PRECAUTIONS: Before using this drug, tell your doctor your entire medical history, including: any allergies (especially drug allergies), liver disease, brain/spinal disorders (e.g., seizures or severe blood vessel disease), heart disease (including irregular heart beats), lung disease. Use of this medication for prolonged or repeated periods may result in a secondary infection (e.g., oral, bladder or vaginal yeast infection). This medication increases sensitivity to the sun. Avoid prolonged sun exposure. Wear protective clothing and use a sunscreen when outdoors. Limit alcohol intake, as it may worsen certain side effects of this medication. Since this drug may cause dizziness, use caution if operating machinery or performing hazardous tasks (e.g., driving). To avoid dizziness or lightheadedness when rising from a seated or lying position, get up slowly. This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor. This drug is excreted into breast milk. Because of the potential risk to the infant, breast-feeding while using this drug is not recommended. Consult your doctor before breast- feeding. Elderly patients may be more sensitive to the effects of this drug therefore caution is advised.

DRUG INTERACTIONS: Tell your doctor of all nonprescription and prescription medication you may use, especially: blood pressure medications (e.g., prazosin), other antibiotics (especially quinolone-type). Avoid drinking large amounts of beverages containing caffeine (coffee, tea, colas) or eating large amounts of chocolate. This drug may increase and/or prolong the effects of caffeine. Also, certain cough/cold products (with "adrenaline-like" medicine such as decongestants), isoniazid and cholinesterase blockers such as tacrine and donepezil might increase the chance of seizures. Other medicines or IV additives should not be combined with this drug, or given through the same IV. Certain IV fluids (e.g., normal saline or lactated ringers) should not be used with this drug. Consult your pharmacist. Do not start or stop any medicine without doctor or pharmacist approval.

OVERDOSE: If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly.