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Doctor insights on: Bactrim Insomnia

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I get insomnia from bactrim (sulfamethoxazole and trimethoprim) ds 800-160. How long after taking a pill might this impact me?

I get insomnia from bactrim (sulfamethoxazole and trimethoprim) ds 800-160. How long after taking a pill might this impact me?

See answer: The half-life of a drug is the time it takes for a drug to lose half (50%) of its pharmacologic or physiologic properties. The half-life of the two drug ingredients in Bactrim (sulfamethoxazole and trimethoprim) are 8 and 10 hrs. Therefore, after 5 half-lifes or 40 and 50 hrs for the 2 drugs, 97% of the drugs will be out of your system (~2 days). One would expect any related insomnia to be short? ...Read more

Dr. Heidi Fowler
1,703 Doctors shared insights

Insomnia (Definition)

A sleep disorder in which you cannot fall or stay asleep. It usually accompanies another sleep, medical, or psychiatric disorder, and can lead to memory impairment, mood changes, and increased risk of ...Read more


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After taking Bactrim (sulfamethoxazole and trimethoprim) ds twice daily for five days, last pill was this a.m. Still have burning and pain from a bladder infection. Terrible insomnia too?

After taking Bactrim (sulfamethoxazole and trimethoprim) ds twice daily for five days, last pill was this a.m. Still have burning and pain from a bladder infection. Terrible insomnia too?

If you still: Have urinary symptoms despite a course of Bactrim (sulfamethoxazole and trimethoprim) DS, you might have persistent uti with resistant bacteria. Get back to your doctor. Insomnia is probably not related to Bactrim (sulfamethoxazole and trimethoprim). ...Read more

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How effective is sulfamethoxazole_/_trimethoprim (Bactrim) for treating dysentery?

How effective is sulfamethoxazole_/_trimethoprim (Bactrim) for treating dysentery?

Bactrim: Trimethoprim-sulfamethoxazole or Bactrim should be an effective drug for dysentry. Hopefully your doctor obtained a stool culture which gives the name of the infecting organism, and the sensitivities of the germ. Armed with that information in hand, the best therapy can be prescribed. About 10% of people have side effects from Bactrim - if that's you- call the doc back for new recommendations. ...Read more

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What are bactrim/septra best used for?

What are bactrim/septra best used for?

See below: They are sulfa based drugs often used to treat urinary tract infections. They are also used to treat MRSA infections. ...Read more

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Conflicted on if it is okay to have a couple beers while on bactrim. Will I be okay? No hard liquor.

Conflicted on if it is okay to have a couple beers while on bactrim. Will I be okay? No hard liquor.

No problem: Contrary to popular beliefs, there usually is no problem drinking alcohol (in moderation) while taking antibiotics, including Bactrim. Just don't overdo it. ...Read more

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I'm on bactrim and everytime I smoke it makes me feel really nauseous, should I quit while I'm taking the medication?

I'm on bactrim and everytime I smoke it makes me feel really nauseous, should I quit while I'm taking the medication?

Good question: Your question should be, what is more important, your health or your need to smoke. This symptom of nausea is a wake up call TO STOP SMOKING forever and continue to take the Bactrim to rid yourself of the infection. I know it can be hard to stop smoking, but as is said the journey of a long life starts with the first step and that step is to stop smoking to avoid cancer & lung disease. ...Read more

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Can you still feel tired and no energy a few days after stopping Bactrim DS?

Probably not bactrim: Bactrim is not a likely cause of such symptoms, and therefore no surprise stopping it hasn't made any difference. Work with your doctor about other causes. Good luck. ...Read more

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If I take one bactrim, how long before I can take cipro (ciprofloxacin) again?

If I take one bactrim, how long before I can take cipro (ciprofloxacin) again?

Now: Cipro (ciprofloxacin) and Bactrim are both anti-biotics. They could potentially be taken at the same time. Why 1 bactrim? If you are treating a urinary tract infection often, the Cipro (ciprofloxacin) would be sufficient. This treatment should not be without medical supervision, please consult your prescriber or pharmacist for further assistance. ...Read more

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Can bactrim treat gonnorhea? Was prescribed for UTI but also tested possitive for gonnorhea.

Can bactrim treat gonnorhea? Was prescribed for UTI but also tested possitive for gonnorhea.

Gonorrhea treatment: Trimethoprim-sulfamethoxazole (Bactrim®) is not recommended or reliable against gonorrhea. It might work but is dangerously risky; you need proper gonorrhea treatment with an injection of ceftriaxone plus either azithromycin or doxycycline. Contact your doctor immediately to arrange treatment. Also make sure all recent (1-2 mo.) sex partners are tested and treated. Good luck! ...Read more

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I was just diagnosed with ca-mrsa and I'm scared since it is often resistant to drugs. I just started bactrim ds tonight. What are the chances of it not responding to any drug? How can you know if it's caught early enough? Thank you!

I was just diagnosed with ca-mrsa and I'm scared since it is often resistant to drugs. I just started bactrim ds tonight. What are the chances of it not responding to any drug? How can you know if it's caught early enough? Thank you!

Partially resistant: Ca MRSA is not particularly worse than having regular staph infection. It is not related to the flesh eating bacteria scare. The choice of antibiotics is limited, but generally the infection is sensitive to at least a few of the mainstream antibiotics of which Bactrim (sulfamethoxazole and trimethoprim) is one. If your doctor thought you were at great risk you would not be at home. ...Read more

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Can bactrim/sulfameth help clear chlamydia?

Can bactrim/sulfameth help clear chlamydia?

No: This would not be adequate treatment for chlamydia.Erythromycin like drugs, tetracyclines and occasionally the floxins (ofloxacin) are used to treat this family of germs. ...Read more

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Can I smoke marijuana while taking bactrim?

Can I smoke marijuana while taking bactrim?

Antibiotics: Smoking marijuana shouldn't have any effect on the antibiotics. ...Read more

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What's better for strept cipro (ciprofloxacin) or bactrim?

What's better for strept cipro (ciprofloxacin) or bactrim?

Neither actually: If you are talking about a group a strep infection, such as strep throat, an antibiotic in the penicillin family (penicillin, amoxicillin, etc.) is the preferred treatment. Otherwise a cephalosporin such as Cephalexin (keflex) is a good alternative. ...Read more

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If im not allergic to bactrim can I be allergic to cipro (ciprofloxacin)?

Not likely: Just because you have an allergy to Bactrim doesn't put you at increased risk for developing an allergy to cipro (ciprofloxacin). There are lots of options for antibiotics that don't cross-react with sulfa drugs so you should be fine. If you want to understand your drug allergy in more detail see a board certified Allergist for further workup and evaluation. ...Read more

Bactrim (Definition)

Trimethoprim and sulfamethoxazole, cotrimoxazole is a combination antibiotic that is used to treat a ...Read more