Doxycycline vs Minocycline for Acne: What the Sources Say

Quick answer: Doxycycline and minocycline are two different tetracycline-class antibiotics, and the American Academy of Dermatology lists both among the three antibiotics the FDA has approved for acne. The 2024 AAD guideline gives oral doxycycline a strong recommendation and oral minocycline a conditional one. A Cochrane review found no evidence that minocycline is better than other commonly used acne treatments. The same review said the evidence suggests minocycline is associated with more severe adverse effects than doxycycline. We found no source that shows one pill clears more acne than the other. Which drug fits, if either, is a decision for your prescriber.

Is doxycycline the same as minocycline?

No, they are separate drugs in the same family. MedlinePlus describes doxycycline as a member of a class of medications called tetracycline antibiotics. The minocycline extended-release tablet label calls minocycline a tetracycline-class drug. Because they share a class, they share many warnings. These include sun sensitivity and a link to pressure inside the skull. The Doryx MPC label names tooth discoloration with use in the last half of pregnancy, infancy and childhood to age 8. The minocycline label names the second and third trimesters, infancy and childhood up to age 8.

The AAD says acne isn’t an infection, but an antibiotic can provide real relief from deep, painful breakouts. Certain antibiotics such as doxycycline and erythromycin can reduce the amount of P. acnes bacteria on your skin and lessen inflammation. MedlinePlus says doxycycline works to treat acne by killing the bacteria that infect pores and by lowering the amount of oil on your skin that can cause acne.

Which forms you are prescribed also matters. The FDA label we read for minocycline covers an extended-release tablet made for acne. The doxycycline label we read covers Doryx MPC, a delayed-release tablet. We did not read immediate-release labels for either drug.

Which is better for acne, doxycycline or minocycline?

No source we found shows one clears acne better than the other.

The 2024 AAD acne guideline makes a strong recommendation for oral doxycycline. It makes a conditional recommendation for oral minocycline. That conditional recommendation does not say minocycline fails to work.

A Cochrane review of minocycline for acne included 39 randomized trials with 6,013 participants. Its authors wrote that minocycline was shown to be an effective treatment for moderate to moderately-severe acne vulgaris. They also wrote that there was no evidence that it is better than any of the other commonly used acne treatments. The same review noted that the trials were generally small and poor quality, and that no evidence guides what dose to use.

We did not find a head-to-head acne trial of the two drugs in the sources we checked, so we can’t tell you which clears more skin. If a website claims one is stronger, ask which trial supports that claim.

What does the label say about the kind of acne each one treats?

The minocycline extended-release label we read gives a narrow indication. It says the tablets are indicated to treat inflammatory lesions of non-nodular moderate to severe acne vulgaris in patients 12 and older. It also says the tablets did not demonstrate any effect on non-inflammatory acne lesions.

The Doryx MPC label is shorter on acne. It lists acne under adjunctive therapy and says that in severe acne it may be useful adjunctive therapy. The AAD says an oral antibiotic can effectively treat moderate-to-severe pimples but not nodular acne. The AAD says dermatologists also include another medication, like benzoyl peroxide, in an acne treatment plan.

How do the side effects of doxycycline and minocycline differ?

Both drugs carry the usual tetracycline-class warnings. The differences sit in what each label emphasizes, and in how the two compare in reviews.

A Cochrane review said the evidence suggests minocycline is associated with more severe adverse effects than doxycycline. It reported that minocycline, but not other tetracyclines, is associated with lupus erythematosus, but the risk is small: 8.8 cases per 100,000 person-years. It also said the risk of autoimmune reactions rises with duration of use. The review found the evidence does not support the idea that the more expensive extended-release form is safer than standard minocycline.

A 2005 systematic review of safety compared reports to the FDA’s MedWatch program with new prescriptions dispensed from January 1998 to August 2003. It calculated event rates of 13 per million for doxycycline and 72 per million for minocycline, based on FDA data. It called the incidence of side effects with either drug very low. The first author’s affiliation is Warner Chilcott Laboratories. The authors called the data preliminary and said more head-to-head clinical trials are needed. The authors said these preliminary data from separate reports suggest the possibility that side effects may be less likely with doxycycline than minocycline.

Which one is more likely to cause dizziness?

The minocycline label says light-headedness, dizziness or vertigo have been reported with minocycline therapy. In the label’s acne trials, dizziness was reported by 59 of 674 people on the extended-release tablets (9%) against 17 of 364 on placebo (5%). The label tells patients who have these symptoms to be careful about driving or using hazardous machinery. It adds that the symptoms may disappear during therapy and usually disappear rapidly after the drug is stopped.

We found no dizziness figure for doxycycline in the sources we read. That is not a promise you won’t feel dizzy on it. It means we have no number to compare.

What about stomach and throat irritation?

