Specialty Drug


Promacta is part of the Thrombopoiesis Stimulating Agents class and treats Chronic ITP and Hepatitis C. Thrombopoiesis stimulating agents are used to stop bleeding to treat chronic ITP and hepatitis C. They work by increasing blood platelet count. Promacta is only available as a brand name drug. Compare thrombopoiesis stimulating agents.

Promacta Side Effects

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

Bloating or swelling of the face, arms, hands, lower legs, or feet

body aches or pain

chills or fever


difficulty with breathing


loss of voice

pale skin

rapid weight gain

runny nose

sore throat

tingling of the hands or feet

troubled breathing with exertion

unusual tiredness or weakness

unusual weight gain or loss

yellow eyes or skin

Less common

Bladder pain


blurred or decreased vision


burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings


general feeling of discomfort or illness


joint pain

lower back or side pain

muscle aches and pains


pinpoint red spots on the skin

redness of the eye



tender, swollen glands in the neck

trouble sleeping

trouble swallowing

voice changes


Incidence not known

Chest pain

pain, redness, or swelling in the legs or arms

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

Decreased appetite

difficulty with moving

hair loss or thinning of the hair

itching skin

lack or loss of strength

muscle aching or cramping

muscle pains or stiffness

swollen joints

Less common

Acid or sour stomach

back pain


bone pain

dry mouth




stomach discomfort, upset, or pain

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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