Doxycycline Mono 40mg DR Capsules
Overview
What is this medicine?
How to Use This Medicine
To ensure you get the most out of your medication, follow these guidelines:
Take your medication exactly as directed by your doctor. Read all the information provided with your prescription and follow the instructions carefully.
Continue taking your medication as prescribed by your doctor or healthcare provider, even if you start to feel better.
Some medications should be taken with food, while others should be taken on an empty stomach. Check with your pharmacist to determine the best way to take your medication.
It's best to avoid taking your medication at the same time as milk, dairy products, or other calcium-containing foods, as this may reduce its effectiveness. If you have questions, consult with your doctor or pharmacist.
Drink plenty of non-caffeinated liquids, unless your doctor advises you to limit your fluid intake.
Important Interactions to Avoid
Do not take the following medications or supplements within 2 hours of taking your prescribed medication:
Bismuth (Pepto-Bismol)
Calcium
Iron
Magnesium
Zinc
Multivitamins with minerals
Colestipol
Cholestyramine
Didanosine
Antacids
Administration Instructions
Take your medication with a full glass of water.
Avoid lying down after taking your medication to minimize the risk of throat irritation. Ask your pharmacist how long you should wait before lying down.
Storing and Disposing of Your Medication
Store your medication at room temperature, protected from light and moisture. Do not store it in a bathroom.
Do not take your medication if it is past its expiration date or has not been stored properly.
If you have any questions about storing or disposing of your medication, consult with your pharmacist.
Missing a Dose
If you miss a dose, take it as soon as you remember.
If it's close to the time for your next dose, skip the missed dose and resume your regular schedule.
* Do not take two doses at the same time or take extra doses to make up for a missed one.
Lifestyle & Tips
- Take the capsule whole with a full glass of water (at least 8 ounces) to prevent irritation of the esophagus.
- Take the medication in the morning, at least one hour before or two hours after a meal.
- Do not lie down for at least 30 minutes (preferably 1 hour) after taking the capsule.
- Avoid taking antacids, iron supplements, or multivitamins containing minerals (like calcium, magnesium, aluminum, zinc) within 2 hours before or after taking doxycycline, as they can interfere with absorption.
- Protect your skin from the sun (wear protective clothing, use sunscreen with SPF 30 or higher) as doxycycline can make your skin more sensitive to sunlight.
- Inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding.
- Do not give this medication to children under 8 years of age due to potential effects on tooth development and bone growth.
Available Forms & Alternatives
Available Strengths:
- Doxycycline Hyc 50mg Caps
- Doxycycline Hyc 100mg Caps
- Doxycycline Hyc 100mg Tabs
- Doxycycline Monohydrate 100mg Tabs
- Doxycycline Monohydrate 50mg Tabs
- Doxycycline Monohydrate 75mg Caps
- Doxycycline Hyc 20mg Tablets
- Doxycycline Monohydrate 75mg Tabs
- Doxycycline Monohydrate 150mg Tabs
- Doxycycline Monohyd 25mg/5ml Susp
- Doxycycline Hyclate 100mg DR Tb
- Doxycycline Monohydrate 50mg Caps
- Doxycycline Monohydrate 150mg Caps
- Doxycycline Monohydrate 100mg Caps
- Doxycycline Monohydrate 100mg Caps
- Doxycycline Hyclate 150mg DR Tb
- Doxycycline Hyclate 200mgdr Tabs
- Doxycycline Hyclate 50mg DR Tb
- Doxycycline Hyclate 50mg DR Tb
- Doxycycline Hyclate 200mg DR Tabs
- Doxycycline Hyc 50mg Tabs
- Doxycycline Hyc 150mg Tabs
- Doxycycline Hyc 75mg Tabs
- Doxycycline Monohydrate 150mg Caps
- Doxycycline Hyclate 75mg DR Tb
- Doxycycline Hyclate 100mg DR Tb
- Doxycycline Hyclate 80mg DR Tabs
- Doxycycline Mono 40mg Drcapsules
- Doxycycline Monohydrate 150mg Tabs
- Doxycycline Hyclate 100mg Inj, 1 Vl
- Doxycycline Mono 40mg DR Capsules
- Doxycycline Mono 40mg DR Capsules
Dosing & Administration
Adult Dosing
Condition-Specific Dosing:
Pediatric Dosing
Dose Adjustments
Renal Impairment:
Hepatic Impairment:
Pharmacology
Mechanism of Action
Pharmacokinetics
Absorption:
Distribution:
Elimination:
Pharmacodynamics
Safety & Warnings
Side Effects
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 or seek medical attention immediately:
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, trouble breathing, swallowing, or talking, unusual hoarseness, or swelling of the mouth, face, lips, tongue, or throat
Signs of liver problems: dark urine, tiredness, decreased appetite, upset stomach or stomach pain, light-colored stools, vomiting, or yellow skin or eyes
Signs of pancreatitis (pancreas problem): severe stomach pain, severe back pain, or severe upset stomach or vomiting
