Minocycline 105mg 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 is an antibiotic that belongs to a group of medicines called tetracyclines. The extended-release tablet is used to treat moderate to severe acne by reducing the bacteria that cause acne and by decreasing inflammation. It works by stopping the growth of certain 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 whole without chewing or crushing them.
Drink a full glass of water with each dose.
If you have been instructed to break your tablets in half, make sure you are using a product that can be broken in half. If you are unsure, consult your doctor.
Continue taking your medication as prescribed, even if your symptoms improve.
Take your medication at the same time every day to establish a routine.
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 your doctor or pharmacist for guidance.
Drink plenty of non-caffeinated fluids, unless your doctor advises you to limit your fluid intake.

Storing and Disposing of Your Medication

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

What to Do If You Miss a Dose

If you miss a dose, take it as soon as you remember.
However, if it is close to the time for your next 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 whole with a full glass of water. Do not crush, chew, or break it.
  • You can take it with or without food, but always take it the same way each day.
  • Avoid lying down for at least 30 minutes after taking the dose to prevent irritation of the esophagus.
  • Avoid excessive sun exposure or artificial UV light (tanning beds) while taking this medication, as it can cause severe sunburn (photosensitivity). Use sunscreen and wear protective clothing.
  • Do not take antacids, iron supplements, calcium supplements, or laxatives containing magnesium within 2 hours before or after taking minocycline, as they can interfere with its absorption.
  • If you are taking oral contraceptives, use an additional non-hormonal method of birth control (e.g., condoms) while on minocycline and for at least 7 days after stopping, as minocycline may reduce the effectiveness of birth control pills.
  • Do not give this medication to children under 8 years of age due to the risk of permanent tooth discoloration and effects on bone growth.

Dosing & Administration

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Adult Dosing

Standard Dose: 105 mg orally once daily
Dose Range: 105 - 105 mg

Condition-Specific Dosing:

moderateToSevereAcneVulgaris: 105 mg orally once daily
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Pediatric Dosing

Neonatal: Not established (contraindicated due to tooth discoloration)
Infant: Not established (contraindicated due to tooth discoloration)
Child: Not established for children under 8 years (contraindicated due to tooth discoloration). For children 8 years and older, dosing for acne is typically weight-based, e.g., 1 mg/kg once daily, not to exceed 105 mg/day.
Adolescent: 105 mg orally once daily (for acne, if 8 years or older and appropriate weight)
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Dose Adjustments

Renal Impairment:

Mild: No specific adjustment recommended, but monitor for adverse effects.
Moderate: Use with caution; consider dose reduction or increased dosing interval if accumulation occurs. Monitor renal function.
Severe: Use with caution; consider dose reduction or increased dosing interval. Monitor renal function and minocycline levels if possible.
Dialysis: Minocycline is not significantly removed by hemodialysis. Use with caution and monitor for adverse effects.

Hepatic Impairment:

Mild: Use with caution.
Moderate: Use with caution; consider dose reduction. Monitor liver function tests.
Severe: Use with caution; consider dose reduction. Monitor liver function tests closely. Avoid 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 binding of aminoacyl tRNA to the mRNA-ribosome complex. This leads to bacteriostatic activity against susceptible organisms. Its anti-inflammatory properties are also thought to contribute to its efficacy in acne.
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Pharmacokinetics

Absorption:

Bioavailability: Approximately 90-100% (for immediate release, ER formulation designed for sustained release)
Tmax: Approximately 3.5 hours (for 105 mg ER tablet)
FoodEffect: Minimal effect on absorption for the extended-release formulation; can be taken with or without food.

Distribution:

Vd: Approximately 1.2 L/kg
ProteinBinding: Approximately 70-75%
CnssPenetration: Yes (achieves therapeutic concentrations in CSF)

Elimination:

HalfLife: Approximately 18-23 hours (for ER formulation)
Clearance: Not available (variable)
ExcretionRoute: Primarily renal (40-60%) and fecal/biliary excretion
Unchanged: Approximately 10-30% (renal)
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Pharmacodynamics

OnsetOfAction: Not immediate for clinical effect in acne; typically weeks to months for noticeable improvement.
PeakEffect: Not applicable for a sustained-release antibiotic for chronic conditions like acne.
DurationOfAction: 24 hours (due to extended-release formulation and long half-life, allowing once-daily dosing)

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: rash, hives, itching, red, swollen, blistered, or peeling skin (with or without fever), wheezing, tightness in the chest or throat, difficulty breathing, swallowing, or talking, unusual hoarseness, or swelling of the mouth, face, lips, tongue, or throat.
Pancreatitis symptoms: severe stomach pain, severe back pain, or severe nausea and vomiting.
Kidney problems: inability to urinate, changes in urine output, blood in the urine, or sudden weight gain.
Lupus symptoms: rash on the cheeks or other body parts, easy sunburn, muscle or joint pain, chest pain or shortness of breath, or swelling in the arms or legs.
Fever, chills, or sore throat.
Unexplained bruising or bleeding, or 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.
Darkening of the color of nails, skin, eyes, scars, teeth, or gums.
Mouth irritation or mouth sores.
Burning, numbness, or tingling sensations.
Redness or white patches in the mouth or throat.
Rectal or genital irritation.
Vaginal itching or discharge.

Antibiotic-Associated Diarrhea

Diarrhea is a common side effect of antibiotics. However, in rare cases, a severe form of diarrhea called Clostridioides difficile-associated diarrhea (CDAD) may occur. This condition can lead to life-threatening bowel problems. If you experience stomach pain, cramps, or loose, watery, or bloody stools, contact your doctor immediately. Do not treat diarrhea without consulting your doctor first.

Liver Problems

Liver damage has been reported with this medication, and in some cases, it has been fatal. If you notice any signs of liver problems, such as dark urine, fatigue, decreased appetite, nausea, stomach pain, light-colored stools, vomiting, or yellow skin and eyes, contact your doctor right away.

Raised Brain Pressure

This medication can cause increased pressure in the brain, which usually resolves after stopping the medication. However, in some cases, vision loss may occur and may be permanent. If you experience headaches or vision problems, such as blurred vision, double vision, or loss of vision, contact your doctor immediately.

Thyroid Cancer

There have been reports of thyroid cancer associated with long-term use of this medication. If you notice persistent hoarseness, a neck mass, or difficulty breathing or swallowing, contact your doctor right away.

Severe Skin Reactions

This medication can cause severe skin reactions, including Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and other serious conditions. These reactions can be life-threatening and may affect other organs. If you experience any of the following symptoms, seek medical help immediately: red, swollen, blistered, or peeling skin; red or irritated eyes; sores in the mouth, throat, nose, eyes, genitals, or skin; fever; chills; body aches; shortness of breath; or swollen glands.

Other Side Effects

Most people do not experience severe side effects, and many have only minor or no side effects at all. However, if you notice any of the following side effects, contact your doctor or seek medical attention if they bother you or do not go away:

Diarrhea, nausea, or vomiting.
Decreased appetite.
Dizziness, drowsiness, fatigue, or weakness.

Reporting Side Effects

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

  • Severe headache, especially if accompanied by blurred vision, double vision, or vision loss (signs of pseudotumor cerebri)
  • Yellowing of the skin or eyes (jaundice), dark urine, or severe stomach pain (signs of liver problems)
  • Unusual tiredness or weakness, easy bruising or bleeding (signs of blood problems)
  • Severe skin rash, blistering, peeling skin, or swelling of the face/throat (signs of severe allergic reaction)
  • Joint pain, muscle aches, or fever (signs of drug-induced lupus-like syndrome)
  • Dizziness or lightheadedness, especially when standing up
  • Blue-gray discoloration of the skin, nails, or gums
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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 or have taken any of the following medications: Acitretin, isotretinoin, or a penicillin.
If you are pregnant or think you may be pregnant. Note that this medication is not recommended during pregnancy.
If you are planning to become pregnant 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 and over-the-counter drugs, natural products, and vitamins, with your doctor and pharmacist. They will help you determine if it is safe to take this medication with your other medications and health conditions. Do not start, stop, or change the dose 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 second infection. When taking this medication, be cautious when exposed to sunlight, as it may cause increased sensitivity to sunburn. If you experience easy sunburning while on this medication, inform your doctor.

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 fade. Discuss this risk with your doctor. This medication is not approved for use in children under 12 years old, so consult with your doctor to determine the best course of treatment.

Children under 8 years old should not be given this medication. Although rare, tooth discoloration has also been reported in adults, which typically reverses after stopping 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 a condom. If you are pregnant or become pregnant while taking this medication, contact your doctor immediately, as it may harm 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 supportive and symptomatic. Gastric lavage may be indicated.

Drug Interactions

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Contraindicated Interactions

  • Isotretinoin (increased risk of pseudotumor cerebri)
  • Methoxyflurane (fatal renal toxicity)
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Major Interactions

  • Anticoagulants (e.g., warfarin - potentiates anticoagulant effect)
  • Penicillins (may interfere with bactericidal action of penicillin)
  • Oral contraceptives (may reduce efficacy of oral contraceptives, leading to breakthrough bleeding or pregnancy)
  • Antacids containing aluminum, calcium, or magnesium (decreased minocycline absorption)
  • Iron preparations (decreased minocycline absorption)
  • Bismuth subsalicylate (decreased minocycline absorption)
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Moderate Interactions

  • Ergot alkaloids (theoretical increased risk of ergotism)
  • Digoxin (may increase digoxin levels)
  • Typhoid vaccine, live (tetracyclines may inactivate the vaccine)
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Minor Interactions

  • Sucralfate (decreased minocycline absorption)

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 (BUN, creatinine)

Rationale: To establish baseline and identify pre-existing renal impairment, as minocycline is partially renally excreted.

