University of texas medical branch symptoms and conditions

Known Side Effects of Doxycycline: (source: drugs.com)

•severe headache, dizziness, blurred vision;
•fever, chills, body aches, flu symptoms;
•severe blistering, peeling, and red skin rash;
•urinating less than usual or not at all;
•pale or yellowed skin, dark colored urine, fever, confusion or weakness;
•severe pain in your upper stomach spreading to your back, nausea and vomiting, fast heart rate;
•loss of appetite, jaundice (yellowing of the skin or eyes); or
•easy bruising or bleeding, unusual weakness.

Less serious side effects may include:
•swollen tongue, trouble swallowing;
•mild nausea, vomiting, diarrhea, or stomach upset;
•white patches or sores inside your mouth or on your lips;
•sores or swelling in your rectal or genital area; or
•vaginal itching or discharge.

Comparative Research Results:
SOURCE: http://www.ncbi.nlm.nih.gov/pubmed/3684731 -- Department of Psychiatry and Behavioral Sciences, University of Texas Medical Branch, Galveston 77550

“Results from both monitoring methods consistently indicated at least a 3-fold higher frequency of nausea or vomiting with doxycycline relative to the other antibiotics. Complaints of skin rash also were at least 4 times more frequent with doxycycline, depending on the particular sample.”

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There are all sorts of verified reported side effects, most of which were on the packing slip that came with my prescription. However, not all side effects are listed on the insert. I’ve come across depression and anxiety listed as side effects on other drug profiles for Doxycycline, so if they are among the symptoms you're experiencing, they very well may be due to the drug. My experience has served as a greaet reminder to research any pharmaceutical I put in my body so that I may make informed decisions.

Like many of you, apart from my current breakout from Doxy, I too experienced stomach upset, and, to a lesser degree, cranial pressure.

Be well. Cheers.