Chest pain or pressure, or a rapid heartbeat
Difficulty urinating or changes in urine output
Fever, chills, or sore throat; unexplained bruising or bleeding; or feeling extremely tired or weak
Throat irritation or trouble swallowing
Muscle or joint pain
Rapid breathing
Flushing
Severe dizziness or fainting
Changes in skin color
Vaginal itching or discharge
Diarrhea (common with antibiotics), especially if severe, watery, or bloody (may be a sign of C. diff-associated diarrhea, a potentially life-threatening condition)
If you experience any of these symptoms, call your doctor right away. Additionally, be aware that:
C. diff-associated diarrhea (CDAD) may occur during or after antibiotic treatment, which can lead to a life-threatening bowel condition. Seek medical help if you have stomach pain, cramps, or severe diarrhea.
Raised pressure in the brain has been reported with this medication, which may cause headaches or vision problems (such as blurred vision, double vision, or loss of vision). If you experience any of these symptoms, contact your doctor immediately.
Other Possible Side Effects
Most people do not experience severe side effects, but some may occur. If you notice any of the following symptoms, contact your doctor if they bother you or do not go away:
Diarrhea, upset stomach, or vomiting
Decreased appetite
This is not an exhaustive list of possible side effects. If you have questions or concerns about side effects, 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.
Seek Immediate Medical Attention If You Experience:
- Severe headache, blurred vision, or vision changes (could be signs of increased pressure in the brain)
- Severe skin rash or blistering
- Severe or persistent diarrhea (could be a sign of C. difficile infection)
- Signs of liver problems (e.g., yellowing of skin/eyes, dark urine, severe stomach pain)
- Difficulty swallowing or painful swallowing
- New or worsening vaginal yeast infection
Before Using This Medicine
It is essential to inform your doctor about the following:
Any allergies you have, including allergies to this medication, its components, or other substances. Be sure to describe the allergic reaction and its symptoms.
If you are currently taking any of the following medications: Acitretin, Isotretinoin, or a Penicillin.
* If you are breast-feeding or plan to breast-feed, as you may need to avoid doing so while taking this medication.
This list is not exhaustive, and it is crucial to discuss all your medications (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 dose of any medication without first consulting your doctor.
Precautions & Cautions
This medication may interfere with certain laboratory tests, so it is crucial to notify all your healthcare providers and lab personnel that you are taking this drug. Do not exceed the recommended duration of treatment, as this may increase the risk of a second infection.
You may be more susceptible to sunburn while taking this medication, so take necessary precautions when exposed to the sun. If you experience unusual sunburn or sensitivity, inform your doctor promptly.
Be aware that this drug can cause severe skin reactions, including Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and other serious conditions that can affect internal organs. These reactions can be life-threatening, so seek immediate medical attention if you experience symptoms such as 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.
If you are using birth control pills or other hormone-based contraceptives, note that this medication may reduce their effectiveness. Consider using an additional form of birth control, such as condoms, to prevent pregnancy.
In children under 8 years old, this medication may cause permanent tooth discoloration (yellow-gray brown) or other tooth problems. It may also affect bone growth in these individuals. If you have concerns, discuss them with your doctor. Although this medication is not typically recommended for children under 8, there may be exceptions; consult with your doctor to determine the best course of treatment.
Tooth discoloration has also been reported in adults, but this condition may be reversible after stopping the medication and undergoing dental cleaning. Consult your doctor if you have concerns.
If you are pregnant or become pregnant while taking this medication, you may be at risk of harming your unborn baby. Inform your doctor immediately if you are pregnant or suspect you may be pregnant.
Overdose Information
Overdose Symptoms:
- Nausea
- Vomiting
- Diarrhea
- Esophageal irritation
- Photosensitivity reactions
What to Do:
In case of suspected overdose, seek immediate medical attention or call a poison control center. In the US, call 1-800-222-1222. Treatment is generally supportive and symptomatic.
