Type your drug name (like Atorvastatin, Sildenafil, etc)
Pegasys Coupon - Pegasys 4 syringes of 180mcg/0.5ml kit
Specialty Drug
PEGINTERFERON ALFA-2a is a man-made drug that acts like a protein made by the body. It is used to treat chronic hepatitis B and C infections. Compare interferon alphas.
Prescription Settings
4 syringes of 180mcg/0.5ml
1 kit
Pegasys Coupon - Pegasys 4 syringes of 180mcg/0.5ml kit
4 syringes of 180mcg/0.5ml
1 kit

Pegasys Side Effects

What should I watch for?

Visit your doctor or health care professional for regular checks on your progress. You will need regular blood checks.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.


Common and Rare Side Effects

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.

Check with your doctor immediately if any of the following side effects occur:

More common

Black, tarry stools




feeling sad or empty



lack of appetite

loss of interest or pleasure

lower back or side pain

painful or difficult urination

pale skin

sore throat


trouble sleeping

trouble concentrating

ulcers, sores, or white spots in the mouth

unusual bleeding or bruising

unusual tiredness or weakness

Less common

Bone pain

chest pain or discomfort



depressed mood


dry skin and hair


fast heartbeat

feeling cold

hair loss


heart murmur


hoarseness or husky voice


muscle cramps and stiffness

pale skin

rapid, shallow breathing

slowed heartbeat


stomach pain

tightness in the chest

troubled breathing with exertion

weight gain

Incidence not known

Accumulation of pus in the arms or legs

blistering, peeling, loosening of the skin

decreased urination


dry mouth

increase in heart rate


joint or muscle pain

red, irritated eyes

red skin lesions, often with a purple center


sunken eyes

swollen, red, tender area of infection in the arms or legs


wrinkled skin

Some 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. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Back pain

cracked, dry, scaly skin

crusting, irritation, itching, or reddening of the skin


feeling unusually cold, shivering

hair loss or thinning of the hair

muscle or joint pain















Less common


blurred vision



memory problems

stomach discomfort or upset

Incidence not known

Change of hearing

loss of hearing

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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