Question: Can phentermine cause negative pregnancy test?

Does phentermine cause false positive pregnancy test?

Since phentermine has a similar structure to amphetamines, it can turn up a false positive on urine drug screens for amphetamines or MDMA, as confirmed by a 2016 study. 1 A positive result will signal the need for a confirmatory test, which will then show that it was phentermine and not amphetamine or methamphetamine.

Can phentermine affect early pregnancy?

Risks if taken before pregnant

If you took phentermine before pregnancy, it should have no effect on your ability to carry a healthy baby to term. All traces of phentermine should pass through your body. Even if you took your last dose a week before conception, it shouldn’t have any effect on your pregnancy.

Can you get pregnant while on Phentermine?

If a man takes phentermine, could it affect his fertility (ability to get partner pregnant) or increase the chance of birth defects? There are no studies looking at possible risks to a pregnancy when the father uses phentermine.

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Can phentermine cause you to miss your period?

You will also be required to have a pregnancy test every month during your treatment. If you miss a period while you are using this medicine, tell your doctor right away.

Can you take phentermine every other day and still lose weight?

We suggest for those women trying to lose 25 lbs or less, you start weaning off the phentermine after the second month. Take the pill every other day for two weeks, then every third day, until you are down to 1 pill a week (usually Sunday) then stop completely.

Can anxiety medication cause false positive pregnancy test?

Other medications can also cause false-positive pregnancy tests. They include but aren’t limited to: anti-anxiety medications, like diazepam (Valium) or alprazolam (Xanax) antipsychotics, such as clozapine or chlorpromazine.

Can you lose 20 pounds in a month on phentermine?

Several clinical studies have proven that phentermine can boost fat loss. The expected average weight loss with phentermine use is 5% of your initial body weight. Yet, over 12 weeks, it can be as high as 10%. This equates to a weight loss of 10–20 pounds (4.5–9 kg) for a 200 pound (90.7 kg) person ( 8 ).

Can you take Plan B while on Phentermine?

It is important to keep taking your birth control AND use a barrier method of contraception while using your phentermine and topiramate. Emergency contraceptives may be less effective also. You may need a larger dose than normal.

What does phentermine do to the body?

It stimulates the central nervous system (nerves and brain), which increases your heart rate and blood pressure and decreases your appetite. Phentermine is used together with diet and exercise to treat obesity, especially in people with risk factors such as high blood pressure, high cholesterol, or diabetes.

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When should I take a preg test?

You should wait to take a pregnancy test until the week after your missed period for the most accurate result. If you don’t want to wait until you’ve missed your period, you should wait at least one to two weeks after you had sex. If you are pregnant, your body needs time to develop detectable levels of HCG.

What side effects does phentermine have?

Dizziness, dry mouth, difficulty sleeping, irritability, nausea, vomiting, diarrhea, or constipation may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. This medication may raise your blood pressure.

Can you take phentermine with high blood pressure?

Although phentermine is one of the most commonly prescribed weight-loss medications, it isn’t a good option if you have heart disease, high blood pressure, an overactive thyroid gland or glaucoma.

Does phentermine hurt your teeth?

People taking stimulants may notice bruxism (teeth grinding and clenching) and a decrease in saliva, resulting in dry mouth (called xerostomia). These side effects do not affect everyone, but for those who find them bothersome, there are ways to manage these problems.

Can phentermine affect your heart?

Phentermine may cause a serious increase in your blood pressure. This may make your heart work harder. The extra stress on your heart may make your heart disease worse.

Can diet pills mess with your period?

Weight Loss Pill:

A sudden change in weight can also affect menstrual cycle. Diet pills are known to cause irregular periods. A body fat percentage less than 17% can also affect menstrual cycle and lead to a lack of periods (as in many Olympic athletes).

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