The Doryx MPC label says to administer it with an adequate amount of fluid to wash down the drug and reduce the risk of esophageal irritation and ulceration. If gastric irritation occurs, the label says it may be given with food or milk. MedlinePlus lists nausea, vomiting and diarrhea among the common side effects of doxycycline. Our doxycycline side effects article goes into more detail.

The minocycline label says to swallow the extended-release tablets whole, without chewing, crushing or splitting them. It adds that taking them with food may help reduce the risk of esophageal irritation and ulceration.

Which one makes you more sensitive to the sun?

Neither label separates the two drugs on this point. The Doryx MPC label says an exaggerated sunburn reaction has been observed in some people taking tetracyclines, and its highlights say to limit sun exposure. The minocycline label says the same reaction has been seen with tetracyclines, including minocycline. It advises patients to minimize or avoid natural or artificial sunlight, such as tanning beds, and to use sunscreen products and protective apparel when exposure cannot be avoided.

MedlinePlus tells doxycycline users to avoid unnecessary or prolonged sunlight and to wear protective clothing, sunglasses and sunscreen. Follow the sun warning on the exact product you are given. Our skincare routine on acne medication article covers daily skin care during treatment.

Do doxycycline and minocycline change skin color?

Minocycline’s label has a full section on this. It says tetracycline-class antibiotics are known to cause hyperpigmentation. The label lists many possible sites, including nails, bone, skin, eyes, thyroid, visceral tissue and the oral cavity. It says skin and oral pigmentation has been reported independently of time or amount of drug, while pigmentation in other tissues has been reported with prolonged use. Skin pigmentation can be diffuse or can appear over scars or injury sites.

The Cochrane review’s background also named potentially irreversible pigmentation among the safety concerns. MedlinePlus lists changes in color of skin, scars, nails, eyes or related sites among the common side effects of doxycycline. Because the label puts this in a class warning, we can’t say one drug causes it more.

Dark marks left by old pimples are a separate issue. On its page about dark spots in darker skin tones, the AAD says most dark spots will then fade on their own, but it may take a long time. Color that lies deep in the skin can take years to fade. Tell your prescriber about a new change in skin color rather than assuming it is an acne mark.

What do the two drugs have in common on safety?

• Isotretinoin: the Doryx MPC label says to avoid concomitant use of isotretinoin because isotretinoin is also known to cause pseudotumor cerebri. The minocycline label says the same, naming idiopathic intracranial hypertension. Our doxycycline vs Accutane article covers that choice.
• Pressure in the skull: both the Doryx MPC label and the minocycline label describe headache, blurred vision, diplopia and vision loss as signs of intracranial hypertension. The minocycline label says to discontinue if symptoms occur, and says permanent visual loss may exist even after the medication is discontinued.
• Teeth: the Doryx MPC and minocycline labels both warn of permanent yellow-gray-brown tooth discoloration with use during tooth development. The doxycycline label names the last half of pregnancy, infancy and childhood to age 8. The minocycline label names the second and third trimesters, infancy and childhood up to age 8.
• Antacids and iron: the Doryx MPC and minocycline labels both say absorption is impaired by antacids containing aluminum, calcium, or magnesium and by iron-containing preparations. The doxycycline label also names bismuth subsalicylate.

The minocycline label says anaphylaxis, serious skin reactions and DRESS syndrome have been reported postmarketing with minocycline use in patients with acne. It also lists serious liver injury, and says long-term use for acne has been associated with drug-induced lupus-like syndrome, autoimmune hepatitis and vasculitis. The label says to discontinue the tablets if liver injury is suspected.

If you use birth control pills, patches, rings or injections, MedlinePlus says doxycycline may make them less effective, so you would need another method of contraception. We did not read a matching line for minocycline, so ask your prescriber or pharmacist about the exact product you are given. The Doryx MPC label says tetracycline-class drugs can cause fetal harm when given to a pregnant woman, but data for doxycycline are limited. The minocycline label says these drugs may cause permanent discoloration of deciduous teeth and reversible inhibition of bone growth in the second and third trimesters. Tell your prescriber if you are pregnant or planning a pregnancy.

How do the dosing and length of treatment compare?

Your prescriber sets the dose for your case. The sources we read give an uneven picture, so here is what each one says.

For the minocycline extended-release tablets, the label recommends a dose of approximately 1 mg/kg once daily for 12 weeks. It adds that higher dosages have not shown additional benefit for inflammatory acne lesions and may be associated with more acute vestibular adverse reactions. The Doryx MPC label we read has no acne dose. A 2015 trial enrolled 662 subjects aged 12 years or older with moderate to severe acne. They received subantimicrobial modified-release doxycycline 40 mg, doxycycline 100 mg or placebo once daily for 16 weeks. The two doses were comparable for inflammatory lesions, and the 40 mg form had fewer drug-related side effects. A trial is not a dosing guide.

