Phentermine is an FDA-approved pill suitable for weight loss. It contains ingredients that suppress your appetite and curb food cravings.

Phentermine boosts body metabolism through thermogenesis. It works effectively alongside regular exercises, low-calorie diet to make you lose weight. Nonetheless, there are certain Phentermine side effects you need to be aware of.

How Bad is Phentermine For You?

There are certain side effects that are associated with Phentermine. These side effects might be mild or severe. Common side effects include:

  • Increased heart rate

Phentermine stimulates your metabolism which results in an increased heart rate. This can weaken your heart muscle and lead to heart failure. 

  • Dizziness

Phentermine contains stimulants that can make individuals dizzy or light-headed. This will make you feel feeble.

  • Insomnia

Phentermine contains caffeine which keeps one awake and active at night especially when used late in the day. This usually occurs during the first week of medication. However, this side effect decreases when patients have been on the pill for several weeks.

  • Stomach side effects

It comes with stomach side effects such as stomach pain, nausea, constipation and vomiting. These side effects might result from metabolic acidosis (too much acid in the blood). Constipation can be managed when you drink water or eat enough fibre.  

  • Irritability

Patients are more irritable while taking Phentermine but they rarely stop taking it because of this effect. 

  • Headache

Headache is one of the side effects of Phentermine. Many people observe that the side effects might be mild or severe. It is advisable to see your doctor if it persists.  

  •   Diarrhea

Diarrhea is another side effect of Phentermine. Phentermine can make you lose a lot of water in your body which can result in dehydration, weakness and loss of electrolytes. (1).

  • Vision changes

Phentermine may increase eye pressure. This can cause vision changes such as pain in the eye, cloudy vision or dimness and may cause permanent damage to one’s vision. This pill is not advisable for people with glaucoma.

  • It can damage your heart valves

Phentermine may damage your heart valves. This will result to an interruption of blood flow from the heart to your body. It comes with symptoms like weakness, irregular heartbeats, chest pains, faintness. 

  • Jitteriness

Phentermine contains stimulants which can make you feel jittery or shaky. It happens when you take an overdose of the pill.  

  • Dry Mouth

Many patients will experience dry mouth while using Phentermine. This side effect can be manageable with a high intake of water. In addition, it can also be managed when you chew sugar-free gum. 

  • High blood pressure

Phentermine may make your heart work harder, resulting in a serious increase in blood pressure. 

  • Other side effects

Other side effects of Phentermine include depression, urinary retention, panic disorder and so on.  

Phentermine Alternatives

If you are looking to lose weight, and would like to try some other over the counter Phentermine alternatives then it is best to consider supplements that contain natural ingredients which have been clinically tested to be effective for weight loss, and are deemed safe for consumption. Some of the popular diet pills similar to phentermine available on the market include PhenQ, PhenGold, Zotrim, and TrimTone.

Bottom Line 

Phentermine enhances weight loss in the body, and can help you lose up to 10 pounds in a month. It is important to note that Phentermine might contain ingredients that might cause mild or severe side effects. Thus, it is advisable to talk to your doctor about your health history and consult them if you experience these side effects.

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