Sumycin (Tetracycline) is used to treat a wide variety of infections, including acne. It is an antibiotic that works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections. Tetracycline can also be used in combination with anti-ulcer medications to treat certain types of stomach ulcers.
Side Effects:
Nausea, vomiting, diarrhea, loss of appetite, mouth sores, black hairy tongue, sore throat, dizziness, headache, or rectal discomfort may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.
Remember that this medication has been prescribed because your doctor 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: nail discoloration, muscle pain, difficult or painful swallowing, signs of kidney problems (such as change in the amount of urine), brown/gray tooth discoloration, numbness/tingling of the hands/feet, unusual tiredness, new signs of infection (such as sore throat that doesn’t go away, fever, chills), hearing changes (such as ringing in the ears, decreased hearing), easy bruising/bleeding, signs of liver disease (such as stomach/abdominal pain, yellowing eyes/skin, dark urine).
Tetracycline may rarely cause increased pressure around the brain (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: nausea/vomiting that doesn’t stop, headache that is severe or doesn’t go away, vision changes (such as blurred/double vision, decreased vision, sudden blindness).
This medication may rarely cause a severe intestinal condition due to a bacteria called C. difficile. This condition may occur during treatment or weeks to months after treatment has stopped. Tell your doctor right away if you develop: diarrhea that doesn’t stop, abdominal or stomach pain/cramping, blood/mucus in your stool.
Precautions:
Before taking tetracycline, tell your doctor or pharmacist if you are allergic to it; or to other tetracyclines (such as doxycycline, minocycline), or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, liver disease, problems swallowing, esophagus problems (such as hiatal hernia, reflux disease-GERD).
This drug may make you dizzy. Alcohol or marijuana (cannabis) can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).
Tetracycline may cause live bacterial vaccines (such as typhoid vaccine) to not work well. Tell your health care professional that you are using tetracycline before having any immunizations/vaccinations.
Interactions:
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor’s approval.
Some products that may interact with this drug include: atovaquone, retinoid medications taken by mouth (such as acitretin, isotretinoin), strontium, digoxin, kaolin pectin, warfarin. This medication may interfere with certain lab tests, possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug.
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