Compare Flagyl vs. minocycline

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

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Flagyl (metronidazole)

Prescription only

Solodyn (minocycline)

Prescription only
Treats and prevents bacterial infections.

Flagyl (metronidazole) is very good at treating certain bacterial infections, but you can't have any alcohol while on it since it'll make you throw up a lot.

Treats bacterial infections.

Solodyn (minocycline) is effective in treating a variety of bacterial infections such as acne, but it can cause permanent tooth staining, especially in an unborn baby and those who are age 8 or younger.

4.0/ 5 average rating with 17 reviewsforminocycline
Upsides
  • Flagyl (metronidazole) is good at killing a variety of bacteria.
  • Unlike many other antibiotics, Flagyl (metronidazole) is less likely to make bacteria resistant to it.
  • Most forms are available as a generic, so it's relatively cheap.
  • May be taken with or without food.
  • Solodyn (minocycline) is used in combination with other medications to treat severe acne.
  • Available as a generic form.
  • Solodyn (minocycline) is less likely to cause sunburn than other tetracycline antibiotics.
  • Can be a good alternative treatment for certain infections when penicillin can't be used.
Downsides
  • You can't drink alcohol while on Flagyl (metronidazole), and for at least 3 days after you finish it.
  • Side effects can include nausea, headache, stomach upset, and a metallic taste in your mouth.
  • If you're taking Flagyl (metronidazole) for a long time, there's a risk of more side effects, such as nerve damage.
  • If you're on blood thinners, let your doctor know. Flagyl (metronidazole) can interact with your medicines and make you more likely to bleed.
  • It can make birth control pills less effective, so barrier methods of birth control like condoms or diaphragms should be used while on Solodyn (minocycline).
  • Can permanently discolor your teeth, mouth, gums and skin. This is more common for pregnant women in their last half of pregnancy, infants, and children 8 and younger.
  • Your skin may be more sensitive to the sun and your chances of getting sunburned are higher.
  • May cause dizziness and affect your driving ability.
  • Not a good option for pregnant women since it can slow down the bone development of a fetus (unborn baby).
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Used for
Dosage forms
  • Pill
  • Extended-release pill
  • Injection
  • Pill
  • Extended-release pill
Price
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Reviews
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17 reviews so far
53%
saidit'sworth it
59%
saiditworked well
18%
saidit'sa big hassle

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Side effects
13possible side effects
  • Headache
    18%
  • Nausea
    10%
  • Metallic taste
    9%
  • Genital itching
    5%
  • Dizziness
    4%
  • Diarrhea
    4%
  • Stomach problems
    4%
  • Overgrowth of yeast
    3%
  • Stuffy nose
    3%
  • Menstrual cramps
    3%
  • Abnormal urine
    3%
  • Dry mouth
    2%
  • Urinary tract infection
    2%
See more detailed side effects
The Solodyn (minocycline) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
  • Seizure or brain problems
    • Taking high doses of Flagyl (metronidazole)
    • Taking Flagyl (metronidazole) for a long time
  • Nerve damage
    • Taking high doses of Flagyl (metronidazole)
    • Taking Flagyl (metronidazole) for a long time
  • Cancer
  • New infection while taking Flagyl (metronidazole)
    • Taking Flagyl (metronidazole) incorrectly
  • Interaction with alcohol
    • Drinking alcohol while taking Flagyl (metronidazole)
See more detailed risks and warnings
  • Yellowing of teeth
    • Age 8 or younger
    • Women in their last half of pregnancy
    • Infants
    • Using Solodyn (minocycline) for a long period of time
  • Decreased effectiveness of oral birth control pills
    • Using oral birth control pills
  • New infection
    • Using Solodyn (minocycline) for a long period of time
  • Sunburn
  • Harm to fetus (unborn baby)
    • Women who can potentially or want to become pregnant
    • Pregnant women
See more detailed risks and warnings