Drug Interactions
Major Interactions
- Isotretinoin (increased risk of pseudotumor cerebri/benign intracranial hypertension)
- Oral retinoids (e.g., acitretin, tretinoin) (increased risk of pseudotumor cerebri/benign intracranial hypertension)
- Penicillins (tetracyclines may interfere with the bactericidal action of penicillin)
Moderate Interactions
- Antacids containing aluminum, calcium, or magnesium (decreased doxycycline absorption)
- Iron preparations (decreased doxycycline absorption)
- Bismuth subsalicylate (decreased doxycycline absorption)
- Oral contraceptives (potential for decreased efficacy of oral contraceptives, though evidence is mixed)
- Warfarin (potential for increased anticoagulant effect)
- Barbiturates (e.g., phenobarbital) (decreased doxycycline half-life)
- Carbamazepine (decreased doxycycline half-life)
- Phenytoin (decreased doxycycline half-life)
- Methoxyflurane (potential for fatal renal toxicity)
Minor Interactions
- Cholestyramine (may decrease doxycycline absorption)
Monitoring
Baseline Monitoring
Rationale: To establish a starting point for evaluating treatment efficacy.
Timing: Prior to initiation of therapy
Rationale: To ensure safe and appropriate use of the medication.
Timing: Prior to initiation of therapy
Routine Monitoring
Frequency: Monthly or as clinically indicated
Target: Reduction in lesion count, decreased erythema
Action Threshold: Lack of improvement after 12-16 weeks may warrant re-evaluation of diagnosis or treatment plan.
Frequency: At each follow-up visit
Target: Absence or mild, manageable symptoms
Action Threshold: Persistent or severe adverse effects may require dose adjustment or discontinuation.
Symptom Monitoring
- Photosensitivity (sunburn-like reaction)
- Gastrointestinal upset (nausea, diarrhea, abdominal pain)
- Headache
- Vaginal candidiasis (yeast infection)
- Esophageal irritation/ulceration (if not taken with sufficient water or if lying down too soon after dose)
- Dizziness/lightheadedness
- Blurred vision or visual disturbances (rare, suggestive of pseudotumor cerebri)
Special Patient Groups
Pregnancy
Category D. Doxycycline can cause permanent discoloration of teeth (yellow-gray-brown) and reversible inhibition of bone growth if administered during tooth development (last half of pregnancy, infancy, and childhood to the age of 8 years). Use only if the potential benefit justifies the potential risk to the fetus.
Trimester-Specific Risks:
Lactation
Doxycycline is excreted in breast milk. While the amount is generally low and absorption by the infant may be limited due to chelation with calcium in milk, there is a theoretical risk of tooth discoloration and inhibition of bone growth in the nursing infant. The manufacturer recommends that a decision be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.
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. Safety and efficacy for rosacea have not been established in pediatric patients.
Geriatric Use
No specific dose adjustment is generally required for elderly patients. However, elderly patients may be more susceptible to adverse effects such as photosensitivity or gastrointestinal irritation. Use with caution and monitor for adverse reactions.
Clinical Information
Clinical Pearls
- This specific 40mg DR formulation of doxycycline is designed for its anti-inflammatory effects in rosacea, not for its antimicrobial activity. It's crucial to emphasize this to patients to manage expectations and prevent misuse.
- Always instruct patients to take the capsule with a full glass of water and remain upright for at least 30-60 minutes to minimize the risk of esophageal irritation or ulceration.
- Advise strict sun protection (sunscreen, protective clothing) due to the photosensitivity risk, even with this lower dose.
- Remind patients about the importance of avoiding antacids, iron, and dairy products around the time of dosing to ensure proper absorption.
- Clinical improvement for rosacea may take several weeks to become apparent, so encourage patient adherence and patience.
Alternative Therapies
- Topical metronidazole (cream, gel, lotion)
- Topical azelaic acid (gel, foam, cream)
- Topical ivermectin (cream)
- Brimonidine topical gel (for erythema)
- Oxymetazoline topical cream (for erythema)
- Oral antibiotics (e.g., other tetracyclines, macrolides) at higher doses for more severe inflammatory rosacea (though not preferred for long-term use due to resistance concerns)
- Laser or light therapy (for erythema and telangiectasias)