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 for long-term therapy (e.g., >6 months)

Target: Within normal limits

Action Threshold: Significant elevation (e.g., >3x ULN) warrants discontinuation or dose adjustment.

Renal function (BUN, creatinine)

Frequency: Periodically for long-term therapy or in patients with renal impairment

Target: Within normal limits or stable for patient

Action Threshold: Significant decline in function warrants dose adjustment or discontinuation.

Intracranial pressure (symptoms of pseudotumor cerebri)

Frequency: Ongoing symptom monitoring

Target: N/A

Action Threshold: New or worsening headache, blurred vision, diplopia, papilledema require immediate evaluation and discontinuation.

Skin pigmentation changes

Frequency: Ongoing visual inspection

Target: N/A

Action Threshold: Development of blue-gray skin, nail, or mucosal discoloration warrants consideration of discontinuation.

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Symptom Monitoring

  • Headache (especially severe or persistent)
  • Blurred vision or other visual disturbances (e.g., diplopia, loss of vision)
  • Dizziness or lightheadedness
  • Nausea, vomiting, diarrhea
  • Photosensitivity (severe sunburn-like reaction)
  • Skin rash or hives
  • Yellowing of skin or eyes (jaundice)
  • Darkening of skin, nails, or gums (hyperpigmentation)
  • Joint pain or swelling (drug-induced lupus-like syndrome)

Special Patient Groups

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Pregnancy

Contraindicated during pregnancy. Minocycline can cause permanent discoloration of teeth (yellow-gray-brown) and reversible inhibition of bone growth in the fetus. It should only be used if the potential benefit justifies the potential risk to the fetus.

Trimester-Specific Risks:

First Trimester: Potential for skeletal and dental abnormalities.
Second Trimester: High risk of permanent tooth discoloration (enamel hypoplasia) and inhibition of bone growth.
Third Trimester: High risk of permanent tooth discoloration (enamel hypoplasia) and inhibition of bone growth.
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Lactation

Use with caution. Minocycline is excreted into breast milk. While the amount is generally low, there is a theoretical risk of tooth discoloration and inhibition of bone growth in the nursing infant. The American Academy of Pediatrics considers tetracyclines compatible with breastfeeding with caution.

Infant Risk: L3 (Moderately Safe) - Potential for tooth staining, inhibition of bone growth, and alteration of gut flora in the infant. 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 reversible inhibition of bone growth. Use in children 8 years and older for acne should be carefully considered and dosed appropriately.

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Geriatric Use

No specific dose adjustment is generally required based on age alone. However, elderly patients are more likely to have age-related decreases in renal or hepatic function, which may necessitate dose adjustments or closer monitoring for adverse effects.

Clinical Information

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Clinical Pearls

  • Minocycline ER is specifically formulated for once-daily dosing and is often preferred for acne due to its anti-inflammatory properties in addition to its antibacterial action.
  • Counsel patients extensively on photosensitivity and the importance of sun protection.
  • Warn patients about potential dizziness, especially at the start of therapy, and advise caution with driving or operating machinery.
  • Educate patients about the rare but serious risk of pseudotumor cerebri (benign intracranial hypertension) and to report any severe headaches or vision changes immediately.
  • Advise patients that skin, nail, and gum discoloration can occur with long-term use, which may be permanent.
  • Ensure patients understand the interaction with antacids, iron, and calcium, and the need to separate administration times.
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Alternative Therapies

  • Other oral tetracyclines (e.g., doxycycline, sarecycline)
  • Other oral antibiotics for acne (e.g., azithromycin, erythromycin, trimethoprim/sulfamethoxazole)
  • Topical retinoids (e.g., tretinoin, adapalene, tazarotene)
  • Topical antibiotics (e.g., clindamycin, erythromycin)
  • Benzoyl peroxide
  • Oral retinoids (e.g., isotretinoin for severe acne)
  • Hormonal therapies (e.g., oral contraceptives, spironolactone for hormonal acne)
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Cost & Coverage

Generic Available: Yes
Insurance Coverage: Tier 2 or Tier 3 (varies by insurance plan)
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General Drug Facts

If your symptoms or health issues persist or worsen, it's essential to contact your doctor for further guidance. 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 be sure to check with your pharmacist for more information. If you have any questions or concerns about this medication, don't hesitate to reach out to 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 details about the overdose, including the medication taken, the amount, and the time it occurred.