Does doxycycline hyclate make you feel sick? is that a common side effect?

Side effects of doxycycline include: Diarrhea, Difficulty swallowing, Drug rash, Esophagitis, Facial redness, Headache, Hives, Small intestine & colon inflammation (enterocolitis), Loss of appetite, Low blood sugar, Low levels of white blood cells or platelets, Skin hyperpigmentation, Skin peeling (exfoliative dermatitis), Tongue swelling, Tooth discoloration, Upper abdominal pain.

Any medication , or any Antibiotic may upset stomach of some people. If its important to take Doxycycline as best antibiotic for your condition , try to survive the short term course, otherwise discuss with your Doctor for other choices that may agree better with you.