approximately 1.5 L/kg
ProteinBinding: Approximately 70-75%
CnssPenetration: Yes (good penetration into CSF, tears, and saliva)

Elimination:

HalfLife: Approximately 11-22 hours
Clearance: Not available (variable, primarily non-renal)
ExcretionRoute: Primarily fecal (via biliary excretion), with a smaller portion excreted renally.
Unchanged: Approximately 10-30% renally, significant portion fecally
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Pharmacodynamics

OnsetOfAction: Not immediately applicable for chronic conditions like acne; antibacterial effects begin rapidly after absorption.
PeakEffect: Clinical efficacy for acne typically observed after several weeks to months of consistent use.
DurationOfAction: Due to its long half-life, once-daily dosing is effective.

Safety & Warnings

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Side Effects

Urgent Side Effects: Seek Medical Help Right Away

Although rare, some people may experience severe and potentially life-threatening side effects while taking this medication. If you notice any of the following symptoms, contact your doctor immediately or seek emergency medical attention:

Signs of an allergic reaction, such as:
+ Rash or hives
+ Itching or red, swollen, blistered, or peeling skin with or without fever
+ Wheezing or tightness in the chest or throat
+ Difficulty breathing, swallowing, or talking
+ Unusual hoarseness or swelling of the mouth, face, lips, tongue, or throat
Signs of pancreatitis (pancreas problems), such as:
+ Severe stomach pain
+ Severe back pain
+ Severe upset stomach or vomiting
Signs of kidney problems, such as:
+ Inability to urinate
+ Changes in urine output
+ Blood in the urine
+ Sudden weight gain
Signs of lupus, such as:
+ Rash on the cheeks or other body parts
+ Easy sunburning
+ Muscle or joint pain
+ Chest pain or shortness of breath
+ Swelling in the arms or legs
Fever, chills, or sore throat
Unexplained bruising or bleeding
Feeling extremely tired or weak
Changes in hearing
Joint pain or swelling
Muscle pain or weakness
Ringing in the ears
Seizures
Shortness of breath
Chest pain
Abnormal heartbeat
Swelling
Changes in nail, skin, eye, scar, tooth, or gum color to a darker shade
Mouth irritation or sores
Burning, numbness, or tingling sensations
Redness or white patches in the mouth or throat
Rectal or genital irritation
Vaginal itching or discharge

Antibiotic-Related Side Effects

Diarrhea is a common side effect of antibiotics. However, in rare cases, a severe form of diarrhea called C. diff-associated diarrhea (CDAD) may occur, which can lead to life-threatening bowel problems. If you experience stomach pain, cramps, or loose, watery, or bloody stools, contact your doctor immediately.

Other Serious Side Effects

Liver problems: Contact your doctor right away if you notice dark urine, tiredness, decreased appetite, upset stomach or stomach pain, light-colored stools, vomiting, or yellow skin or eyes.
Raised pressure in the brain: This condition may cause headaches or eyesight problems, such as blurred vision, double vision, or loss of vision. If you experience any of these symptoms, contact your doctor immediately.
Thyroid cancer: Long-term use of this medication has been associated with an increased risk of thyroid cancer. If you notice lasting hoarseness, a neck mass, or difficulty breathing or swallowing, contact your doctor right away.
Severe skin reactions: These reactions, including Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN), can be life-threatening. Seek medical help immediately if you experience red, swollen, blistered, or peeling skin; red or irritated eyes; sores in your mouth, throat, nose, eyes, genitals, or skin; fever; chills; body aches; shortness of breath; or swollen glands.

Common Side Effects

Many people taking this medication may experience mild or no side effects. However, if you notice any of the following symptoms, contact your doctor or seek medical attention if they bother you or do not go away:

Diarrhea
Upset stomach or vomiting
Decreased appetite
Dizziness, drowsiness, tiredness, or weakness

Reporting Side Effects

If you have questions about side effects or experience any symptoms that concern you, contact your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
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Seek Immediate Medical Attention If You Experience:

  • Severe headache, blurred vision, double vision, or vision loss (signs of pseudotumor cerebri/benign intracranial hypertension).
  • Severe skin rash, fever, swollen lymph nodes, or swelling of the face (signs of Drug Reaction with Eosinophilia and Systemic Symptoms - DRESS syndrome).
  • Yellowing of the skin or eyes, dark urine, severe stomach pain, or persistent nausea/vomiting (signs of liver problems).
  • Severe dizziness or vertigo.
  • New or worsening joint pain or swelling (signs of drug-induced lupus-like syndrome).
  • Unusual bleeding or bruising.
  • Severe diarrhea that is watery or bloody (may be a sign of C. difficile infection).
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Before Using This Medicine

Before Taking This Medication: Important Information to Share with Your Doctor

It is essential to inform your doctor about the following:

Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Be sure to describe the allergic reaction you experienced.
If you are currently taking any of the following medications: Acitretin, isotretinoin, or a penicillin.
If you are pregnant or think you might be pregnant. Do not take this medication if you are pregnant.
If you are trying to conceive or father a child.
* If you are breastfeeding or plan to breastfeed. You may need to avoid breastfeeding while taking this medication.

