I am taking 400mg/day of Doxycycline to treat my Lyme Disease. While I normally have some post-nasal drip due to various allergies, the past few weeks have been really bad on the 'gunk factor'. On top of that, I have a sore throat a good deal of the time and I sometimes get moderately congested and sneezy. Last night I thought that I had the beginnings of a cold. This morning I feel a little better as far as the sneezing and congestion go.
Also, in the last few weeks I have been getting headaches while I am sleeping. I usually wake up an hour or so before the alarm goes off. Lately, I've woken to a moderate headache. I've been taking acetaminophen and then going back to bed to sleep until the alarm goes off. The headache has been either less annoying or gone when I wake.
I have an appointment with my doctor on Tuesday for a B-12 injection. I plan on mentioning these annoyances to him at that time. I have been on the Doxycycline for just over two weeks now. While I didn't expect to see any improvement to my Lyme symptoms yet, I wasn't expecting these particular side effects. It's not enough to want me to give up the antibiotic. I just want to make sure that these are possible side effects and not something else going on.