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Fastin and Headaches: What Users Say

Headaches: mentioned by 3 users (3.7%)

Based on user experiences from 81 Fastin reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

increased heart rate 32.1%
anxiety 19.8%
nausea 12.3%
tremors 12.3%
headaches 3.7%

Reviews for Fastin

Showing 3 reviews tagged with "headaches". Clear filters to view all 81 reviews.
Commonly mentioned side effects
  • La-...
  • Taken for 1 to 6 months
  • December 13, 2015

For Weight Loss (Obesity/Overweight) "I was prescribed Fastin for weight loss. The prescription pills worked great, not a single bad side effect. I lost over 50 lbs in about 4 months. It gave me energy to start working out, and WOW did my concentration for work improve. However, the pills were costly and given out in the office only. So every month it was $40 for the doctor visit and weigh-in, and another $40 for 1 month's worth of pills. When I was unable to afford this regimen, I looked for cheaper alternatives. I got some over-the-counter bottle of Fastin, I bought 2 bottles. These are unhealthy, way over-caffeinated crap! I had gotten very ill halfway into taking the first bottle and had to stop because of jitters, headache, paranoia, racing heart!!! My advice, pay for the real stuff."

9 / 10
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43 Report
  • Cry...
  • June 22, 2019

For Weight Loss (Obesity/Overweight) "Got these pills and took a pill after breakfast, and my heart felt like it was going to pop out of my chest. Increased heart rate, blood pressure. Also gave me a terrible headache and nausea. Felt like I was going to die. Had to go to the hospital, and the doctor told me I was getting an anxiety attack as well. Would not recommend it. Terrible experience."

1 / 10
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23 Report
  • So ...
  • Taken for less than 1 month
  • May 10, 2019

For Weight Loss (Obesity/Overweight) "Do NOT use this product. It has a strong caffeine-like effect. I took it and had the worst possible headache and felt so nauseated. Yeah, no wonder you’ll lose weight, you’ll feel so sick you won’t want to put anything in your mouth. Gosh, I feel so lightheaded after taking this. Definitely do not recommend."

1 / 10
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19 Report

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