Common Side Effects of Weight Loss Pills

I’m a big fan of using diet pills for weight loss – responsibly. Responsible use of diet drugs is an entirely story compared to irresponsible use – when you use these drugs the right way, they pose very little risk – however, up the dosage passed the recommended allotments and you can have a serious medical issue on your hands.


Many diet pill users report headaches and other sorts of pain in their head after switching over to weight loss drugs. This may have to do with the stimulant boost of these drugs or the sudden shock to the system these drugs can cause. While usually not severe, I personally prefer to ease into a new weight loss plan, to avoid this unnecessary issue.

Mood Swings

Mood swings are very common and are also a result of the stimulant nature of weight loss pills. Just like headaches, mood swings often occur due to the sudden onset of a diet plan in combination with weight loss pills. In my opinion, rather than suffer these various ailments by using a full dosage in the beginning, it’s a better idea to form good weight loss habits from the start and increase the dosage as your weight loss increases. That’s the way I did it when  I lost 50 lbs.


TMI!!! TMI!!! Well, you asked for the common side effects, so what did you expect? The fact is, constipation is a very real issue with new users and is an often underaddressed issue, for obvious reasons. I do have some good news, though – constipation is not caused by the stimulant like effects of diet pills, unlike headaches and mood swings.

Instead, constipation is usually a combination of a sudden diet change, lifestyle switch, and intake of new medications. Luckily, there are ways around this.

To avoid constipation, try to eat a wide variety of foods, predominantly focusing on fruits, vegetables, dairy, and lean meat. By avoiding processed foods, you can curb your constipation symptoms before they even start.

Most health conscious people think eating a large amount of fiber is healthy and decreases the risk of constipation. They’re right – however, the source of that fiber matters too. Did you know that it takes nearly 8 slices of whole wheat bread to equal the amount of fiber in a small eggplant? Or a half box of whole grain cereal to equal the amount of fiber in a container of raspberries? When it comes to fiber, fruits and vegetables are your best option – they contain way more fiber per calorie and way more nutrients anyway.

The type of fiber you eat also plays a role – fermentable, unfermentable, soluble, insoluble – all scientific jargon that probably isn’t worth your time. As long as you eat plenty of fruits and vegetables and sneak in some fermented foods such as kimchi once in awhile, constipation should be a non-issue.

In the end, it’s just important to remember – if you use the diet pills that I recommend on this site the right way (and stay away from the diet pills I don’t recommend), they pose very little risk to your overall well-being. So, go ahead and use diet pills – just use them right. And always keep in mind that more is not necessarily better – if you can do that long-term, you should be just fine.

Melissa Becker

Ever since losing over 50 lbs. in 2010, I’ve been writing informative blog posts and reviews for various diet products, such as teas, pills, and supplements. All products have been personally tested, in order to get the full story before posting it on this site.

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