Doxycycline Monohydrate 100mg

Generic For: Monodox

Doxycycline monohydrate 100mg (brand name Monodox) is a tetracycline-class antibiotic capsule used to treat a wide range of bacterial infections, including acne, respiratory tract infections, and certain sexually transmitted infections. It works by stopping the growth of susceptible bacteria. After review of your information by a licensed provider, your prescription ships from a licensed U.S. pharmacy.

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Buy Doxycycline Monohydrate 100mg Online (Monodox)

A tetracycline antibiotic for bacterial infections including acne, respiratory infections, and chlamydia

Doxycycline Monohydrate 100mg Quick Facts

Drug classTetracycline antibiotic
TreatsBacterial infections, acne, respiratory infections, chlamydia
FormCapsule
Typical dosingTake 2 capsules by mouth daily
Prescription requiredYes — prescription only

What Is Doxycycline Monohydrate 100mg?

Doxycycline monohydrate is the monohydrate salt form of doxycycline, a broad-spectrum tetracycline antibiotic. It is prescribed for many bacterial infections, including respiratory tract infections, skin infections, severe acne, certain sexually transmitted infections, and tick-borne illnesses such as Rocky Mountain spotted fever. It can also be used to prevent malaria in travelers. Doxycycline monohydrate 100mg capsules are the generic equivalent of the brand Monodox and require a prescription in the United States.

What Does Doxycycline Monohydrate 100mg Treat?

Respiratory tract infections (e.g., community-acquired pneumonia)
Severe acne (adjunctive therapy)
Chlamydia and other sexually transmitted infections
Skin and soft tissue infections
Rickettsial infections (e.g., Rocky Mountain spotted fever)
Urinary tract infections caused by susceptible bacteria
Malaria prophylaxis

Doxycycline Monohydrate 100mg Dosage

100 mg by mouth every 12 hours on day 1, then 100 mg once daily
Severe infections: 100 mg by mouth every 12 hours
Duration per prescriber; take with a full glass of water

Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.

Doxycycline Monohydrate 100mg Side Effects

Common side effects

  • Nausea
  • Vomiting
  • Diarrhea
  • Loss of appetite
  • Sun sensitivity (photosensitivity)
  • Skin rash
  • Headache

Serious side effects

Stop taking this medication and seek medical attention right away if you experience:

  • Severe or persistent diarrhea (possible C. difficile infection)
  • Severe allergic reaction (swelling, difficulty breathing, hives)
  • Esophageal irritation or ulceration (painful swallowing, chest pain)
  • Severe skin reactions (blistering, peeling)
  • Increased pressure in the skull (severe headache, vision changes)
  • Signs of liver problems (yellowing of skin or eyes, dark urine)

Warnings & Interactions

Do not use if allergic to doxycycline or other tetracyclines
Avoid during pregnancy and in children under 8 (tooth discoloration, bone effects)
May reduce effectiveness of hormonal birth control; use backup contraception
Avoid prolonged sun exposure; use sunscreen
Separate from antacids, calcium, iron, and dairy by 2-3 hours
Take with plenty of water and remain upright to avoid esophageal irritation
May interact with warfarin, penicillins, and isotretinoin

Tell your prescriber about all medications, supplements, and health conditions before starting doxycycline monohydrate 100mg.

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Frequently Asked Questions

What is doxycycline monohydrate used for?

Doxycycline monohydrate is a tetracycline antibiotic used to treat bacterial infections such as respiratory infections, acne, chlamydia, skin infections, and tick-borne illnesses. It is also prescribed to help prevent malaria in travelers. It only works against bacteria, not viral illnesses like colds or flu.

Do I need a prescription for doxycycline monohydrate 100mg?

Yes. Doxycycline monohydrate is a prescription-only medication in the United States. A licensed healthcare provider must review your health information and determine it is appropriate before it can be dispensed.

How does ordering and shipping work?

After you place your order, a licensed provider reviews your information or verifies your existing prescription. Once approved, your medication is dispensed and shipped from a licensed U.S. pharmacy directly to your address.

What is the difference between doxycycline monohydrate and doxycycline hyclate?

Both contain the same active antibiotic and are generally considered clinically equivalent. The monohydrate form may be gentler on the stomach for some patients. Your prescriber or pharmacist can advise which form is right for you.

How should I take doxycycline monohydrate?

Take each dose with a full glass of water and stay upright for at least 30 minutes to avoid throat irritation. Avoid taking it at the same time as antacids, dairy, calcium, or iron supplements, which can reduce absorption. Complete the full course prescribed, even if you feel better.

Can I be in the sun while taking doxycycline monohydrate?

Doxycycline can make your skin more sensitive to sunlight, increasing the risk of sunburn. Limit sun exposure, wear protective clothing, and use sunscreen while taking this medication.

Is doxycycline monohydrate the same as Monodox?

Yes. Monodox is a brand name for doxycycline monohydrate capsules. Generic doxycycline monohydrate contains the same active ingredient in the same strength and dosage form.