Hi Kikki, I happened to see your post about your daughter. I went to Drugs.com & looked up the side effects of Doxy. Weight gain is listed as a common side effect. However, in their section of rare side effects bloating is listed & it said the dr should be contacted immediately. I suggest you go to that site & read about this. If this were my child I would stop the doxy. Some antibiotics are known for not only destroying the bad bacteria but the good bacteria the stomach needs. I would go to my local pharmacy & discuss with the pharmacist a good probiotic for your daughter. There are many available OTC, but because of her age you should talk to a pharmacist. She may need to be on one for awhile to get her stomach back in shape. By the way, most people take it at bedtime.
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