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Dynacin (Oral)

Generic name: minocycline

Brand names: Cleeravue-M, Dynacin, Minocin, Minolira, Myrac, Solodyn, Ximino

Last updated June 8, 2026 0 views
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Uses for Dynacin

Minocycline is used to treat pimples and red bumps (non-nodular inflammatory lesions) that happen with moderate to severe acne vulgaris in patients who are 12 years old and older.

Minocycline capsules are used to treat bacterial infections in various parts of the body. It is also used to treat anthrax infection and other infections in patients who cannot take penicillins.

Minocycline belongs to a group of medicines called tetracycline antibiotics. It works by killing bacteria or stopping them from growing. However, this medicine will not work for colds, flu, or other viral infections.

This medicine is available only with your doctor's prescription.

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Precautions while using Dynacin

It is very important that your doctor checks the progress of you or your child during regular visits. This will help your doctor see if the medicine is working properly and decide if you should keep taking it. Blood and urine tests may be needed to check for unwanted effects.

If your or your child's symptoms do not improve or if they get worse after 12 weeks of treatment, check with your doctor.

Using this medicine while you are pregnant can harm your unborn baby. The medicine may also cause birth defects if the father is taking it when his sexual partner becomes pregnant. If you become pregnant while using this medicine, tell your doctor right away.

Birth control pills may not be as effective while you are using minocycline. To prevent pregnancy, use an additional form of birth control with your pills. Other forms include condoms, a diaphragm, or contraceptive foam or jelly.

This medicine may darken the color of your skin, nails, eyes, teeth, gums, or scars. Talk with your doctor if you or your child have any concerns.

Minocycline may cause diarrhea, which can sometimes be severe. It may happen 2 months or more after you stop taking this medicine. Do not take any medicine to treat diarrhea without checking with your doctor first. Diarrhea medicines may make the diarrhea worse or longer-lasting. If you or your child have questions about this or if mild diarrhea continues or worsens, check with your doctor.

Check with your doctor right away if you or your child have pain or tenderness in the upper stomach, pale stools, dark urine, loss of appetite, nausea, vomiting, or yellow eyes or skin. These could be signs of a serious liver problem.

This medicine may cause some people to feel dizzy or lightheaded. Make sure you know how you respond to this combination of medicines before you drive, use machines, or do anything else that could be dangerous until you understand how this medicine affects you.

This medicine may cause increased pressure in your head, which can lead to permanent vision loss. Check with your doctor right away if you or your child have a severe headache, blurred vision, or any changes in vision.

Contact your doctor immediately if you or your child experience fever, rash, joint pain, or tiredness. These could be signs of an autoimmune syndrome where the body attacks itself.

Minocycline may make your skin more sensitive to sunlight than usual. Sunlight exposure, even for short periods, may cause a skin rash, itching, redness or other discoloration of the skin, or severe sunburn. When you start taking this medicine:

  • Stay out of direct sunlight, especially between 10:00 a.m. and 3:00 p.m., if possible.
  • Wear protective clothing, including a hat, and sunglasses.
  • Use a sunblock product with a sun protection factor (SPF) of at least 15. Some patients may need a higher SPF, especially if they have fair skin. If you have questions about this, check with your doctor.
  • Use a sunblock lipstick with an SPF of at least 15 to protect your lips.
  • Do not use a sun lamp or tanning bed or booth.

If you have a severe reaction from the sun, check with your doctor.

This medicine may cause serious allergic reactions, including anaphylaxis, which requires immediate medical attention. The most serious signs of this reaction are very fast or irregular breathing, gasping for breath, or fainting. Other signs may include changes in skin color of the face, very fast but irregular heartbeat or pulse, hive-like swellings on the skin, and puffiness or swelling of the eyelids or around the eyes. If these side effects occur, get emergency help right away.

Before you have any medical tests, tell the medical doctor in charge that you or your child are taking this medicine. Some test results may be affected by this medicine.

If you plan to have children, talk with your doctor before using this medicine. It may affect sperm cell formation in males.

