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Tenex contains the active ingredient guanfacine hydrochloride, which is a centrally acting antihypertensive with α-adrenoceptor agonist properties. It is available in tablet form for oral administration in 1 mg and 2 mg strengths. Inactive ingredients include anhydrous lactose, microcrystalline cellulose, pregelatinized starch, and stearic acid.
How should I use this medication?
Take this medication by mouth. Take it as directed on the prescription label at the same time every day. You can take it with or without food. If it upsets your stomach, take it with food. Keep taking it unless your care team tells you to stop. Talk to your care team about the use of this medication in children. While it may be prescribed for children as young as 12 for selected conditions, precautions do apply.
Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once. NOTE: This medicine is only for you. Do not share this medicine with others.
What if I miss a dose?
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.
Where should I keep my medication?
Keep out of the reach of children and pets. Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Throw away any unused medication after the expiration date.
NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.
What side effects may I notice from receiving this medication?
Side effects that you should report to your care team as soon as possible: -Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome): -Change in sex drive or performance -Constipation -Dizziness -Drowsiness -Dry mouth
This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What should I tell my care team before I take this medication?
They need to know if you have any of these conditions: -Heart disease or recent heart attack -History of stroke -Kidney disease -Liver disease -An unusual or allergic reaction to guanfacine, other medications, foods, dyes, or preservatives -Pregnant or trying to get pregnant -Breast-feeding
What may interact with this medication?
This medication may interact with the following: -Certain medications for blood pressure, heart disease, irregular heart beat -Certain medications for depression, anxiety, or psychotic disturbances -Certain medications for seizures like carbamazepine, phenobarbital, phenytoin -Certain medications for sleep -Ketoconazole -Narcotic medications for pain -Rifampin
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
What should I watch for while using this medication?
Visit your care team for regular checks on your progress. Check your heart rate and blood pressure regularly while you are taking this medication. Ask your care team what your heart rate should be and when you should contact them. You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medication affects you. To avoid dizzy or fainting spells, do not stand or sit up quickly, especially if you are an older person. Alcohol can make you more drowsy and dizzy. Avoid alcoholic drinks. Avoid becoming dehydrated or overheated while taking this medication. Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your care team if the problem does not go away or is severe. Do not treat yourself for coughs, colds or allergies without asking your care team for advice. Some ingredients can increase your blood pressure.
Source: This information is sourced from Elsevier Inc.
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Prescription medications affect individuals differently, and what works for one person may not work for another. Always consult your doctor, pharmacist, or other qualified healthcare provider to ensure the information displayed applies to your personal circumstances. Only a licensed healthcare provider can advise you on what is safe and effective for you.
Keep all medications out of the reach of children, never share your medicine with others, and use each medication only as prescribed. Your reliance on any information provided on this platform is at your own risk.
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