This list is not exhaustive, and it is crucial to discuss all your medications (including prescription, over-the-counter, natural products, and vitamins) and health issues with your doctor and pharmacist. They will help determine if it is safe to take this medication with your other medications and health conditions. Never start, stop, or change the dosage of any medication without first consulting your doctor.
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Precautions & Cautions

It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication. Before engaging in activities that require alertness, such as driving, wait until you understand how this drug affects you.

Regular blood tests will be necessary, as directed by your doctor. Be sure to discuss any concerns or questions with your doctor. Additionally, this medication may interfere with certain laboratory tests, so it is crucial to notify all healthcare providers and laboratory personnel that you are taking this drug.

Do not exceed the prescribed duration of treatment, as this may increase the risk of a secondary infection. When taking this medication, be cautious when exposed to sunlight, as it may increase your susceptibility to sunburn. If you experience unusual sunburn or sensitivity, inform your doctor promptly.

In children under 8 years old, this medication may cause permanent tooth discoloration, resulting in a yellow-gray-brown color. If this occurs, the discoloration will not resolve. Discuss this risk with your doctor. This medication is not approved for use in children under 12 years old, so it is essential to consult with your doctor. Furthermore, do not administer this medication to children under 8 years of age.

Although less common, tooth discoloration has also been reported in adults, which typically resolves after discontinuing the medication and undergoing dental cleaning. Consult your doctor if you have concerns about tooth discoloration.

When taking this medication, birth control pills and other hormone-based contraceptives may be less effective. To prevent pregnancy, use an additional form of birth control, such as condoms, in conjunction with your regular birth control method.

If you are pregnant or become pregnant while taking this medication, it is crucial to contact your doctor immediately, as this drug may pose a risk to the unborn baby.
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Overdose Information

Overdose Symptoms:

  • Nausea
  • Vomiting
  • Diarrhea
  • Dizziness
  • Lightheadedness

What to Do:

In case of overdose, seek immediate medical attention or call a Poison Control Center (1-800-222-1222). Treatment is generally supportive, including gastric lavage if appropriate, and symptomatic management.

Drug Interactions

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Contraindicated Interactions

  • Isotretinoin (and other oral retinoids) due to increased risk of pseudotumor cerebri (benign intracranial hypertension).
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Major Interactions

  • Anticoagulants (e.g., Warfarin): Tetracyclines can depress plasma prothrombin activity, requiring dosage adjustment of anticoagulants.
  • Penicillins: Bacteriostatic drugs like minocycline may interfere with the bactericidal action of penicillins; avoid concomitant use.
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Moderate Interactions

  • Antacids containing aluminum, calcium, or magnesium, and iron preparations, bismuth subsalicylate, zinc salts: Can form insoluble chelates with minocycline, significantly reducing its absorption. Administer minocycline 2-3 hours before or after these agents.
  • Oral Contraceptives: May reduce the effectiveness of oral contraceptives, leading to breakthrough bleeding or unintended pregnancy (though evidence is controversial, caution is advised).
  • Ergot alkaloids: Theoretical increased risk of ergotism.
  • Methoxyflurane: Concurrent use with tetracyclines has been reported to result in fatal renal toxicity.

Monitoring

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Baseline Monitoring

Liver function tests (ALT, AST, bilirubin)

Rationale: To establish baseline and identify pre-existing hepatic impairment, especially for long-term therapy.

Timing: Prior to initiating therapy, particularly if prolonged use is anticipated or patient has hepatic impairment.

Renal function tests (BUN, creatinine)

Rationale: To establish baseline and identify pre-existing renal impairment, though minocycline is primarily non-renally eliminated.

Timing: Prior to initiating therapy, particularly if prolonged use is anticipated or patient has renal impairment.

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Routine Monitoring

Liver function tests (ALT, AST, bilirubin)

Frequency: Periodically (e.g., every 3-6 months) for patients on long-term therapy (e.g., for acne).

Target: Within normal limits

Action Threshold: Significant elevation (e.g., >3x ULN) may warrant dose reduction or discontinuation.

