Donnatal Coupons & Cost Discounts

Dizziness, drowsiness, weakness, blurred vision, dry eyes, dry mouth, nausea, constipation, and abdominal bloating may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. To relieve dry mouth, suck (sugarless) hard candy or ice chips, chew (sugarless) gum, drink water, or use a saliva substitute. To relieve dry eyes, consult your pharmacist for artificial tears or other eye lubricants. To prevent constipation, eat dietary fiber, drink enough water, and exercise. You may also need to take a laxative. Ask your pharmacist which type of laxative is right for you. Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: decreased sweating, dry/hot/flushed skin, fast/irregular heartbeat, loss of coordination, trouble speaking, fainting, mental/mood changes (such as confusion, agitation, unusual excitement, depression, rare thoughts of suicide), difficulty urinating, decreased sexual ability, signs of anemia (such as unusual tiredness, pale skin), easy bruising/bleeding. Get medical help right away if you have any very serious side effects, including: eye pain/swelling/redness, vision changes (such as seeing rainbows around lights at night), slow/shallow breathing. A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: fever, swollen lymph nodes, rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Some products that may interact with this drug include: darunavir, potassium tablets/capsules, sodium oxybate, drugs that are affected by slowed gut movement (such as pramlintide). This medication may affect the absorption of other products such as griseofulvin, certain azole anti-fungal drugs (ketoconazole, itraconazole), slowly dissolving forms of digoxin, among others. Other medications can affect the removal of phenobarbital from your body, which may affect how this product works. Examples include St. John's wort, among others. Phenobarbital can speed up the removal of other medications from your body, which may affect how they work. Examples of affected drugs include artemether/lumefantrine, asunaprevir, atazanavir, cobicistat, etravirine, lurasidone, ranolazine, rilpivirine, sofosbuvir, sorafenib, voriconazole, certain calcium channel blockers (such as felodipine/nimodipine), among others. This medication may decrease the effectiveness of hormonal birth control such as pills, patch, or ring. This could cause pregnancy. Discuss with your doctor or pharmacist if you should use reliable backup birth control methods while using this medication. Also tell your doctor if you have any new spotting or breakthrough bleeding, because these may be signs that your birth control is not working well. The risk of serious side effects (such as slow/shallow breathing, severe drowsiness/dizziness) may be increased if this medication is taken with other products that may also cause drowsiness or breathing problems. Tell your doctor or pharmacist if you are taking other products such as opioid pain or cough relievers (such as codeine, hydrocodone), alcohol, marijuana (cannabis), other drugs for sleep or anxiety (such as alprazolam, lorazepam, zolpidem), muscle relaxants (such as carisoprodol, cyclobenzaprine), or antihistamines (such as cetirizine, diphenhydramine). Check the labels on all your medicines (such as allergy or cough-and-cold products, diet aids) because they may contain ingredients that cause drowsiness or a fast heartbeat. Ask your pharmacist about using those products safely. Phenobarbital is very similar to primidone. Do not use medications containing primidone while using phenobarbital. This medication may interfere with certain lab tests (such as gastric secretion tests), possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug.