1 What is Tenex?

Brand: Tenex

Generic: Guanfacine

Tenex is a drug used in the treatment of hypertension. This drug is available as a 1 mg or 2 mg tablet.

You should read the product information leaflet before using this medication. If you have any questions, ask your doctor or pharmacist.

This medication should be taken by mouth as instructed by your doctor. Do not crush or chew the drug because it may diminish its effects. This medication should be taken with a full glass of water unless your doctor tells you otherwise. You should swallow the drug whole.

Your dosage is based on your medical condition and the way you will respond to treatment. Take this drug regularly to experience the most benefits. You should also take this drug at the same time each day.

If you miss a dose, use it as soon as you remember. Continue to use it as prescribed by your doctor or as stated on the package label.

Tenex may interact with medications such as:

  • Valproic acid
  • Azole antifungals like:
    • Ketoconazole
  • Rifamycins like:
    • Rifampin
  • Alcohol
  • Antihistamines such as:
  • Drugs for sleep or anxiety such as:
    • Alprazolam
    • Diazepam
    • or Zolpidem
  • Muscle relaxants
  • Narcotic pain relievers such as:
    • Codeine

Side Effects: There are no side effects known aside from a possible allergic reaction in people who have previous or unknown hypersensitivity to the drug.

Watch out for signs of allergic reactions such as:

  • Rash
  • Itching
  • Swelling

Before taking this medication, tell your doctor or pharmacist if you have the following:

  • Allergy to guanfacine
  • Kidney disease
  • Liver disease
  • Pregnancy or lactation
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