Compare Keflex vs. Bactrim
Head-to-head comparisons of medication uses, side effects, ratings, and more.
Keflex (cephalexin) is good for treating many bacterial infections, and is available as a generic.
Bactrim (sulfamethoxazole / trimethoprim) is good for treating many bacterial infections and is available as a generic. However, you can be more likely to sunburn.
- Available in generic.
- Available in different forms: tablet, capsule, and suspension.
- Used to treat many types of bacterial infections.
- Can be taken with or without food.
- Generally few side effects compared with other antibiotics.
- Widely available as a generic product and in a variety of formulations (tablet, capsule, suspension).
- Works well to treat many types of bacterial infections
- Can cause diarrhea.
- You may need to take Keflex (cephalexin) 2 to 4 times a day, which can be hard to remember.
- If you're allergic to penicillins or other antibiotics, you might not be able to take this medicine.
- Makes you sensitive to the sun.
- Can upset your stomach
- Drink plenty of water or fluids to avoid harming your kidneys
- May cause birth defects
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- New infections while taking Keflex (cephalexin)
- Weakened immune system
- Not taking Keflex (cephalexin) correctly
- Allergic reaction
- History of penicillin or cephalosporin allergies
- Harm to fetus
- Lower kidney function
- Taking other medicines that lower kidney function