febuxostat

Rare

Arm, back, or jaw pain

black, tarry stools

bloody nose

blurred vision

chest pain or discomfort

chills

cloudy urine

confusion

cough

dark urine

decreased frequency or amount of urine

diarrhea

difficult or labored breathing

difficulty with moving

dizziness

dry mouth

fainting

fast, irregular, pounding, or racing heartbeat or pulse

feeling of fullness

fever

gaseous abdominal or stomach pain

general feeling of tiredness and weakness

headache

heavier menstrual periods

inability to speak

increase in heart rate

increased thirst

itching, skin rash

joint pain, stiffness, or swelling

large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or genitals

lightheadedness

loss of appetite

loss of bladder control

muscle aching or cramping

nausea

nervousness

pain, swelling, or redness in the joints

painful or difficult urination

pale skin

pinpoint red spots on the skin

pounding in the ears

rapid breathing

redness of the skin

right upper abdominal or stomach pain and fullness

runny nose

seizures

severe or sudden headache

shivering

slow or fast heartbeat

slurred speech

sore throat

sores, ulcers, or white spots on the lips or in the mouth

stomach fullness or pain

sunken eyes

sweating

swelling

temporary blindness

thirst

tightness in the chest

trouble sleeping

trouble swallowing

unusual bleeding or bruising

unusual tiredness or weakness

vomiting

vomiting of blood or material that looks like coffee grounds

weakness in the arm or leg on one side of the body, sudden and severe

weight gain

wrinkled skin

yellow eyes and skin

Incidence not known

Blistering, peeling, or loosening of the skin

diarrhea

difficulty with swallowing

hives

hoarseness

lower back or side pain

muscle cramps or spasms

puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue

red skin lesions, often with a purple center

red, irritated eyes

Rare

Anxiety

bad, unusual, or unpleasant (after) taste

blistering, crusting, irritation, itching, or reddening of the skin

body aches or pain

breast pain

bruising

burning feeling in the chest or stomach

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

change in taste

changes in hair color

constipation

continuing ringing or buzzing or other unexplained noise in the ears

cough producing mucus

cracked, dry, or scaly skin

decrease in smell

decreased interest in sexual intercourse

deep or fast breathing with dizziness

depression

ear congestion

excess air or gas in the stomach or bowels

feeling of constant movement of self or surroundings

fruit-like breath odor

gum pain

hair loss or thinning of the hair

hearing loss

heartburn

inability to have or keep an erection

inability to move the arms and legs

increased or decreased appetite

increased sensitivity of the skin to sunlight

increased sweating

increased urination

irritability

large, flat, blue, or purplish patches in the skin

loss in sexual ability, desire, drive, or performance

loss of consciousness

loss of voice

muscle or bone pain or stiffness

muscle spasm, tightness, or weakness

muscle twitching

nasal congestion

numbness of the feet, hands, and around the mouth

painful blisters on the trunk of the body

pains in the stomach, side, or abdomen, possibly radiating to the back

sensation of spinning

severe or continuing stomach pain

severe sunburn

shakiness in the legs, arms, hands, or feet

skin rash, encrusted, scaly, and oozing

sleepiness or unusual drowsiness

small red or purple spots on the skin

sneezing

stomach discomfort, upset, or pain

sudden numbness and weakness in the arms and legs

sweating

swelling of the breasts or breast soreness in both females and males

throat irritation

trembling or shaking of the hands or feet

trouble sleeping

unexplained weight loss

unusual drowsiness, dullness, or feeling of sluggishness

weight loss

Incidence not known

Aggressive thoughts

false beliefs that cannot be changed by facts

seeing, hearing, or feeling things that are not there