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Generic name: belladonna alkaloids and phenobarbital [BEL-a-DON-a-AL-ka-loids-and-FEEN-oh-BAR-bi-tal]
The brand names are: Donnatal, Phenobarbital with Belladonna Alkaloids, Phenohytro, and D-Tal.

What is Phenohytro?

Phenohytro is composed of alkaloids from belladonna (atropine, hyoscyamine, and scopolamine) and phenobarbital. Phenohytro can be described as a combination medication that is used to treat IBS and ulcers of the intestine. Phenohytro can also be employed for other purposes that are not covered in this guideline for medication.

Side effects of Phenohytro

Seek medical attention immediately when you are experiencing symptoms or warning signs of a reaction (hives, breathing difficulties, or swelling of your throat or face) or an extreme skin reaction (fever and burning eyes, sore throat or skin pain, or an ailment that is purple or red and blisters and peels).

This medicine could trigger severe adverse consequences. Take this medicine off and contact your doctor immediately if you experience:

  • Heartbeats that are fast or rapid
  • Blurred vision blurred vision, tunnel vision, eye pain, or seeing halos of light sources;
  • Diarrhea (especially when you suffer from a colonostomy or an ileostomy);
  • Less the amount of sweating and dry or hot skin
  • Urination that is painful or difficult
  • Loss of coordination, speech slurred, fainting;
  • The confusion, agitation, and depression suicidal thoughts, depression;
  • Sore throat, fever, or
  • Pale skin, easily bruising, unusual fatigue, cold hands and feet;

The effects of side effects like sleepiness and agitation, as well as nervousness and even excitement, are most likely to be experienced by older adults.

Common adverse consequences of phenohytro could be:

  • Constipation;
  • Reduced sweating or urination
  • Dizziness, drowsiness, weakness;
  • Blurred vision
  • Experiencing nervousness or excitement;
  • dry mouth the nose, mouth, or throat;
  • Dry skin or
  • nausea, vomiting, and bloating.

This isn't a complete list of all the side effects. Other effects may also be present. Contact your doctor to seek medical advice on the effects. You can report any adverse reactions to the FDA at 1-800-FDA-1088.


Phenohytro could be a drug that can cause dependence. Misuse can result in dependence, overdose, or even death.

Prior to use this drug

This medicine is used if you have an allergy to hyoscyamine, atropine, scopolamine, or phenobarbital. Also, you should not take this medicine if you suffer from:

  • Bladder obstruction, enlarged prostate, or other urological issues;
  • An upset stomach or obstruction of the bowel (including paralytic ileus);
  • Chronic constipation or loss of functioning of the bowel (especially for older adults or those who are sick or handicapped);
  • Serious ulcerative colitis or toxic megacolon
  • Glaucoma;
  • Acid reflux disease that is associated with a hiatal hernia;
  • Active bleeding with rapid beating heartbeats lowers blood pressure, shortness of breath, and feet or hands;
  • Porphyria (a genetic disorder of enzymes that results in symptoms that affect the nervous system or skin);
  • An allergy to primidone; or
  • A disorder of the muscles is called myasthenia. Gravis is a condition of the muscles.

Speak to your doctor if you were ever diagnosed with:

  • Ulcerative colitis, or stomach ulcer;
  • A colostomy or ileostomy;
  • A nerve-muscle disorder;
  • Heart conditions, high blood pressure;
  • gallbladder diseases;
  • addiction to alcohol or drugs;
  • Breathing issues;
  • A thyroid disorder; or
  • Kidney or liver disease.

Phenohytro could harm an unborn child, but the advantages of treating your illness with this medication could outweigh the risks. Speak to your doctor about whether you are pregnant or not. This medicine may make birth pills for controlling birth less efficient. Talk to your doctor about an alternative to hormonal birth control (condom diaphragm, diaphragm containing spermicide) to avoid pregnancy.

It might not be safe to breastfeed while taking this medication. Talk to your doctor about any potential risks. This medication can reduce the production of breast milk. Don't give the medicine to children without the guidance of a physician.

How to take Phenohytro?

Follow all instructions on the prescription label and also read all medication guides or instructions sheets. Make sure you use the medication precisely as prescribed. Phenohytro includes phenobarbital, which is an anti-inflammatory drug that could cause dependence. Intoxication can result in addiction or overdose. It can also cause death. Keep the medication in a location where other people aren't able to access it. The selling or distribution of this medication is against the law.

Suck this tablet with extended release in its entirety, but do not crush, chew, or break it. Take care when measuring liquid medicines. Make use of the dosing syringe supplied or a dosage-measuring device (not an ordinary spoon).

Consult your physician if symptoms don't improve or if they become worse. This medication can alter the results of certain tests. Be sure to inform any doctor treating patients that you're using Phenohytro.

Keep at room temperature, free of heat, moisture, and light. Make sure you keep track of your medication. You must be aware if you are using the medicine improperly or without a prescription. Don't stop taking this medication suddenly following the duration of use, or you could experience uncomfortable withdrawal symptoms. Discuss with your physician how you can completely stop taking this medication.

What happens if I miss the dose?

You should take the medication as quickly as you are able, but do not take any missed doses if it's nearing the time to take the next dose. Don't have two doses at one time.

What happens if I overdose?

Get medical attention in an emergency or contact the poison help line at 1-800-222-1222.

The symptoms of an overdose can be headaches, dizziness, nausea, dry mouth, blurred vision, dry or hot skin, trouble swallowing, and feeling agitated or excited.

What should be avoided?

Phenohytro can cause drowsiness and blurred vision and could affect your reaction time. Avoid driving and other hazardous activities until you understand the effects this medication will have on your vision.

Consuming alcohol while taking this medication could cause an increase in side effects.

Beware of becoming dehydrated or overheated during workouts and hot temperatures. This medication can reduce sweating and make you more vulnerable to suffering from heat stroke.

Interaction with other drugs

Combining this medication with other medications that slow your breathing may cause serious negative side effects. Ask your doctor prior to taking opioids, sleeping pills, a muscle relaxer, or medicine to treat anxiety or seizures.

If you are taking an antidepressant, be sure to ensure that you take it at least 3 hours prior to or 3 hours after taking Phenohytro.

If you stop or begin taking Phenohytro, the doctor might require adjustments to the dosages of any other medication you use on a regular basis. Inform your doctor of any other medicines you are taking, particularly:

  • Potassium supplements;
  • Primidone;
  • John's wort;
  • antibiotic or antifungal medication;
  • Heart or blood pressure medication;
  • Antiviral medicine for treating hepatitis and hiv/aids and
  • Blood thinner (such as warfarin, coumadin, or jantoven).

This list isn't complete. Other medications could influence Phenohytro, such as prescription and over-the-counter medicines, vitamins, and herbal products. Some interactions with drugs are not listed here. are listed here.