Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Get emergency help immediately if any of the following symptoms of overdose occur :
Change in consciousness; chest pain or discomfort; convulsions (seizures); decreased awareness or responsiveness; difficulty in breathing; dizziness or fainting; lack of muscle tone; lightheadedness; loss of consciousness; pinpointed pupils of the eyes; severe sleepiness; shortness of breath; slow or irregular heartbeat; unusual tiredness
Also, check with your doctor as soon as possible if any of the following side effects occur:
Less common or rare
Abdominal fullness; abnormal or decreased touch sensation; blisters under the skin; bloating; blood in urine; blood pressure increased; blurred vision; chest pain or discomfort; change in walking and balance; chills; convulsions (seizures); darkened urine; difficult urination; dizziness or lightheadedness when getting up from a lying or sitting position; fainting; fast heartbeat; frequent urge to urinate; gaseous abdominal pain; heart rate increased; indigestion; irregular heartbeat; loss of memory; numbness and tingling of face, fingers, or toes; numbness, tingling, pain, or weakness in hands or feet; pain in arms, legs, or lower back, especially pain in calves and/or heels upon exertion; pain or discomfort in arms, jaw, back or neck; pains in stomach, side, or abdomen, possibly radiating to the back; pale bluish-colored or cold hands or feet; recurrent fever; seeing, hearing, or feeling things that are not there; severe cramping; severe nausea; severe redness, swelling, and itching of the skin; shortness of breath; sweats; trembling and shaking of hands or feet; trouble performing routine tasks; weak or absent pulses in legs; yellow eyes or skin
Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome:
Abdominal or stomach pain; agitation; anxiety; constipation; cough; diarrhea; discouragement; dizziness; drowsiness; dry mouth; feeling of warmth; feeling sad or empty; feeling unusually cold; fever; general feeling of discomfort or illness; headache; heartburn; itching of the skin; irritability; joint pain; loss of appetite; loss of interest or pleasure; loss of strength or weakness; muscle aches and pains; nausea; nervousness; redness of the face, neck, arms and occasionally, upper chest; restlessness; runny nose; shivering; skin rash; sleepiness or unusual drowsiness; sore throat; stuffy nose; sweating; tiredness; trouble concentrating; unusual feeling of excitement; unusual tiredness or weakness; vomiting; weakness
Less common or rare
Abnormal dreams; appetite decreased; back pain; bladder pain; blistering, crusting, irritation, itching, or reddening of skin; bloody or cloudy urine; body aches or pain; change in hearing; clamminess; cold flu-like symptoms; confusion; cough producing mucus; cracked, dry, scaly skin; decreased interest in sexual intercourse; difficult, burning, or painful urination; difficulty breathing; difficulty in moving; disturbance in attention; ear congestion; ear drainage; earache or pain in ear; excessive gas; fall; false or unusual sense of well-being; feeling hot; feeling jittery; flushing or redness of the skin; general feeling of bodily discomfort; goosebumps; headache, severe and throbbing; hoarseness; hot flashes; inability to have or keep an erection; itching, pain, redness, swelling, tenderness, warmth on skin; joint sprain; joint stiffness; joint swelling; loss in sexual ability, desire, drive, or performance; loss of voice; lower back or side pain; muscle aching or cramping; muscle injury; muscle pain or stiffness; muscle spasms or twitching; nasal congestion; neck pain; night sweats; pain; pain in limb; pain or tenderness around eyes and cheekbones; pain, swelling, or redness in joints; skin discoloration; swelling; swelling of hands, ankles, feet, or lower legs; tightness of chest; trouble in holding or releasing urine; troubled breathing; trouble in sleeping; weight increased or decreased
After you stop using this medicine, your body may need time to adjust. The length of time this takes depends on the amount of medicine you were using and how long you used it. During this period of time check with your doctor if you notice any of the following side effects:
Anxiety; body aches; diarrhea; fast heartbeat; fever, runny nose, or sneezing; gooseflesh; high blood pressure; increased sweating; increased yawning; loss of appetite; nausea or vomiting; nervousness, restlessness or irritability; shivering or trembling; stomach cramps; trouble in sleeping; unusually large pupils; weakness
Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.