Your Comparison Guide of Minocycline vs Doxycycline

Share This Post

Minocycline and Doxycycline are both second-generation tetracycline-class antibiotics. They both are approved by the Food and Drug Administration (FDA) and have been proven effective for the treatment of acne, also known as acne vulgaris, but what else is there to know about them? Here are some of the main similarities and differences between minocycline and doxycycline. 

How are Minocycline and Doxycycline Similar?

As previously mentioned, minocycline and doxycycline are both second-generation tetracycline antibiotics. This means they are both slightly modified versions of the naturally occurring parent chemical. Interestingly, both are extremely well-absorbed by the body and have similar elimination half-lives, an indication of how long it takes the body to process and remove the drug after it is taken or administered. 

You can get either product in tablet and capsule form, though the cost can vary depending on the strength and type of dose

Additionally, the absorption of both doxycycline and minocycline can be affected by taking them at the same time as dairy products, vitamins, or antacids, all of which contain divalent or trivalent cations, positive ions with a charge of 2 or 3. 

Minocycline and doxycycline share many of the same side effects, mostly localized to the digestive tract; namely nausea, diarrhea, loose stool, vomiting, and photosensitive, or extra sensitive to sunlight. It should also be noted that both can interfere with the effectiveness of birth control pills too. Pregnant women or women who are breastfeeding are also advised against taking both drugs unless instructed by a physician.    

Both medications have a similar spectrum of bacteria they are effective at treating, including gram-negative and gram-positive bacteria, as well as bacteria that cause some rarer bacterial infections like those that cause lung or respiratory tract infections, sexually transmitted infections, plague, anthrax, and bacteria that are commonly transmitted from infected soil and animals. 

Acne

Doxycycline and minocycline show similar efficacy with no significant difference in treating moderate to severe acne in patients that are usually dosed twice daily, and share some side effects which we listed above. 

Angiogenesis

While they use slightly different mechanisms to inhibit angiogenesis or the creation of new blood vessels, both medications are effective at inhibition, assisting with some cardiovascular conditions and having implications for cancer and tumor growth. 

Pain

While they are not equally effective across all types of pain sensation, both doxycycline and minocycline are effective at reducing and treating pain from a variety of causes. 

How are Minocycline and Doxycycline Different?

Minocycline and doxycycline differ in many ways, but the easiest way to consider them is to look at the unique advantages of each. Below are examples of the advantages noted for each specific medication. 

What Advantages Does Minocycline Have?

Antioxidant

Minocycline is 10 times more potent than doxycycline as an antioxidant, or free radical scavenger. As a result, it is more effective at preventing oxidative damage, especially in the case of nerves and brain tissue. 

MRSA and other resistant bacteria

Minocycline has been proven to be more effective than doxycycline in treating methicillin-resistant staph. aureus, or MRSA, infections. While doxycycline can successfully inhibit infection growth and spreading, it is not usually successful at clearing the infection. Minocycline, however, successfully clears the infection quickly. 

Minocycline is also more effective at treating vancomycin-resistant enterococcus (VRE) and Acinetobacter species. 

Lipophilic

Minocycline is also slightly more lipophilic than doxycycline. This means that it distributes better into the tissue, as opposed to a hydrophilic medication, which would distribute better into fluids like blood. Because it has better tissue penetration, minocycline is a better treatment option for some infection types based on their location. 

Similarly, because of its lipophilicity, minocycline also is able to cross the blood-brain barrier, which allows for some of the neuroprotective effects seen on the brain, spinal cord, and nerves. This also makes it a better candidate to treat infections in the central nervous system, as it can get where it is needed.  

What Advantages Does Doxycycline Have?

Age

Unlike minocycline, doxycycline does not bind strongly to calcium or discolor teeth, skin, and other tissue. It also has a milder side effect profile. For this reason, doxycycline is not only approved for use in children, but also comes in a kid-friendly liquid, or reconstitutable, formulation. 

Anti-inflammatory

Between the two drugs, doxycycline is the more potent anti-inflammatory agent over minocycline. This is due to both the mechanism of how doxycycline addresses inflammation, as well as the fact that inflammation is typically higher accompanied by fluid retention, which allows for greater concentrations of the more hydrophilic doxycycline molecules. 

Pain

While both medications have some pain-alleviating properties, doxycycline performs better at pain treatment and prevention, and often at lower doses than those needed with minocycline. 

Side Effects

First, despite being prescribed an average of 3 times more often than minocycline, doxycycline is 5.5 times less likely to cause adverse effects. This may be partially due to the fact that doxycycline prescriptions are shorter, on average, than minocycline prescriptions; there simply may not have been enough time for side effects to develop. However, this most likely can be tied to the fact that doxycycline has a much smaller side effect profile than minocycline. 

In fact, the most common side effects in people taking doxycycline are in the digestive tract, and most can be minimized by taking it with a meal (there are some food restrictions). Minocycline, however, is known to also cause digestive tract side effects, in addition to potentially irreversible skin discoloration, dizziness and lightheadedness, and some auto-immune related conditions. 

Like all antibiotics, both minocycline and doxycycline require a prescription from a health care provider in the United States. For more information about either medication or how the two compare, take a look at these articles or consult with a health care provider. 