Do not take other medicines unless you have discussed them with your doctor. This includes prescription or over-the-counter (OTC) medicines and herbal or vitamin supplements.

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Before using Dynacin

In deciding to use a medicine, you and your doctor must weigh the risks against the benefits. For this medicine, consider the following:

Allergies

Let your doctor know if you have ever had any unusual or allergic reactions to this medicine or any other medicines. Also, inform your healthcare professional about any other allergies you have, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Studies done so far have not shown any specific problems in children 12 years of age and older that would limit the usefulness of minocycline extended-release capsules and tablets. However, safety and effectiveness have not been established for children younger than 12 years of age.

Minocycline may cause permanent discoloration of teeth and may slow down bone growth. This medicine should not be given to children younger than 8 years of age unless directed by the child's doctor.

Geriatric

Studies so far have not shown any specific problems in elderly patients that would limit the usefulness of minocycline. However, older adults are more likely to have kidney, liver, or heart problems, which may require caution and adjustments in the dose when taking minocycline.

Breast Feeding

Studies suggest that this medication may change milk production or its composition. If an alternative to this medication is not prescribed, you should watch for side effects in the infant and ensure they are getting enough milk.

Interactions with Medicines

Some medicines should not be used together at all, while others may be used together with caution. If you take this medicine, it is especially important for your healthcare professional to know if you are taking any of the medicines listed below. The following interactions are not necessarily all-inclusive but have been selected based on their potential significance.

Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or may change some of the other medicines you take.

  • Acitretin

Using this medicine with any of the following medicines is usually not recommended but may be necessary in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you take one or both.

  • Amoxicillin
  • Ampicillin
  • Atazanavir
  • Bacampicillin
  • Bexarotene
  • Cholera Vaccine, Live
  • Cloxacillin
  • Desogestrel
  • Dicloxacillin
  • Dienogest
  • Digoxin
  • Drospirenone
  • Estradiol
  • Ethinyl Estradiol
  • Ethynodiol
  • Etretinate
  • Gestodene
  • Isotretinoin
  • Levoketoconazole
  • Levonorgestrel
  • Magnesium Sulfate
  • Mestranol
  • Methicillin
  • Methotrexate
  • Methoxyflurane
  • Nafcillin
  • Nomegestrol
  • Norethindrone
  • Norgestimate
  • Norgestrel
  • Oxacillin
  • Palovarotene
  • Penicillin G
  • Penicillin G Benzathine
  • Penicillin G Procaine
  • Penicillin V
  • Piperacillin
  • Pivampicillin
  • Porfimer
  • Sultamicillin
  • Temocillin
  • Tretinoin

Using this medicine with any of the following medicines may increase the risk of certain side effects, but using both may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you take one or both.

  • Aluminum Carbonate, Basic
  • Aluminum Hydroxide
  • Aluminum Phosphate
  • Aminolevulinic Acid
  • Calcium
  • Dihydroxyaluminum Aminoacetate
  • Dihydroxyaluminum Sodium Carbonate
  • Iron
  • Magaldrate
  • Magnesium Carbonate
  • Magnesium Hydroxide
  • Magnesium Oxide
  • Magnesium Trisilicate
  • Vitamin A

Interactions with Food/Tobacco/Alcohol

Certain medicines should not be taken at or around mealtime or with specific foods due to potential interactions. Using alcohol or tobacco with some medicines may also cause interactions. The following interactions are not necessarily all-inclusive but have been selected based on their potential significance.

Using this medicine with any of the following may increase the risk of certain side effects but may be unavoidable in some cases. If used together, your doctor may change the dose or how often you take this medicine, or give you special instructions about using food, alcohol, or tobacco.

  • Dairy Food

Other Medical Problems

Other medical problems may affect how you can use this medicine. Be sure to tell your doctor if you have any other medical issues, especially:

  • Diarrhea or
  • Increased pressure in the head or
  • Infection (e.g., fungi), any other type of or
  • Liver disease—Use with caution. May worsen these conditions.
  • Kidney disease—Use with caution. The effects may be increased due to slower removal of the medicine from the body.

