Along with its needing effects, a drug may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
The following side effects may mean that a serious allergy is occurring. Check with your family doctor or get emergency help immediately if they occur, especially if few of them occur at the same time.
Less common or rare
Bluish discoloration or flushing or redness of skin - occurring together with other effects listed in this section; coughing, shortness of breath, troubled breathing, tightness in chest, or wheezing; difficulty in swallowing; dizziness or feeling faint - severe; hive-like swellings - large on eyelids, face, lips, or tongue; skin rash, itching, or hives; stuffy nose - occurring together with other effects listed in this section
Also check with your family doctor immediately if any of the following side effects occur, especially if few of them occur together:
Rare
Bleeding or crusting sores on lips; chest pain; fever with or without chills; red, thickened, or scaly skin; sores, ulcers, or white spots in mouth - painful; sore throat - unexplained; tenderness, burning, or peeling of skin
Symptoms of overdose
Anxiety, confusion, excitement, irritability, nervousness, restlessness, or trouble in sleeping - severe, especially with products containing caffeine; cold, clammy skin; convulsions - seizures; diarrhea - severe or continuing; dizziness, lightheadedness, drowsiness, or weakness - severe; frequent urination - for products containing caffeine; hallucinations - seeing, hearing, or feeling things that are not there; increased sensitivity to touch or pain - for products containing caffeine; increased thirst; low blood pressure; muscle trembling or twitching - for products containing caffeine; nausea or vomiting - severe or continuing, sometimes with blood; pinpoint pupils of eyes; ringing or buzzing in ears - continuing or hearing loss; seeing flashes of "zig-zag'" lights - for products containing caffeine; slow, fast, or irregular heartbeat; slow, fast, irregular, or troubled breathing; slurred speech; staggering; stomach pain - severe; uncontrollable flapping movements of the hands - especially in elderly diseaseds; unusual movements of the eyes; vision problems
Always check with your family doctor as soon as possible if any of the following side effects was happen
Less common or rare
Bloody or black, tarry stools; bloody urine; confusion or mental depression; pinpoint red spots on skin; skin rash, hives, or itching - without other signs of an allergy to aspirin listed above; sore throat and fever; stomach pain - severe; swollen or painful glands; trembling or uncontrolled muscle movements; unusual bleeding or bruising; unusual excitement - mild; unusual tiredness or weakness - mild
More common side effects may occur that usually do not need medical attention. These side effects may go away during treat as your body adjusts to the drug. However, check with your family doctor if any of the following side effects continue or are bothersome:
More common
Bloated or "gassy'" feeling; dizziness, lightheadedness, or drowsiness - mild; heartburn or indigestion; nausea, vomiting, or stomach pain - occurring without other symptoms of overdose
More common side effects not listed above may also occur in some diseaseds. If you notice any other problems, check with your family doctor.