What are the possible side effects of Phenteral?
Get emergency medical help if you have any of these signs of an allergic reaction to Phenteral: hives; wheezing, chest tightness, trouble breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
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feeling short of breath, even with mild exertion;
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chest pain, feeling like you might pass out;
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swelling in your ankles or feet;
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pounding heartbeats or fluttering in your chest;
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confusion or irritability, unusual thoughts or behavior;
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feelings of extreme happiness or sadness; or
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dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, anxiety, chest pain, shortness of breath, uneven heartbeats, seizure).
Common Phenteral side effects may include:
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feeling restless or hyperactive;
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headache, dizziness, tremors;
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sleep problems (insomnia);
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dry mouth or an unpleasant taste in your mouth;
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diarrhea or constipation, upset stomach; or
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increased or decreased interest in sex, impotence.
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.
Side effects of Phenteral in details
Applies to Phenteral: oral capsule, oral capsule extended release, oral tablet, oral tablet disintegrating
In addition to its needed effects, some unwanted effects may be caused by Phenteral (the active ingredient contained in Phenteral). In the event that any of these side effects do occur, they may require medical attention.
Major Side Effects
You should check with your doctor immediately if any of these side effects occur when taking Phenteral:
Rare
- Seeing, hearing, or feeling things that are not there
- severe mental changes
- Chest pain
- decreased ability to exercise
- dizziness
- fainting
- fast, irregular, pounding, or racing heartbeat or pulse
- headache
- numbness or tingling in the arms or legs
- swelling of the feet or lower legs
- trembling or shaking of the legs, arms, hands, or feet
- trouble breathing
- trouble with thinking, speaking, or walking
- weakness
Minor Side Effects
Some of the side effects that can occur with Phenteral may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:
Incidence not known:
- Decreased interest in sexual intercourse
- difficulty having a bowel movement (stool)
- dry mouth
- false or unusual sense of well-being
- hives or welts
- inability to have or keep an erection
- increased in sexual ability, desire, drive, or performance
- increased interest in sexual intercourse
- itching
- loss in sexual ability, desire, drive, or performance
- redness of the skin
- skin rash
- unpleasant taste
What is the most important information I should know about Phenteral?
- Phenteral orally disintegrating tablets may cause dizziness. These effects may be worse if you take it with alcohol or certain medicines. Use Phenteral orally disintegrating tablets with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
- Do NOT take more than the recommended dose or use for longer than prescribed without checking with your doctor. Doing so may increase the risk of serious side effects.
- Primary pulmonary hypertension (PPH), a rare, frequently fatal disease of the lungs, and certain heart valve problems have been reported in patients taking Phenteral along with fenfluramine or dexfenfluramine. There have been rare cases of PPH in patients taking Phenteral orally disintegrating tablets alone. It is unknown if Phenteral orally disintegrating tablets contributes to these effects. Contact your doctor right away if you are not able to tolerate as much exercise or if you develop symptoms of PPH, such as shortness of breath, chest pain, fainting, or swelling of the legs.
- Tell your doctor or dentist that you take Phenteral orally disintegrating tablets before you receive any medical or dental care, emergency care, or surgery.
- Check with your doctor before drinking alcohol with Phenteral orally disintegrating tablets.
- This product contains tartrazine dye (FD&C Yellow No. 5). This may cause an allergic reaction in some patients. If you have ever had an allergic reaction to tartrazine, ask your pharmacist if this product has tartrazine in it.
- Use Phenteral orally disintegrating tablets with caution in the ELDERLY; they may be more sensitive to its effects.
- Phenteral orally disintegrating tablets is not recommended for use in CHILDREN younger than 17 years old; safety and effectiveness in this age group have not been confirmed.
- PREGNANCY and BREAST-FEEDING: Do not take Phenteral orally disintegrating tablets if you are pregnant. It may cause harm to the fetus. Avoid becoming pregnant while you are taking it. If you think you may be pregnant, contact your doctor right away. It is not known if Phenteral orally disintegrating tablets is found in breast milk. Do not breast-feed while taking Phenteral orally disintegrating tablets.
After you have been taking Phenteral orally disintegrating tablets for a few weeks, it may not work as well as when you began taking it. This is known at TOLERANCE. Talk with your doctor if Phenteral orally disintegrating tablets stops working well. Do not take more medicine than prescribed.
Some people who use Phenteral orally disintegrating tablets for a long time may develop a need to continue taking it. People who take high doses are also at risk. This is known as DEPENDENCE or addiction. If you stop taking Phenteral orally disintegrating tablets suddenly, you may have WITHDRAWAL symptoms. These may include extreme tiredness or mental depression.
Phenteral contraindications
Weight loss during pregnancy can harm an unborn baby, even if you are overweight. Do not use Phenteral if you are pregnant.
Do not use Phenteral if you have used an MAO inhibitor such as furazolidone (Furoxone), isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam, Zelapar), or tranylcypromine (Parnate) in the last 14 days. A dangerous drug interaction could occur, leading to serious side effects.
Taking Phenteral together with other diet medications such as fenfluramine (Phen-Fen) or dexfenfluramine (Redux) can cause a rare fatal lung disorder called pulmonary hypertension. Do not take Phenteral with any other diet medications without your doctor's advice.
Phenteral may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.
Drinking alcohol can increase certain side effects of Phenteral.
Phenteral is only part of a complete program of treatment that may also include diet, exercise, and weight control. Follow your diet, medication, and exercise routines very closely.
Phenteral may be habit-forming and should be used only by the person it was prescribed for. Never share Phenteral with another person, especially someone with a history of drug abuse or addiction. Keep track of the amount of medicine used from each new bottle. Phenteral is a drug of abuse and you should be aware if anyone is using your medicine improperly or without a prescription.
Do not stop using Phenteral suddenly, or you could have unpleasant withdrawal symptoms. Ask your doctor how to avoid withdrawal symptoms when you stop using Phenteral.
References
- DTP/NCI. "phentermine: The NCI Development Therapeutics Program (DTP) provides services and resources to the academic and private-sector research communities worldwide to facilitate the discovery and development of new cancer therapeutic agents.". https://dtp.cancer.gov/dtpstandard/s... (accessed September 17, 2018).
- European Chemicals Agency - ECHA. "Phentermine: The information provided here is aggregated from the "Notified classification and labelling" from ECHA's C&L Inventory. ". https://echa.europa.eu/information-o... (accessed September 17, 2018).
- HSDB. "PHENTERMINE". https://toxnet.nlm.nih.gov/cgi-bin/s... (accessed September 17, 2018).
Reviews
The results of a survey conducted on ndrugs.com for Phenteral are given in detail below. The results of the survey conducted are based on the impressions and views of the website users and consumers taking Phenteral. We implore you to kindly base your medical condition or therapeutic choices on the result or test conducted by a physician or licensed medical practitioners.User reports
Consumer reported side effects
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Information checked by Dr. Sachin Kumar, MD Pharmacology