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Doctor insights on: Trimethoprim Sulfamethoxazole Allergy

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Allergy (Definition)

An allergy is an exagerated immune responce to a typically benign trigger. You can have allergic responces to many things like pollens, animal dander, foods, medications, among other things. Symptoms may be bothersome, but benign, or can be fatal. Not all reactions to exposures are allergies and if you think you may be allergic , i recommend being evaluated by ...Read more


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Is trimethoprim sulfamethoxazole likely to cause hives?

Is trimethoprim sulfamethoxazole likely to cause hives?

As likely as any: Trimethoprim sulfamethoxazole (septra (sulfamethoxazole and trimethoprim) or bactrim) is an antibiotic used for urinary, respiratory and middle ear infections. Its use has increased because it is effective against many strains of MRSA (methicillin-resistant staph aureus). Like other drugs taken intermittently it can trigger allergic reactions. Hives are a common symptom of allergic reactions to drugs. ...Read more

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Treating Skin Allergies (Checklist)

Use hydrocortisone
2x day
Do not use diphenhydramine topical cream
once
Avoid the offending agent (s)
once
Find out if you are allergic to nickel, as nickel is often the cause of skin allergies
once
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Can someone with bactrim (sulfamethoxazole and trimethoprim) sulfa allergy take doxycycline?

Can someone with bactrim (sulfamethoxazole and trimethoprim) sulfa allergy take doxycycline?

Yes: There should be no interaction between sulfa or an allergy to Bactrim (sulfamethoxazole and trimethoprim) (which contains a sulfa antibiotic - sulfamethoxazole and another component, trimethoprim) and doxycycline. ...Read more

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Does bactrim (sulfamethoxazole and trimethoprim) treat shingles?

Does bactrim (sulfamethoxazole and trimethoprim) treat shingles?

No bactrim (sulfamethoxazole and trimethoprim) for virus: No. Only is there is a secondary infection. Bactrim (sulfamethoxazole and trimethoprim) is an anti-biotics and works against certain bacteria. Shingles is due to a virus (herpes zoster) virus and antibiotics do not work against viruses. ...Read more

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Please describe the medication: trimethoprim sulfamethoxazole?

Please describe the medication: trimethoprim sulfamethoxazole?

Antibiotic: Treats or prevents infections. This medicine is a "sulfa drug" (sulfonamide). ...Read more

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Is amoxicillin / clavulanate same as bactrim (sulfamethoxazole and trimethoprim)?

Is amoxicillin / clavulanate same as bactrim (sulfamethoxazole and trimethoprim)?

No: Amoxicillin / clavulanate is a penicillin-type antibiotic. The clavulanate increases susceptability of some bacteria to the amoxicillin. Bactrim (sulfamethoxazole and trimethoprim) is a combination sulfa antibiotic composed of two antibiotics: trimethprim and sulfamethoxazole. ...Read more

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Staph infection, bactrim (sulfamethoxazole and trimethoprim) ointment or neosporin?

Staph infection, bactrim (sulfamethoxazole and trimethoprim) ointment or neosporin?

Staph aureus: You do not say what type of infection you have or how you know it is staphylococcal. You need to see a doctor. ...Read more

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What is Bactrim (sulfamethoxazole and trimethoprim)?

What is Bactrim (sulfamethoxazole and trimethoprim)?

Bactrim (sulfamethoxazole and trimethoprim): Bactrim (sulfamethoxazole and trimethoprim) contains sulfonamide & is used to treat or prevent infections.. ...Read more

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Does bactrim (sulfamethoxazole and trimethoprim) treat herpes?

Does bactrim (sulfamethoxazole and trimethoprim) treat herpes?

No, it does not: Bactrim (sulfamethoxazole and trimethoprim) (also called Septra or Trimethoprim-Sulfamethoxazole) is an antibiotic for treating bacterial infections. It does not stop viruses. Thus, it does not treat herpes infections, which are caused by viruses. ...Read more

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Can bactrim (sulfamethoxazole and trimethoprim) treat mrsa?

MRSA: Local skin lesions are generally easily treated with Bactrim (sulfamethoxazole and trimethoprim) or septra, assuming you are not allergic to sulfa drugs. ...Read more

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Uti septra (sulfamethoxazole and trimethoprim) ds side effects?

Overall rather safe: Allergic side effects: skin rash, urticaria, photosensitivity, rarely - anaphylaxis, stevens-johnson syndrome. Gastro-intestinal: diarrhea, nausea, abdominal pain, anorexia, stomatitis & rarely hepatitis. Kidney: interstitial nephritis, BUN & creatinine elevation & rarely kidney failure. Mood changes, cough & shortness of breath, easy bruising, weakness, insomnia, fatigue. Any changes noted ? Se. ...Read more

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Does Bactrim (sulfamethoxazole and trimethoprim) have sulfa. I am allergic to sulfa? Which one is better for UTI Keflex or Bactrim (sulfamethoxazole and trimethoprim)

Does  Bactrim (sulfamethoxazole and trimethoprim) have sulfa.  I am allergic to sulfa? Which one is better for UTI Keflex or Bactrim (sulfamethoxazole and trimethoprim)

Bactrim (sulfamethoxazole and trimethoprim) is sulfa: Bactrim (sulfamethoxazole and trimethoprim) contains a sulfonamide ("sulfa drug") called sulfamethoxazole. It needs to be avoided by people with sulfa allergy. Cephalexin (Keflex) is less reliable for UTI; many UTI bacteria are resistant to it. Ask your doctor about possible treatment with a quinolone like ciprofloxacin, levofloxacin, and others. ...Read more

Dr. Ziad Akl Dr. Akl
2 doctors agreed:
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What class is bactrim (sulfamethoxazole and trimethoprim) ds?

Dr. Ziad Akl Dr. Akl
2 doctors agreed:

2 classes: Bactrim (sulfamethoxazole and trimethoprim) is a combination of 2 drugs, trimetoprim and sulfamethoxazole. The first is a pyrimidine derivative and the second is a sulfonamide (sulfa). Ds stands for double strength as opposed to ss, single strength. The difference is in the dosage. ...Read more

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If allergic to Bactrim (sulfamethoxazole and trimethoprim) & Ceclor, is allergy to all sulfa drugs & cephalosporins assumed?

If allergic to Bactrim (sulfamethoxazole and trimethoprim) & Ceclor, is allergy to all sulfa drugs & cephalosporins assumed?

Only if true allergy: Often, a side effect to a particular drug may by mistaken as an allergic reaction to a drug. If what you have experienced is a true allergic reaction, then you should avoid these types of drugs. ...Read more

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Alcohol while taking generic bactrim (sulfamethoxazole and trimethoprim) for sinus infection.

Alcohol while taking generic bactrim (sulfamethoxazole and trimethoprim) for sinus infection.

Sinus infection: If you are on an antibiotic for a sinus infection, perhaps refraining from alcohol isn't a bad idea. ...Read more

Dr. John Chiu
2,720 doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more


Dr. Dariush Saghafi
129 doctors shared insights

Sulfamethoxazole (Definition)

Sulfamethoxazole is a streptogramin which is a kind of anti-bacterial ...Read more