This section was rewritten for readability and reviewed for meaning.

Side Effects of Dynacin

Along with its necessary effects, this medicine may cause some unwanted effects. Not all of these side effects may happen, but if they do, they may need medical attention.

Check with your doctor right away if any of the following side effects occur:

Incidence not known

  • Black, tarry stools
  • blistering, peeling, or loosening of the skin
  • blood in the urine or stools
  • blurred or double vision
  • bulging soft spot on the head of an infant
  • chest pain, possibly moving to the left arm, neck, or shoulder
  • confusion
  • diarrhea
  • dizziness or lightheadedness
  • eye pain
  • fast heartbeat
  • general feeling of discomfort or illness
  • general tiredness and weakness
  • hives, itching, or skin rash
  • joint or muscle pain
  • large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
  • loss of appetite
  • nausea or vomiting
  • red skin lesions, often with a purple center
  • severe headache
  • severe stomach pain
  • sores, ulcers, or white spots on the lips or in the mouth
  • troubled breathing
  • unusual bleeding or bruising
  • upper right abdominal or stomach pain
  • yellow eyes and skin

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Your health care professional may also be able to tell you ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue, are bothersome, or if you have any questions about them:

Less common

  • Continuing ringing or buzzing or other unexplained noise in the ears
  • difficulty with moving
  • hearing loss
  • hives or welts
  • muscle stiffness
  • redness of the skin
  • sleepiness or unusual drowsiness

Incidence not known

  • Bloating
  • discoloration of the tooth
  • increased sensitivity of the skin to sunlight
  • indigestion
  • severe sunburn

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

In the U.S.

  • Cleeravue-M
  • Dynacin
  • Minocin
  • Minolira
  • Myrac
  • Solodyn
  • Ximino

Available Dosage Forms:

  • Capsule, Extended Release
  • Tablet
  • Tablet, Extended Release
  • Capsule

Therapeutic Class: Antibiotic

Chemical Class: Tetracycline (class)

This section was rewritten for readability and reviewed for meaning.

Proper use of Dynacin

Take this medicine exactly as directed by your doctor. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered. To do so may increase the chance of side effects. This medicine is not for long-term use.

This medicine comes with a patient information leaflet. Read and follow the instructions carefully. Ask your doctor if you have any questions.

Swallow the capsule, extended-release capsule, or tablet whole with water. Do not, crush, break, or chew it.

You may take this medicine with or without food. Taking this medicine with food may lower your chances of irritation or ulcers in your esophagus (tube that connects mouth to the stomach).

To help clear up your infection completely, keep taking this medicine for the full time of treatment, even if you begin to feel better after a few days. If you stop taking this medicine too soon, your symptoms may return.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

  • For oral dosage form (capsules):For infections: Adults—At first, 200 milligrams (mg) followed by 100 mg every 12 hours. Some patients may start at 2 or 4 capsules of 50 mg followed by one 50 mg capsule 4 times a day. Children 8 years of age and older—Dose is based on body weight and must be determined by your doctor. The initial dose is usually 4 milligram (mg) per kilogram (kg) of body weight followed by 2 mg per kg of body weight every 12 hours. However, the dose should not be more than the usual adult dose. Children younger than 8 years of age—Use is not recommended.
  • For oral dosage forms (extended-release capsules or tablets):For treatment of acne vulgaris: Adults and children 12 years of age and older—Dose is based on body weight and must be determined by your doctor. The dose is usually 1 milligram (mg) per kilogram (kg) of body weight per day for 12 weeks. Children 8 to 12 years of age—Use and dose must be determined by your doctor. Children younger than 8 years of age—Use is not recommended.

Missed Dose

If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

Storage

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Ask your healthcare professional how you should dispose of any medicine you do not use.

Frequently asked questions

  • Does doxycycline work for acne?

Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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