Tenex

Tenex is a prescription medication used alone or with other medications to treat high blood pressure. 

Tenex belongs to a group of drugs called centrally acting alpha 2A -adrenergic receptor agonists. Tenex treats high blood pressure by decreasing heart rate and relaxing the blood vessels so that blood can flow more easily through the body.&

Tenex comes as a tablet and is usually taken once daily at bedtime.

Common side effects include dry mouth, weakness and headache. Tenex can cause drowsiness. Do not drive or operate heavy machinery until you know how this medication affects you.

Tenex is a prescription medication used alone or with other medications to treat high blood pressure. 

This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information.

Take Tenex exactly as prescribed by your doctor. Follow the directions on your prescription label carefully. Your doctor will determine the best dose for you.

The recommended dose range of Tenex is 1 mg to 2 mg per day. 

• Do not drive, operate heavy machinery, or do other dangerous activities until you know how Tenex affects you. Tenex can slow your thinking and motor skills.
• Do not drink alcohol or take other medicines that make you sleepy or dizzy while taking Tenex until you talk with your doctor. Tenex taken with alcohol or medicines that cause sleepiness or dizziness may make your sleepiness or dizziness worse.
• Tenex may cause serious side effects including low blood pressure, low heart rate, fainting, and sleepiness. Get medical help right away if you experience any of these symptoms.

The most common side effects of Tenex include:

• sedation
• drowsiness
• dry mouth
• weakness
• dizziness
• constipation
• impotence

Tell the doctor if you have any side effect that bothers you or that does not go away.

Tenex may affect the way other medicines work, and other medicines may affect how Tenex works. Especially tell your doctor if you take:

• ketoconazole 
• medicines that can affect enzyme metabolism 
• valproic acid 
• high blood pressure medicine 
• sedatives 
• benzodiazepines 
• barbiturates 
• antipsychotics

Ask your doctor or pharmacist for a list of these medicines, if you are not sure.

Tell your doctor if you are pregnant or planning to become pregnant. It is not known if Tenex will harm your unborn baby.

Tell your doctor if you are breastfeeding or planning to breastfeed. It is not known if Tenex is excreted in human breast milk or if it will harm your nursing baby.

Your doctor will check your blood pressure and heart rate while you take guanfacine.

Guanfacine extended-release tablets should be swallowed whole with a small amount of water, milk, or other liquid. 

Do not crush, chew, or break guanfacine extended-release tablets, and tell your doctor if you can not swallow these tablets whole. 

Do not take guanfacine with a high-fat meal. 

Guanfacine may cause low blood pressure and can make you feel sleepy and /or dizzy.