On length, the AAD says dermatologists prescribe an antibiotic for the shortest time possible, which usually means three to four months. Some people need more time on an antibiotic. The AAD also warns that an antibiotic taken alone can quickly lose its ability to fight acne and lead to antibiotic resistance. That is why it says you may need benzoyl peroxide or adapalene gel along with it. Both the minocycline label and the Doryx MPC label carry a warning about drug-resistant bacteria.

On timing, the AAD says it takes at least 6 to 8 weeks before you start to see fewer breakouts from an acne treatment plan. Our doxycycline for acne article goes deeper on timing and on how doxycycline is taken.

What are the alternatives if doxycycline isn’t working?

The AAD says some patients need a different antibiotic, and others need a different type of treatment. The AAD treat page also lists sarecycline among the three antibiotics the FDA has approved for acne.

The 2024 guideline gives strong recommendations to benzoyl peroxide and topical retinoids, and it lists combining systemic antibiotics with topical therapies as a good practice statement. Our acne treatment comparison sets out the main options side by side. For a prescription-strength retinoid versus oral isotretinoin, see Accutane vs tretinoin.

The guideline strongly recommends oral isotretinoin for acne that is severe, causing psychosocial burden or scarring, or failing standard oral or topical therapy. The Doryx MPC label says to avoid concomitant use of isotretinoin because it is also known to cause pseudotumor cerebri. The minocycline label says the same for idiopathic intracranial hypertension.

Common questions about doxycycline vs minocycline

Is minocycline stronger than doxycycline for acne? We found no source that ranks one as stronger for clearing acne. The Cochrane review found no evidence that minocycline is better than other commonly used acne treatments. The 2024 guideline gives oral doxycycline a strong recommendation and oral minocycline a conditional one.

Which of the two has more side effects? The Cochrane review says the evidence suggests minocycline is associated with more severe adverse effects than doxycycline. The minocycline label reports dizziness in 59 of 674 people on the 1 mg/kg dose (9%) against 17 of 364 on placebo (5%). We found no dizziness figure for doxycycline, so this is not a comparison of the two drugs.

Can you take either one with isotretinoin? No, the labels advise against it. The Doryx MPC label says to avoid concomitant use of isotretinoin because it is also known to cause pseudotumor cerebri. The minocycline label says to avoid concomitant use because isotretinoin is also known to cause idiopathic intracranial hypertension.

How long do you take them for acne? The AAD says dermatologists prescribe an antibiotic for the shortest time possible, usually three to four months, and some people need longer. The minocycline extended-release label recommends approximately 1 mg/kg once daily for 12 weeks.

Do both make you sun sensitive? Yes, the Doryx MPC and minocycline labels both describe an exaggerated sunburn reaction in some people taking tetracyclines. The Doryx MPC highlights say to limit sun exposure, and the minocycline label says to minimize or avoid sunlight and use sunscreen products and protective apparel.

What should you do next about your treatment?

Bring three things to your prescriber: the list of everything you take, any history of dizziness, headaches or vision changes, and your sun exposure. Ask which form you are getting, how long the course should run and what replaces it. MedlinePlus says to call your doctor immediately for headache, blurred vision, double vision or loss of vision.

If you’d like a board-certified dermatologist to look at your case, take the quiz, which takes about two minutes, and upload a front photo and a side photo. A board-certified dermatologist reviews your case within 24 hours, and a prescription is never guaranteed. You can read how the process works in our how it works FAQ. If you also wonder about alcohol, see can you drink alcohol on doxycycline.

This article is general information, not medical advice. A prescription is never guaranteed, and treatment decisions stay with the board-certified dermatologist who reviews your case. Accutane® is a registered trademark of its respective owner, and isotretinoin is the generic name. Doryx® is a registered trademark of its respective owner. The Goal Is Clear is operated by BNG Health Services, LLC, which is not the prescribing physician; board-certified dermatologists prescribe.

Sources

• Reynolds et al., Guidelines of care for the management of acne vulgaris, J Am Acad Dermatol 2024
• Garner et al., Minocycline for acne vulgaris: efficacy and safety, Cochrane Database Syst Rev 2012
• Smith and Leyden, Safety of doxycycline and minocycline: a systematic review, Clin Ther 2005
• Moore et al., Modified-release doxycycline 40 mg vs doxycycline 100 mg vs placebo for inflammatory acne, J Drugs Dermatol 2015
• American Academy of Dermatology, Acne: Diagnosis and treatment
• American Academy of Dermatology, How long can I take an antibiotic to treat my acne?
• American Academy of Dermatology, How to fade dark spots in darker skin tones
• Minocycline hydrochloride extended-release tablets prescribing information, DailyMed
• Doryx MPC (doxycycline hyclate) prescribing information, DailyMed
• MedlinePlus, Doxycycline