Do not use this medication if you are pregnant or trying to get pregnant. Taking Doxycycline while pregnant could harm unborn babies and/or cause permanent discoloration of their teeth later in life.
Doxycycline might lessen the effectiveness of birth control pills. If you are a woman and on birth control pills, speak to your doctor before taking Doxycycline and consider using non-hormonal birth control means such as condoms, spermicide, etc. to avoid unwanted pregnancies.
You should not take Doxycycline if you have allergies to this medication or other tetracycline antibiotics (e.g. Declomycin, Dynacin, Minocin, Solodyn, Vectrin, etc.), or others. To be absolutely sure it is safe for you to take Doxycycline, tell your doctor if you have any of the following conditions:
- Asthma or sulfite allergy
- Liver disease
- Kidney disease
Children under 8 years old should not be taking Doxycycline as they may develop permanent discoloration of teeth as a result.