Compare Keflex vs. Penicillin
Head-to-head comparisons of medication uses, side effects, ratings, and more.
|Kills bacteria. Keflex (Cephalexin) is good for treating many bacterial infections and is available as generic. However, if you are on medications to thin your blood, you can be more likely to bleed.||Kills bacteria. Penicillin Vk (Penicillin) is good for treating many bacterial infections and is available as a generic. You may need to use another form of birth control along with your birth control pills. It's also best taken on an empty stomach but it can cause an upset stomach.|
|Find lowest prices|
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|Reviews & ratings|
The Keflex FDA package insert doesn’t have numbers about how common side effects are.More about Keflex side effects »
The Penicillin FDA package insert doesn’t have numbers about how common side effects are.More about Penicillin side effects »
|How it works|
|Keflex (Cephalexin) is an antibiotic. It kills bacteria by preventing them from making their own protective covering.||Penicillin Vk (Penicillin) is an antibiotic. It kills bacteria by preventing them from making their own protective covering.|
|Type of medication|
› CephalosporinPrescription only
› PenicillinPrescription only
|Used for (click to learn more)|
|Risk factors for serious side effects|
BFDA pregnancy category (Probably safe)
Research studies with animals haven’t found a risk to unborn babies, but it hasn’t been properly studied in humans.See the FDA package insert
NFDA pregnancy category (Unknown)
The FDA hasn’t classified this medicine’s effects on unborn babies. Talk with your doctor about this medicine if you’re pregnant or planning on it.See the FDA package insert
|Upsides and benefits|
|Downsides and risks|
|Tips from our pharmacists for people taking the medication|
|More about KeflexSide effectsReviews & ratingsAlternativesFDA package insert||More about PenicillinSide effectsReviews & ratingsAlternativesFDA package insert|