Rybix 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:

Less common

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


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


irregular heartbeat

loss of memory

numbness and tingling of the face, fingers, or toes

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

stomach fullness


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

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







dry mouth

feeling of warmth

feeling sad or empty

feeling unusually cold


general feeling of discomfort or illness




itching or skin rash

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


sleepiness or unusual drowsiness

sore throat

stomach pain

stuffy nose



trouble concentrating

unusual feeling of excitement


Less common

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 the ear

excessive gas


false or unusual sense of well-being

feeling hot

feeling jittery

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, stiffness, or 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, stiffness, 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

weight increased or decreased

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.

GoodRx is not sponsored by or affiliated with any of the pharmacies identified in its price comparisons. All trademarks, brands, logos and copyright images are property of their respective owners and rights holders and are used solely to represent the products of these rights holders. This information is for informational purposes only and is not meant to be a substitute for professional medical advice, diagnosis or treatment. GoodRx is not offering advice, recommending or endorsing any specific prescription drug, pharmacy or other information on the site. GoodRx provides no warranty for any of the pricing data or other information. Please seek medical advice before starting, changing or terminating any medical treatment.
In all states except Tennessee, GoodRx is considered a marketer of prescription discount cards, and is not required to register as a discount card provider. In Tennessee, GoodRx is registered as a Prescription Drug Discount Plan Operator.
Safe Pharmacy
The information contained in the Truven Health Micromedex products as delivered by GoodRx is intended as an educational aid only. It is not intended as medical advice for individual conditions or treatment. It is not a substitute for a medical exam, nor does it replace the need for services provided by medical professionals. Talk to your doctor, nurse or pharmacist before taking any prescription or over the counter drugs (including any herbal medicines or supplements) or following any treatment or regimen. Only your doctor, nurse, or pharmacist can provide you with advice on what is safe and effective for you.
The use of the Truven Health products is at your sole risk. These products are provided "AS IS" and "as available" for use, without warranties of any kind, either express or implied. Truven Health and GoodRx make no representation or warranty as to the accuracy, reliability, timeliness, usefulness or completeness of any of the information contained in the products. Additionally, TRUVEN HEALTH MAKES NO REPRESENTATION OR WARRANTIES AS TO THE OPINIONS OR OTHER SERVICE OR DATA YOU MAY ACCESS, DOWNLOAD OR USE AS A RESULT OF USE OF THE THOMSON REUTERS HEALTHCARE PRODUCTS. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE OR USE ARE HEREBY EXCLUDED. Truven Health does not assume any responsibility or risk for your use of the Truven Health products.