Renal function tests (BUN, creatinine)

Frequency: Periodically for patients on long-term therapy, especially if underlying renal issues.

Target: Within normal limits

Action Threshold: Significant changes may warrant re-evaluation of therapy.

Intracranial pressure (symptoms)

Frequency: Ongoing symptom monitoring

Target: Not applicable

Action Threshold: New or worsening severe headache, blurred vision, diplopia, papilledema, nausea, vomiting; requires immediate medical evaluation and discontinuation.

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Symptom Monitoring

  • Photosensitivity (severe sunburn-like reaction)
  • Dizziness, lightheadedness, vertigo (especially at initiation or with dose changes)
  • Gastrointestinal upset (nausea, vomiting, diarrhea)
  • Skin discoloration (blue-gray pigmentation, particularly with long-term use)
  • Severe headache, blurred vision, diplopia (signs of pseudotumor cerebri)
  • Rash, fever, lymphadenopathy, eosinophilia (signs of DRESS syndrome)
  • Joint pain, swelling (drug-induced lupus-like syndrome)
  • Yellowing of skin or eyes, dark urine (signs of liver problems)

Special Patient Groups

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Pregnancy

Minocycline is classified as Pregnancy Category D. It should not be used during pregnancy due to potential harm to the fetus.

Trimester-Specific Risks:

First Trimester: Potential for skeletal malformations, though less studied than dental effects.
Second Trimester: Risk of permanent tooth discoloration (yellow-gray-brown) and inhibition of bone growth in the developing fetus.
Third Trimester: Risk of permanent tooth discoloration (yellow-gray-brown) and inhibition of bone growth in the developing fetus.
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Lactation

Minocycline is excreted into breast milk. Use is generally not recommended during breastfeeding due to the potential for permanent tooth discoloration and inhibition of bone growth in the nursing infant. The American Academy of Pediatrics considers tetracyclines to be compatible with breastfeeding with caution.

Infant Risk: L3 (Moderately Safe) - Potential for tooth staining and inhibition of bone growth in the infant, though absorption by the infant is generally low. Monitor infant for diarrhea, candidiasis, and tooth discoloration.
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Pediatric Use

Contraindicated in children under 8 years of age due to the risk of permanent tooth discoloration (yellow-gray-brown) and inhibition of bone growth. Use in children 8 years and older should be carefully weighed against these risks.

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Geriatric Use

No specific dose adjustments are generally required based solely on age. However, elderly patients may have reduced renal or hepatic function, which should be considered. Monitor for adverse effects, particularly dizziness and GI upset.

Clinical Information

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Clinical Pearls

  • Minocycline is known for causing vestibular side effects (dizziness, vertigo, ataxia), which are more common with higher doses and in females. These usually resolve with continued therapy or dose reduction.
  • Long-term use of minocycline can lead to blue-gray skin, nail, and scleral discoloration, which may be permanent.
  • Minocycline has anti-inflammatory properties in addition to its antibacterial effects, which contributes to its efficacy in acne treatment.
  • Patients should be advised to report any new or worsening severe headache or vision changes immediately, as these can be signs of pseudotumor cerebri.
  • Extended-release formulations are designed to reduce the incidence of GI upset and vestibular side effects compared to immediate-release formulations, by providing more consistent drug levels.
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Alternative Therapies

  • Other oral tetracyclines (e.g., Doxycycline, Sarecycline) for acne or other infections.
  • Macrolide antibiotics (e.g., Azithromycin, Erythromycin) for certain bacterial infections.
  • Topical antibiotics (e.g., Clindamycin, Erythromycin) for acne.
  • Topical retinoids (e.g., Tretinoin, Adapalene, Tazarotene) for acne.
  • Oral retinoids (e.g., Isotretinoin) for severe acne (contraindicated with minocycline).
  • Benzoyl peroxide for acne.
  • Oral contraceptives for hormonal acne.
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Cost & Coverage

Average Cost: Varies widely, typically $50-$300+ per 30 tablets
Generic Available: Yes
Insurance Coverage: Tier 2 or Tier 3 (for generic), Tier 3 or higher (for brand)
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General Drug Facts

If your symptoms or health issues persist or worsen, it is essential to contact your doctor promptly. To ensure your safety, never share your medication with others or take someone else's medication. Some medications may come with an additional patient information leaflet, so it's a good idea to check with your pharmacist. If you have any questions or concerns about this medication, don't hesitate to discuss them with your doctor, nurse, pharmacist, or other healthcare provider. In the event of a suspected overdose, immediately call your local poison control center or seek emergency medical attention. When seeking help, be prepared to provide information about the medication taken, the amount, and the time it occurred.