How and When to use Doxycyline (Doryx, Doxylin, Efracea) - Doctor Explains

Fri, 15 Aug 2025 22:40:33 +0000

Welcome back to How To Medicate and welcome to this video on how and when to use Doxycycline. I already made several videos on different antibiotics and if you are interested you can find those in the playlist here:
https://www.youtube.com/playli....st?list=PLaG3Bo3L0gX

Generic name: Doxycycline.
Brand names: Doryx, Doxyhexal, Doxylin and Efracea.
Available as: capsules, tablets and injections.

How to use it?
Swallow the capsule whole with half a glass of water. Don’t break it and don’t chew on it. This can make Doxycyline less effective.

Duration of treatment?
Usually 1 to 3 weeks, but it can be up to several months-years.
It is important that you do not interrupt the treatment and finish it completely.

When to use it?
Doxyxycline is used for ”serious” infections caused by micro-organisms sensitive to Doxycycline.

What is the correct dosage?
Always use the dosage and frequency prescribed by your own doctor.
General guideline for adults using tablets or capsules: 200mg 1x/day or 100mg 2x/day.

Forgotten a dose?
Does it take less than 4 hours till your next dose? Than skip the dose you missed and take the forgotten dose at the end of your treatment.

What are the side-effects?
Common (1-10%): high blood pressure, headache, vaginal complaints, stomach complaints, dry mouth, tooth discolouration in children, nausea, rash.
Uncommon (0.1-1%): headache, vomiting, diarrhea.

Safety:
The usage of Doxycycline can be dangerous for people with liver and kidney complaints and for those who are hypersensitive to tetracyclines. It can also have interactions with other medication. Therefore always discuss with your doctor if Doxycycline is safe for you to use.

Pregnancy and Lactation:
The usage of Doxycycline while being pregnant or while breastfeeding can be dangerous for your unborn child. Therefore you should not use it and ask your doctor for an other antibiotic.

- Disclaimer: this video and the comments are meant purely informational! This is not medical advice! If you are looking for medical advice always contact your own doctor. -

Literature:
1: Farmacotherapeutisch Kompas. (2020). Doxycycline.
2: Apotheek.nl. (2020). Doxycycline om in te nemen.
3. Durbin K. (2020). Doxycycline.

* The images in this video are used for educational purposes only.

Music:
1. Ikson, New Day, Music promoted by Vlog No Copyright Music.
2. Jarico, Island, Music promoted by Vlog No Copyright Music.

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Books I used In Medical School:
Lehninger Principles of Biochemistry Seventh Edition, https://amzn.to/2PFGidh
Guyton and Hall Textbook of Medical Physiology 14th Edition, https://amzn.to/3inL6jM
Human Anatomy & Physiology (12th Edition), https://amzn.to/2DHlHCT
Oxford Handbook of Clinical Specialties, https://amzn.to/3fU854s
Oxford Handbook of Emergency Medicine, https://amzn.to/31LfMVg
Oxford Handbook of Clinical Medicine, https://amzn.to/3ky73hZ
Janeway's Immunobiology, https://amzn.to/3gLZW3e
Atlas of Human Anatomy (Netter Basic Science), https://amzn.to/3afFe9c
Netter's Anatomy Flash Cards, https://amzn.to/2XSAMIN
The House of God, S. Shem, https://amzn.to/31I7HAU

Gear I use:
Camera: Canon EOS M50: https://amzn.to/33SNMSn
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