Alstonia Bark (FEVER BARK) Overview Information
Fever bark is the bark of the Alstonia tree. People use it to make medicine.
Despite serious safety concerns, fever bark is used for fever, high blood pressure, diarrhea, joint and muscle pain (rheumatism), and malaria. It is also used as a stimulant.
How does it work?
Fever bark contains chemicals that can lower blood pressure.
Alstonia Bark (FEVER BARK) Side Effects & Safety
Fever bark seems to be UNSAFE. It contains chemicals that can cause side effects such as stuffy nose, irritability, allergic reactions, eye problems, kidney problems, depression, and psychotic reactions. Large doses can cause heart problems and death.
Special Precautions & Warnings:Pregnancy and breast-feeding: Fever bark seems to be UNSAFE. Avoid using it. It might harm you and your baby.
Depression: Some of the chemicals in fever bark might make depression worse.
Stomach ulcers: Some of the chemicals in fever bark might make stomach ulcers worse.
Schizophrenia: Some of the chemicals in fever bark might cause a psychotic episode.
Surgery: Fever bark acts like a stimulant. There is some concern that it might interfere with surgery by increasing heart rate and blood pressure. Stop using fever bark at least 2 weeks before a scheduled surgery.
Major Interaction Do not take this combination
- Medications used during surgery (Anesthesia) interacts with FEVER BARK
Fever bark contains a chemical called reserpine. Taking reserpine along with medications used for surgery can cause heart problems. Be sure to tell your doctor what natural products you are taking before having surgery. You should stop taking fever bark at least two weeks before surgery.
- Naloxone (Narcan) interacts with FEVER BARK
Fever bark contains a chemical that can affect the brain. This chemical is called yohimbine. Naloxone also affects the brain. Taking naloxone with yohimbine might increase the chance of side effects such as anxiety, nervousness, trembling, and hot flashes.
Moderate Interaction Be cautious with this combination
- Phenothiazines interacts with FEVER BARK
Fever bark contains a chemical called yohimbine. Some phenothiazines have effects similar to yohimbine. Taking fever bark and phenothiazines together might increase the effects and side effects of yohimbine.
Some phenothiazines include chlorpromazine (Thorazine), fluphenazine (Prolixin), trifluoperazine (Stelazine), thioridazine (Mellaril), and others.
- Stimulant drugs interacts with FEVER BARK
Stimulant drugs speed up the nervous system. By speeding up the nervous system, stimulant medications can make you feel jittery and speed up your heartbeat. Fever bark might also speed up the nervous system. Taking fever bark along with stimulant drugs might cause serious problems including increased heart rate and high blood pressure. Avoid taking stimulant drugs along with fever bark.
Some stimulant drugs include diethylpropion (Tenuate), epinephrine, phentermine (Ionamin), pseudoephedrine (Sudafed), and many others.
Alstonia Bark (FEVER BARK) Dosing
The appropriate dose of fever bark depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for fever bark. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.