Generic Name: phenylephrine (rectal) (FEN il EFF rin REK tal)
Brand Name: Anu-Med, Formulation R, Hemorid, Hemorrhoidal, Hemorrhoidal Cooling Gel, Medicone Hemorrhoidal, Preparation H Cooling Gel, Preparation H Suppositories, Prep-Hem
Medically reviewed on May 23, 2018
What is Prep-Hem rectal?
Prep-Hem is a decongestant that shrinks blood vessels. Dilated blood vessels can cause hemorrhoids.
Prep-Hem is used on the rectum to relieve itching, burning, irritation, and swelling caused by hemorrhoids.
Prep-Hem may also be used for purposes not listed in this medication guide.
Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.
Before taking this medicine
You should not use Prep-Hem if you are allergic to it Prep-Hem (often used in certain cold or allergy medicines).
Ask a doctor or pharmacist if it is safe for you to use this medicine if you have:
enlarged prostate or urination problems;
a thyroid disorder.
Ask a doctor before using this medicine if you are pregnant or breast-feeding.
Always ask a doctor before using Prep-Hem on a child. Do not give this medicine to a child younger than 2 years old.
How should I use Prep-Hem rectal?
Use exactly as directed on the label, or as prescribed by your doctor.
You may use Prep-Hem up to 4 times daily, especially after a bowel movement.
Read and carefully follow any Instructions for Use provided with your medicine. Ask your doctor or pharmacist if you do not understand these instructions.
Do not place Prep-Hem cream, gel, or ointment inside your rectum. These forms of phenylephrine rectal are for use only on the area around and just outside of your rectum.
Only the rectal suppository should be placed into the rectum.
Call your doctor if your symptoms do not improve after 7 days, or if they get worse.
Store at room temperature away from moisture and heat.
What happens if I miss a dose?
Since Prep-Hem rectal is used on an as needed basis, you are not likely to miss a dose. Do not use Prep-Hem more than 4 times per day.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
What should I avoid while taking Prep-Hem rectal?
Do not take Prep-Hem rectal suppository by mouth. It is for use only in your rectum.
Ask a doctor or pharmacist before using over-the-counter medicines that may contain ingredients similar to Prep-Hem.
Prep-Hem rectal side effects
Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using Prep-Hem and call your doctor at once if you have:
severe irritation inside or around your rectum; or
Less serious side effects are more likely, and you may have none at all.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What other drugs will affect Prep-Hem rectal?
Ask a doctor or pharmacist before using Prep-Hem with any other medications, especially:
blood pressure medication; or
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
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