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Declomycin is an oral tablet made up of a tetracycline drug called demeclocycline. This drug is available in 150mg doses.

This medication is used to treat various different bacterial infections, this includes bacterial infections that cause acne. This medication is meant for bacterial infections only and will not help a viral infection like common cold. Common bacterial infections that Declomycin treat consist of gonorrhea, Chlamydia, urinary tract infections and even conditions like inflamed gums and mouth, elapsing fever, pneumonia and flea & tick bites! Demeclocycline works to fix these infections by stopping the growth of bacteria in the body.

Always follow instructions given to you by your doctor; they can usually be found on your prescription label if you forget.

This medication is best taken on an empty stomach and taken an hour or two within a meal.

This medication is often taken 2-4 times a day, swallowed whole.

If you find your stomach hurts after taking this tablet, you may take the next dose with food.

For maximum effectiveness, take this pill at the same time every day.

Continue to take the entire prescribed amount even if you believe your infection has healed. Stopping too early can cause the infection to return.


It is highly recommended you do not take Declomycin if you are allergic to demeclocycline or to similar antibiotics such as doxycycline (Adoxa, Alodox, Avidoxy, Oraxyl, Doryx, Oracea, Vibramycin), minocycline (Dynacin, Minocin, Solodyn), or tetracycline (Ala-Tet, Brodspec, Panmycin, Sumycin, Tetracap).

This medication can harm an unborn baby and should not be taken if you are pregnant.

Demeclocycline can cause ineffectiveness in birth control pills. Use a non-hormone method of birth control to ensure you do not get pregnant.

Using this product could cause an effect on bone and tooth development in a nursing baby. Avoid breast feeding if you are on Declomycin.

Do not give this product to a child under the age of 8 years old as it can stunt growth or cause permanent pigmentation of the teeth.

If you are being treated for gonorrhea, your doctor may ask to test you to make sure you do not also have syphilis (another sexually transmitted disease).

To allow for easy absorption of the demeclocycline, do not take iron supplements, multivitamins, calcium supplements, antacids, or laxatives within 2 hours before or after taking demeclocycline; also avoid products that contains bismuth subsalicylate (such as Pepto-Bismol) within 2 hours before or after taking demeclocycline.

Tell your doctor if you have any of these other conditions to determine if this product is safe for you:

kidney disease; liver disease; or diabetes.

Side Effects

Side effects are not always present in everyone. Others are more sensitive to side effects while they could be mild for others. If side effects ever become too much to handle, contact your doctor right away.

Common side effects of Declomycin may include:

 sores or swelling in your rectal or genital area;  mild nausea, vomiting, diarrhea, loss of appetite;  white patches or sores inside your mouth or on your lips;  swollen tongue, trouble swallowing; or  vaginal itching or discharge.

The above side effects should not alarm you.

Serious side effects of Declomycin may include:

fever, chills, body aches, flu symptoms; easy bruising, unusual bleeding (nose, mouth, vagina, or rectum), purple or red pinpoint spots under your skin; pale skin, dark colored urine, jaundice (yellowing of the skin or eyes); confusion, mood changes, weakness, increased thirst or urination; swelling, weight gain, urinating less than usual or not at all; chest pain, wheezing, dry cough, rapid breathing, feeling short of breath; severe tingling, numbness, pain, muscle weakness; headache, ringing in your ears, dizziness, nausea, vision problems, pain behind your eyes; sore throat and headache with a severe blistering, peeling, and red skin rash; or severe pain in your upper stomach spreading to your back, nausea and vomiting, fast heart rate.

If you have any of the above side effects, contact your doctor right away.


What is the average dose for an adult? For a child?

Adult Dose for Bacterial Infection: 150 mg 4 times a day or 300 mg twice a day

Pediatric Dose for Bacterial Infection: 8 years of age+: 7 to 13 mg per kg a day, divided in 2 to 4 doses

Maximum Pediatric dose: 600 mg/day

What should I avoid while on Declomycin?

Do not take this medication with milk or other dairy products. Dairy products can affect the absorption of the drug. Avoid sun tanning or tanning beds while on this medication as your sensitivity to sunburns/radiation will increase.

What are the signs of an allergic reaction?

Signs of an allergic reaction include hives, difficulty breathing, and swelling of your face, lips, tongue, or throat.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if your next scheduled dose is approaching. Never take extra medicine to make up the missed dose.

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