References and Sources

Carris NW, Pardo J, Montero J, Shaeer KM. Minocycline as A Substitute for Doxycycline in Targeted Scenarios: A Systematic Review. Open Forum Infectious Diseases.     2015;2(4)doi:10.1093/ofid/ofv178

Cunha BA, Baron J, Cunha CB. Similarities and differences between doxycycline and minocycline: clinical and antimicrobial stewardship considerations. European Journal of     Clinical Microbiology & Infectious Diseases. 2018/01/01 2018;37(1):15-20. doi:10.1007/s10096-017-3081-x

Gaillard T, Briolant S, Madamet M, Pradines B. The end of a dogma: the safety of doxycycline use in young children for malaria treatment. Malaria journal. 2017;16(1):148-148.     doi:10.1186/s12936-017-1797-9

Kircik LH. Doxycycline and minocycline for the management of acne: a review of efficacy and safety with emphasis on clinical implications. Journal of drugs in dermatology : JDD.     2010/11// 2010;9(11):1407-1411.

Leite LM, Carvalho AGG, Tavares Ferreira PLF, et al. Anti-inflammatory properties of Doxycycline and Minocycline in experimental models: an in vivo and in vitro     comparative study. Inflammopharmacology. 2011/04/01 2011;19(2):99-110. doi:10.1007/s10787-011-0077-5

Maibach H. Second-generation tetracyclines, a dermatologic overview: clinical uses and pharmacology. Cutis. Nov 1991;48(5):411-7.

Saivin S, Houin G. Clinical Pharmacokinetics of Doxycycline and Minocycline. Clinical Pharmacokinetics. 1988/12/01 1988;15(6):355-366. doi:10.2165/00003088-198815060-    00001

Sapadin AN, Fleischmajer R. Tetracyclines: nonantibiotic properties and their clinical implications. J Am Acad Dermatol. Feb 2006;54(2):258-65.     doi:10.1016/j.jaad.2005.10.004

Smith K, Leyden JJ. Safety of doxycycline and minocycline: A systematic review. Clinical Therapeutics. 2005/09/01/ 2005;27(9):1329-1342.     doi:https://doi.org/10.1016/j.clinthera.2005.09.005

Sesame Care

Find the best price for great doctors and specialists

  • Thousands of doctors and specialists
  • $13,000,000+ saved by patients
  • 95% patient satisfaction
  • 4.3 on TrustPilot
     

Popular Destinations

Recent Articles

Share On:

Subscribe To Our Newsletter

Get updates and learn from the best

More To Explore

Stress Acne: Causes, Prevention, and Treatment

Stress. It's a powerful emotion that can wreak havoc on your body. One way that stress can appear is on your skin in the

Cystic Acne: What Is It, And How Do You Treat It?

Cystic acne is a type of acne that causes cysts to form deep in the skin. These cysts are often painful and may take

A Guide to Anti Aging Cream for Men

It is frequently said that men are like fine wine – they get better with age. And while in general, men may seem to

Is Clindamycin Right for You as an Acne Treatment?

Clindamycin is an antibiotic that was first developed in 1966. It treats bacterial infections as well as acne, also called acne vulgaris. There are

Fordyce Spots, A Mystery Revealed

Fordyce spots, also called Fordyce granules, are small yellowish-white bumps that appear on the shaft of the penis, labia majora or labia minora, scrotum,

Clearing Up Butt Acne: Treatment, Prevention and More

Red bumps that appear like acne on the buttocks can occur in both men and women and is a common skin condition. Continue reading

How Much Does Accutane Cost?

What is Accutane | Used to Treat | How Does it Work | Cost | Side Effects If you’re one of the 50 million Americans who experiences acne annually, you’re no stranger

How to Diagnose and Treat Tinea Versicolor

Tinea versicolor is a common skin infection that causes red, scaly patches on the chest, back, or neck. You may also see flaky white

10 Best Ways to Help Prevent and Remove Blackheads

Blackheads develop when sebum from oil glands gets trapped in hair follicles or pores. Bacteria build up after time, so removing blackheads is important

What Is Minocycline?

Minocycline is a second-generation antibiotic in the tetracycline class of antibiotics. Second-generation, in this case, means that it is a semi-synthetic compound; first-generation tetracyclines are naturally

What is Accutane?

What is Accutane and can it really be used to treat acne? Read our latest blog for more details!

The Difference Between Tretinoin, Retinol, and Retinoids

Topical treatments like tretinoin, retinol, and retinoids for acne and wrinkles can be a little confusing to understand what each one is and what

What is Melasma and How Do You Treat It?

Melasma, sometimes referred to as chloasma, is a skin disorder characterized by darker spots on the skin. The patches can vary in color

A Comprehensive Guide to Minocycline for Acne

If you suffer from acne, there is a targeted medication for treating acne–minocycline. Minocycline is a prescription drug used to treat infections by preventing

Tretinoin Strengths and How They Work With Acne

Tretinoin is a topical medication that is used for the treatment of acne, also called acne vulgaris, and the most common brand in the

How to Get Rid of Hyperpigmentation

Hyperpigmentation, or dark spots on the skin, can be tricky to get rid of. If you are dealing with this condition, you are not

How to Deal with Blood Blisters

Blood blisters are a medical condition where fluid-filled bubbles grow out of blood vessels in the skin. They form under the skin and can

Geologie Review: Does This Personalized Men’s Skincare Work?

Geologie offers personalized skin care products tailored to each male customer they have. The personal touch is certainly nice, but do their products really

Understanding Melasma Treatments

Melasma is a skin conition that is characterized by hyperpigmented spots on the skin. Melasma is sometimes referred to as chloasma. The spots are most

Everyday Tips for Anti-Aging Skin Care

With so many anti-aging products available on the market, it is overwhelming to find which products actually work and are worth spending money on