Phentermine and Botox drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Phentermine (phentermine hydrochloride) and Botox (botulinum toxin type a). Common drug interactions include nausea among females.

The phase IV clinical study analyzes what interactions people have when they take Phentermine and Botox. It is created by eHealthMe based on reports of 39 people who take the same drugs from the FDA, and is updated regularly.

What is Phentermine?

Phentermine has active ingredients of phentermine hydrochloride. It is often used in weight loss. eHealthMe is studying from 19,870 Phentermine users. Check the latest studies of Phentermine.

What is Botox?

Botox has active ingredients of botulinum toxin type a. It is often used in migraine. eHealthMe is studying from 70,513 Botox users. Check the latest studies of Botox.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Aug, 30, 2026

39 people who take Phentermine and Botox together, and have interactions are studied.

Phentermine and Botox drug interactions.

What are the common drug interactions of Phentermine and Botox, by gender? *:

female:

Nausea (feeling of having an urge to vomit)
Drug ineffective
Surgery
Urinary tract infection
Abdominal pain upper
Anxiety
Concussion (short loss of normal brain function in response to a head injury)
Dysphagia (a condition in which swallowing is difficult or painful)
Feeling drunk
Hypoaesthesia (reduced sense of touch or sensation)

male:

n/a

What are the common drug interactions of Phentermine and Botox, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Injection site bruising
Trigeminal neuralgia (a painful condition of the nerve responsible for most facial sensation)

30-39:

Diverticulum (out pouching of a hollow (or a fluid-filled) structure in the body)
Dry skin
Dysphagia (a condition in which swallowing is difficult or painful)
Hypoaesthesia (reduced sense of touch or sensation)
Injection site haemorrhage (bleeding from injection site)
Lipase decreased
Multiple sclerosis relapse (reoccurrence of a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath)
Muscular weakness (muscle weakness)
Nasal oedema (fluid collection in nose)
Pain

40-49:

Drug ineffective
Depression
Insomnia (sleeplessness)
Abdominal pain upper
Concussion (short loss of normal brain function in response to a head injury)
Feeling drunk
Nausea (feeling of having an urge to vomit)
Tachycardia (a heart rate that exceeds the range of 100 beats/min)
Vitamin d deficiency
Vomiting

50-59:

Alopecia (absence of hair from areas of the body)
Amaurosis fugax (painless transient monocular visual loss)
Anxiety
Blood albumin decreased
Blood potassium decreased
Burning sensation
Cerebrovascular accident (sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture)
Chest pain
Chills (felling of cold)
Chronic kidney disease

60+:

Muscle mass
Myalgia (muscle pain)

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 10 people, 25.64%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 8 people, 20.51%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 8 people, 20.51%
Pain: 6 people, 15.38%
Nausea (feeling of having an urge to vomit): 6 people, 15.38%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 5 people, 12.82%
Skin Wrinkling (wrinkle on skin): 5 people, 12.82%
Muscle Spasms (muscle contraction): 5 people, 12.82%
Weight Decreased: 4 people, 10.26%
Asthma: 4 people, 10.26%

* Approximation only. Some reports may have incomplete information.

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