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Doxycycline is a broad-spectrum antibiotic synthetically derived from oxytetracycline and is available as doxycycline monohydrate; doxycycline hyclate; doxycycline hydrochloride hemiethanolate hemihydrate; and doxycycline calcium for oral administration.

BRAND NAMES: Asidoxyn; Azudoxat; Bactidox; Banndoclin; Basedillin; Bassado; Biocolyn; Biodoxi; Bronmycin; Cendox; Cloran; Cyclidox; Dagracycline; Deoxymykoin; Doinmycin; Doryx; Dosil; Dotur; Doxaciclin; Doxalin; Doxat; Doximed; Doximycin; Doxin; Doxine; Doxi-Sergo; Doxt; Doxy; Doxy-1; Doxy-100; Doxychel; Doxyclin; Doxycline; Doxycycline; Doxycycline Hyclate; Doxycycline Monohydrate; Doxylag; Doxylin; Doxymycin; Dumoxin; Duracyclin; Esdoxin; Gewacyclin; Granudoxy; Ibimycin; Idocyklin; Interdoxin; Lexcycline; Lydox; Magdrin; Medomycin; Miraclin; Monocin; Monodox; Paldomycin; Probracin; Radox; Remycin; Roximycin; Servidoxyne; Siadocin; Siclidon; Sigadoxin; Supracyclin; Tenutan; Tetradox; Texomycin; Tolexine; Torymycin; Tsurupioxin; Unidox; Unidoxy; Vibrabiotic; Vibradox; Vibracina; Vibramicina; Vibramycin; Vibramycin Calcium; Vibramycin Hyclate; Vibramycin Monohydrate; Vibramycin-N; Vibramycine; Vibra-S; Vibra-Tabs; Vibraveineuse; Vibravends; Vibravenos; Vibravenos SF; Viradoxyl-N; Vivocycline; Wanmycin; Withamycin; Xidox; Zadorin
(Foreign brand names outside U.S. in italics)

When not to take doxycycline

Do not take doxycycline on an empty stomach, it may cause a stomach upset.

Doxycycline interferes with the formation of the teeth in children (it colours them), so expectant and nursing mothers must not take doxycycline.

Children cannot take doxycycline before their adult teeth have come out. Once they have formed and have grown, the risk disappears.

Do not take doxycycline if you are going to be exposed to strong sunlight, such as on the beach or ski-ing. Doxycycline increases the sensitivity of the skin to the sun's rays. If you must take doxycycline, because no other treatment is available, be sure to protect yourself from the sun.

There has been anedoctal evidence (this means that it does not come from a well controlled clinical study, but from isolated cases) that after prolonged use of 10 years or more, [this must be an incredibly safe drug if patients take it 10 years or more!---proud2brc] doxycycline therapy can cause the lower lip to swell and become black and blue. After stopping doxycycline, the lip becomes normal. It is speculated that this sensitivity may be caused or aggravated by exposure to sunlight.

Proud, I have a 4 year old. Wouldn't it be better to risk the teeth being stained than to watch her die? Her 9 year old brother and 7 year old sister do not have all their adult teeth in. I'll ask my doc for a 'script. Who knows. Maybe he'll cooperate, though I think he thinks I'm one of those weird conspiracy-minded rightwingers. (Why would he think that?)

The only thing that worries me in this rush to take antibiotics 24/7 is that we'll end up turning our bodies into breeding grounds for stronger and stronger antibiotic-resistant bugs. The Russians used to sell penacillin on the street corner, and that screwed a lot of the world over....

I have an allergy to doxy and cipro. What would you reccommend?

Also, my doc informed me that prolonged antibiotic therepy actually decreases the drugs ability to fight infection. In some cases, patients can form a sort of resistance to antibiotic therepy.