Phentermine and Paracetamol

Can You Take Apple Cider Vinegar While Taking Phentermine, and How Do Other Drugs Interact With It

, reviewed by
 – Updated May 8, 2023
, reviewed by
 – Updated May 8, 2023
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Doctors prescribe Phentermine to treat obesity. Can you combine it with other drugs or foods? For example, can you take apple cider vinegar while taking Phentermine? Apple cider vinegar is considered a natural remedy for weight loss. Using it leads to a decrease in blood sugar levels, appetite, and the amount of body fat.

However, according to a study, the combined use of Phentermine and apple cider vinegar can cause a number of adverse side effects, such as:

  • Diarrhea;
  • Easy bruising;
  • Increased urination;
  • Petechiae (red or purple skin spots caused by capillaries bleeding), etc.

Can you take antibiotics while taking Phentermine?

Another important question: Can you take antibiotics while taking Phentermine? There are few studies on this subject, and their results are rather inconsistent. For example, according to one study, the combined use of antibiotics (especially penicillins) and Phentermine can lead to acute interstitial nephritis.

According to another study, combining Phentermine and antibiotics can cause increased adverse reactions. So, you should be cautious when using antibiotics and Phentermine together and take them only after consulting a doctor.

Can you take laxatives while taking Phentermine?

Constipation is one of the most common side effects of Phentermine. Usually, intestinal motility returns to normal within a few days, but what to do if constipation gets chronic? How to fight it? Can you take laxatives while taking Phentermine?

Taking such drugs is possible for quick relief of the condition for no more than two weeks. If constipation persists, you should take other measures, such as adding fiber to the diet and drinking plenty of fluids. For the final solution of the problem, you should consult a doctor.

What is the relationship between Phentermine and smoking

It is common knowledge that Phentermine is incompatible with alcohol and caffeine. As for smoking, you should also give it up during treatment with this drug. Why should you avoid combining Phentermine and smoking? Both have a stimulating effect on the CNS, which can lead to increased side effects.

Information on Phentermine from Erowid

Before deciding to take the drug, you can get information about Phentermine from Erowid – a non-profit educational organisation. On the website of this organisation, you can find reports of those who used the drug with a description of sensations and effects. These reports will help you better understand what to expect from Phentermine.

Is feeling cold on Phentermine possible

Some people complain of feeling cold on Phentermine. According to a study, this side effect is most common in people who take the drug for less than a month and then goes away. For example, the study shows that 66.67% of people feel cold during the first month, and 33.33% of people feel cold during 1–6 months.

How are Phentermine and the urge to urinate related

Impaired urination is one of the psychological side effects of Phentermine. There is a relationship between Phentermine and the urge to urinate. This is because the drug increases the bladder sphincter’s tone, making it difficult to urinate. The bladder doesn’t empty completely, and you may experience a frequent urge to urinate.

Can you combine Phentermine and Methamphetamine?

Combining Phentermine and Methamphetamine is dangerous. Both drugs affect the heart, significantly increasing its load. As a result, you may have such side effects as:

  • Increased blood pressure;
  • Increased heart rate;
  • Heart attack;
  • Heart stroke.

As you can see, the combination of these drugs is very dangerous, and you should avoid it.

Phentermine and Phendimetrazine: can you take them together

Another dangerous combination is Phentermine and Phendimetrazine. It leads to an increased risk of heart problems. Most often, complaints include:

  • Shortness of breath;
  • Chest pain;
  • Dizziness;
  • Fainting;
  • Swelling of the legs and feet.

Any of these conditions should be a reason for an immediate visit to a doctor.

Can Phentermine and Viagra be harmful to health?

Since many men have obesity adversely affecting erectile function, taking Phentermine and Viagra together seems to be an excellent solution.

Although no data confirms drug interaction, you should not exclude it. So, before combining the drugs, consult a doctor.

Combining Phentermine and Paxil

When taking Phentermine and Paxil together, the latter may enhance the effects of the former, resulting in side effects such as anxiety and restlessness. Moreover, it may lead to the so-called serotonin syndrome characterised by:

  • Mental fog;
  • Hallucinations;
  • Jumps in blood pressure;
  • Fever;
  • Increased heart rate;
  • Blurred vision;
  • Muscle spasms, etc.

In severe cases, the syndrome can cause coma and even death.

Avoid Phentermine and Propranolol

According to a study, taking Phentermine and Propranolol together can cause a number of adverse side effects, including:

  • Depression;
  • Insomnia;
  • Alopecia;
  • Amnesia;
  • Muscle weakness;
  • Myocardial infarction;
  • Acute kidney failure, etc.

If you are taking both drugs, inform your doctor about it so that he can decide if you need this combination.

Are Phentermine and Diethylpropion dangerous for the heart when taken together

This drug combination is undesirable since taking Phentermine and Diethylpropion together can lead to serious heart problems. You should see a doctor immediately if you experience symptoms such as:

  • Shortness of breath;
  • Chest pain;
  • Dizziness;
  • Swelling of the legs and feet.

Phentermine and 5 HTP/ Carbidopa combination for improved effectiveness

According to the data, combining Phentermine and 5 HTP/ Carbidopa leads to losing more weight and more effective appetite reduction than each drug alone. Perhaps these results will make it possible to use such a combination to treat obesity.

Phentermine and Paracetamol: what to know

According to a study, taking Phentermine and Paracetamol together can lead to side effects such as:

  • Nausea;
  • Vomiting;
  • Flu-like conditions;
  • Stomach ulcer, etc.

The possibility of such conditions requires consulting a doctor before taking Paracetamol during Phentermine treatment.

Phentermine and birth control pills: does it affect the effectiveness

As a rule, combining Phentermine and birth control pills doesn’t affect the effectiveness of the latter but may cause bleeding or seizures. You should inform a doctor about taking birth control pills before he prescribes Phentermine for you.


Before using Phentermine, tell your doctor about all the drugs you are taking. Each medicine can interact differently with Phentermine, resulting in adverse and even deadly side effects. Do not self-prescribe medications while you are taking Phentermine. Only an experienced specialist can do it.

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