But in some places, Bactrim isn’t as strong as it should be against UTI-causing bacteria because the bacteria are no longer sensitive to the medication, a phenomenon known as antibiotic resistance.Ĭommon dose: One double-strength tablet (160 mg of trimethoprim/800 mg of sulfamethoxazole) twice a day for 3 days TMP/SMX works well for UTI treatment in general. Together, the powerful combination blocks two important steps required for certain bacteria to make the proteins they need to survive. How it Works: Trimethoprim/sulfamethoxazole (generic Bactrim) is a combination drug containing two antibiotics: trimethoprim and sulfamethoxazole. Trimethoprim/sulfamethoxazole (Bactrim, Septra) Here are a few important facts about those three. Trimethoprim/sulfamethoxazole, nitrofurantoin, and fosfomycin are the most preferred antibiotics for treating a UTI. Not all antibiotics work for treating UTIs, but several do. If you have a fungal or viral UTI, antibiotics won’t help. It’s worth noting that antibiotics only treat UTIs and other infections caused by bacteria. They either stop those bacteria from growing or directly kill the bacteria altogether. If you have a bacterial UTI, the only way to treat it is by getting rid of the bacteria that’s causing it. The pharmacist should be able to look at the ingredients in both medications and determine if there are any big differences, like one drug contains lactose and another does not.UTIs can be caused by many different types of germs including bacteria or fungi - and in rare cases, even viruses. Lastly, if you strongly feel this may be due to a difference in generics, it would be recommended to contact the pharmacies where both prescriptions were filled and determine which manufacturer of the generic Macrobid you took this year and last year. If by day 5 the symptoms are not starting to get better or have become worse, it is time to call your doctor or other health care provider. Typically, you should start feeling better after taking the antibiotic for 3 to 5 days. Often in infections, your symptoms may get worse before they get better. Urinary tract infections can cause a variety of symptoms including fatigue. However, a more plausible explanation for your fatigue is the infection itself.
In more serious allergic reactions, difficulty breathing which would require immediate medical attentionįatigue is a possible reaction in patients diagnosed with Celiac disease and for some people having an allergic reaction.Digestive problems such as nauseas, vomiting or diarrhea.Not knowing the exact generic taken this year vs last year, makes it very difficult to determine if your reaction was due to different inactive ingredients however.Ī reaction to a filler can often present itself as an allergic reaction. Most generic drugs that are manufactured by different companies do in fact contain different inactive ingredients. For patients with known food allergies, dietary restrictions, known allergies to certain fillers or with conditions like lactose intolerance or Celiac Disease, it is certainly possible for these patients to have a reaction to different generics if there is indeed a difference in formulation. For most patients, differences in fillers between drug formulations will pose no issue. Macrobid (Nitrofurantoin) is an antibiotic used in the treatment of uncomplicated urinary tract infections. At present, I am on generic Macrobid and feel really lousy. Last year I was on Macrobid generic and didn’t seem to have side effects.