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Sumycin Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Sumycin (Tetracycline Hydrochloride) is used to treat many different bacterial infections, such as urinary tract infections, acne, gonorrhea, chlamydia, and others. It is an antibiotic. This medication is available in generic form. Common side effects include nausea, vomiting, diarrhea, loss of appetite, mouth sores, black hairy tongue, sore throat, dizziness, headache, or rectal discomfort.
The usual daily dose of Sumycin for adults is 500 mg twice/day or 250 mg four times/day for mild to moderate infections; higher doses may be required for severe infections. For children above eight years of age, usual daily dose of Sumycin is 10 to 20 mg/lb (25 to 50 mg/kg) body weight divided in four equal doses. Sumycin may interact with cholesterol-lowering medications, isotretinoin, tretinoin, antacids, bismuth subsalicylate (i.e. Pepto-Bismol), minerals (iron, zinc, calcium, magnesium, over-the-counter vitamin and mineral supplements), blood thinners, or penicillin antibiotics. Tell your doctor all medications you are taking. Sumycin is not recommended for use during pregnancy because of possible harm to a fetus. Women of child-bearing age should use effective birth control while taking this medication. This medication passes into breast milk in very small amounts. While there have been no reports of harm to nursing infants, consult your doctor before breast-feeding.
Our Sumycin (Tetracycline Hydrochloride) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Sumycin in Detail - Patient Information: Side Effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using tetracycline and call your doctor at once if you have any of these serious side effects:
- severe headache, dizziness, blurred vision;
- fever, chills, body aches, flu symptoms;
- severe blistering, peeling, and red skin rash;
- urinating less than usual or not at all;
- pale or yellowed skin, dark colored urine, fever, confusion or weakness;
- severe pain in your upper stomach spreading to your back, nausea and vomiting, fast heart rate;
- loss of appetite, jaundice (yellowing of the skin or eyes); or
- easy bruising or bleeding, unusual weakness.
Less serious side effects may include:
- sores or swelling in your rectal or genital area;
- mild nausea, vomiting, diarrhea, or stomach upset;
- white patches or sores inside your mouth or on your lips;
- swollen tongue, trouble swallowing; or
- vaginal itching or discharge.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
Read the entire detailed patient monograph for Sumycin (Tetracycline)
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Sumycin Overview - Patient Information: Side Effects
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor right away if you have any serious side effects, including: sunburn (sun sensitivity), nail discoloration, muscle pain, difficult or painful swallowing, change in the amount of urine, brown/gray tooth discoloration, numbness/tingling of the hands/feet, unusual fatigue, new signs of infection (e.g., persistent sore throat, fever, chills), hearing changes (e.g., ringing in the ears, decreased hearing), easy bruising/bleeding, severe stomach/abdominal pain, yellowing eyes/skin, dark urine.
Tetracycline may rarely cause a serious increase in pressure inside the skull (intracranial hypertension-IH). The risk of this side effect is greater for women of childbearing age who are overweight or who have had IH in the past. If IH develops, it usually goes away after tetracycline is stopped; however, there is a chance of permanent vision loss or blindness. Get medical help right away if you have: persistent/severe headache, vision changes (such as blurred/double vision, decreased vision, sudden blindness), persistent nausea/vomiting.
This medication may rarely cause a severe intestinal condition (Clostridium difficile-associated diarrhea) due to a resistant bacteria. This condition may occur during treatment or weeks to months after treatment has stopped.. Do not use anti-diarrhea products or narcotic pain medications if you have the following symptoms because these products may make them worse. Tell your doctor immediately if you develop: persistent diarrhea, abdominal or stomach pain/cramping, blood/mucus in your stool..
Use of this medication for prolonged or repeated periods may result in oral thrush or a new yeast infection (oral or vaginal fungal infection). Contact your doctor if you notice white patches in your mouth, a change in vaginal discharge or other new symptoms.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, skin lesions/sores, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing, new or worsening swelling/pain in the joints, chest pain, fast/irregular heartbeat.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Sumycin (Tetracycline)
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Sumycin FDA Prescribing Information: Side Effects
Gastrointestinal: anorexia, epigastric distress, nausea, vomiting, diarrhea, bulky loose stools, stomatitis, sore throat, glossitis, black hairy tongue, dysphagia, hoarseness, enterocolitis, and inflammatory lesions (with candidal overgrowth) in the anogenital region, including proctitis and pruritus ani. Rare instances of esophagitis and esophageal ulceration have been reported in patients receiving particularly the capsule and also the tablet forms of tetracyclines. Most of the patients were reported to have medication immediately before going to bed (see DOSAGE AND ADMINISTRATION). These reactions have been caused by both the oral and parenteral administration of tetracyclines but are less frequent after parenteral use.
Skin and Skin Structures: maculopapular and erythematous rashes. Exfoliative dermatitis has been reported but is uncommon. Onycholysis and discoloration of the nails have been reported rarely. Photosensitivity has occurred. (See WARNINGS).
Hepatic Cholestasis: has been reported rarely, and is usually associated with high dosage levels of tetracycline.
Hypersensitivity Reactions: Anaphylaxis; serum sickness-like reactions, as fever, rash, and arthralgia; urticaria, angioneurotic edema, anaphylactoid purpura, pericarditis, exacerbation of systemic lupus erythematosus.
Miscellaneous: Dizziness and headache have been reported.
When given over prolonged periods, tetracyclines have been reported to produce brown-black microscopic discoloration of thyroid glands. No abnormalities of thyroid function are known to occur. Bulging fontanels in infants and intracranial hypertension in adults have been reported. (See PRECAUTIONS-General.)
Read the entire FDA prescribing information for Sumycin (Tetracycline)
Additional Sumycin Information
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