Rybix Side Effects

Interactions with Medications

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:

Less common or rare

Abdominal or stomach fullness

abnormal or decreased touch sensation

blisters under the skin


blood in the urine

blood pressure increased

blurred vision

change in walking and balance

chest pain or discomfort


convulsions (seizures)

darkened urine

difficult urination

dizziness or lightheadedness when getting up from a lying or sitting position


fast heartbeat

frequent urge to urinate

gaseous abdominal or stomach pain

heart rate increased


irregular heartbeat

loss of memory

numbness and tingling of the face, fingers, or toes

numbness, tingling, pain, or weakness in the hands or feet

pain in the arms, legs, or lower back, especially pain in the calves or heels upon exertion

pain or discomfort in the arms, jaw, back, or neck

pains in the 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


trembling and shaking of the hands or feet

trouble performing routine tasks

weak or absent pulses in the legs

yellow eyes or skin

Get emergency help immediately if any of the following symptoms of overdose occur:

Symptoms of overdose

Change in consciousness

decreased awareness or responsiveness

difficulty with breathing

lack of muscle tone


loss of consciousness

pinpointed pupils of the eyes

severe sleepiness

shortness of breath

slow or irregular heartbeat

unusual tiredness

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

Abdominal or stomach pain








dry mouth

feeling of warmth

feeling sad or empty

feeling unusually cold


general feeling of discomfort or illness




itching of the skin

joint pain

loss of appetite

loss of interest or pleasure

loss of strength or weakness

muscle aches and pains



redness of the face, neck, arms, and occasionally, upper chest


runny nose


skin rash

sleepiness or unusual drowsiness

sore throat

stuffy nose



trouble concentrating

unusual feeling of excitement


Less common or rare

Abnormal dreams

appetite decreased

back pain

bladder pain

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

bloody or cloudy urine

body aches or pain

change in hearing


cold flu-like symptoms


cough producing mucus

cracked, dry, or scaly skin

decreased interest in sexual intercourse

difficult, burning, or painful urination

difficulty with moving

disturbance in attention

ear congestion

ear drainage

earache or pain in ear

excessive gas


false or unusual sense of well-being

feeling hot

feeling jittery

flushing or redness of the skin

general feeling of bodily discomfort


headache, severe and throbbing


hot flashes

inability to have or keep an erection

itching, pain, redness, swelling, tenderness, or warmth on the 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 in the limbs

pain or tenderness around the eyes and cheekbones

pain, swelling, or redness in the joints

skin discoloration


swelling of the hands, ankles, feet, or lower legs

tightness of the chest

trouble in holding or releasing urine

trouble with sleeping

troubled breathing

weight increased or decreased

After you stop using this medicine, it may still produce some side effects that need attention. During this period of time, check with your doctor immediately if you notice the following side effects:


high blood pressure

increased sweating

increased yawning

shivering or trembling

unusually large pupils

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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