Compare Biaxin vs. Penicillin

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Biaxin
(clarithromycin)

Penicillin Vk
(penicillin)

Coming soon.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.
Reviews & ratings
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Have you used Biaxin (clarithromycin)?
Worth itNot sureNot worth it
Reviews for Penicillin
71%
+29% better vs. Biaxin
52%
+48% better vs. Biaxin
12%
-21% worse vs. Biaxin
1297 reviews
Have you used Penicillin Vk (penicillin)?
Worth itNot sureNot worth it
Side effects
BiaxinPenicillin

We haven’t found good data for Biaxin side effects.

FDA side effect reports for Biaxin »

The Penicillin FDA package insert doesn’t have numbers about how common side effects are.

More about Penicillin side effects »
How it works
BiaxinPenicillin
Coming soon.Penicillin Vk (Penicillin) is an antibiotic. It kills bacteria by preventing them from making their own protective covering.
Type of medication
BiaxinPenicillin
Prescription only
Available as
BiaxinPenicillin
  • Pill
  • Extended release
  • Liquid
  • Pill
Used for
BiaxinPenicillin
  • Acute Infective Exacerbation Of Chronic Bronchitis Acute Otitis Media Community Acquired Pneumonia Disseminated Infection Due To Mycobacterium Avium Intracellulare Group Disseminated Infection Due To Mycobacterium Avium Intracellulare Group Prophylaxis HIV Infection Duodenal Ulcer Disease Helicobacter Pylori Gastrointestinal Tract Infection Infection Of Skin AND OR Subcutaneous Tissue
Risk factors for serious side effects
BiaxinPenicillin
    Coming soon.
    • Prior severe allergic reaction to Penicillin Vk (Penicillin)
    Detailed Penicillin Vk (penicillin) risks & warnings »
    Pregnancy

    Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

    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.

    Upsides and benefits
    BiaxinPenicillin
    Coming soon
    • Available in generic.
    • Available in different forms: tablet, capsule and suspension.
    • Used to treat many types of bacterial infections.
    Downsides and risks
    BiaxinPenicillin
    Coming soon
    • Many bacteria have developed resistance. Your doctor may run tests to see if Penicillin will work on your infection.
    • Can make birth control pills less effective.
    • Best taken on an empty stomach, but can cause stomach upset and diarrhea.
    Tips from our pharmacists for people taking the medication
    BiaxinPenicillin
    Coming soon
    • Take this medication exactly how your doctor tells you to.
    • If you're taking birth control pills, this medication can make them less effective.
    • Try to take it on an empty stomach. If this gives you an upset stomach, take it with food.
    • Can cause diarrhea, nausea or vomiting.
    Learn more
    More about BiaxinSide effectsReviews & ratingsFDA package insert
    Have you used Biaxin (clarithromycin)?
    Worth itNot sureNot worth it
    More about PenicillinSide effectsReviews & ratingsAlternativesFDA package insert
    Have you used Penicillin Vk (penicillin)?
    Worth itNot sureNot worth it