Does Slimfast Help You Lose Weight?

Slimfast is a nutrition and weight loss supplement that promises to help you lose weight. Does it live up to the hype? Let’s take a look.

Key Facts About Slimfast

Slimfast is a weight loss supplement that is produced and marketed by Bio-Life Sciences. It is currently available in both liquid and solid forms, with the former being the most common and best-selling option. Slimfast is made up of a number of natural and potent compounds that work in combination to shed off those extra pounds.

The company makes bold claims about the efficacy of their product, boasting that it ‘is a proven way to help people get fit and lose weight’. They also go on to say that it ‘is the secret weapon behind hundreds of exciting weight loss stories, seen on social media platforms like Instagram’.

While we certainly can’t put into context the claims made by Slimfast and its marketing material, we can report back on our experience using the product.

User Review: Worth Trying Or Should You Avoid It?

Slimfast is currently available internationally, with the UK being one of the only countries where it is sold as a dietary supplement.

It has been rated as high as 4.8/5 based on more than 40 user reviews on, with customers reporting a significant weight loss while also enjoying the benefits of the product. However, users are also reporting some side effects, the most common one being gastrointestinal discomfort.

Based on this, it is arguably best compared to a nootropic product like Provestra, which is also sold on Amazon. Although some people have reportedly lost a lot of weight while using Provestra, the number of reports of unpleasant side effects is much higher.

An Overview Of How Slimfast Works

Slimfast is a ‘lipid-lowering compound’ which, in plain English, means that it helps to reduce ‘bad’ cholesterol (LDL) and ‘increases’ the ‘good’ cholesterol (HDL) in your bloodstream.

Cholesterol is an essential component of cell membranes in your body and helps maintain the structural integrity of your cells. For this reason, your body needs cholesterol if you want to remain healthy.

There is also emerging evidence to suggest that high cholesterol can lead to heart disease. When your LDL and HDL are out of balance, your body’s ‘homeworkers’ (known as cholesterol transfer proteins) are not able to do their jobs effectively, leaving your cholesterol levels high and your body’s risk of heart disease increased.

In research studies, Slimfast has been shown to reduce LDL and triglycerides while increasing HDL. In one study, participants were randomly assigned to either take a placebo or one of two doses of Slimfast — 400 mg or 800 mg — for 12 weeks.

Those who took the 400 mg dose reported a significant decrease in LDL levels, while the participants who took the 800 mg dose saw a more significant decrease in triglycerides and an increase in HDL levels. This is clinically relevant because there is mounting evidence to suggest that keeping LDL and triglycerides low while increasing the good cholesterols (HDL) in your blood can help to reduce your risk of heart disease and stroke.

Slimfast Side Effects: Are They Worth Knowing About?

Like any other product, Slimfast is not without its risks. One of the side effects that have been reported by users is gastrointestinal discomfort, which can include cramping, fullness, and heartburn. This is certainly not an uncommon issue when it comes to taking a dietary supplement and is generally harmless if it is not severe. However, if you have existing gastrointestinal issues, you should probably avoid taking any dietary supplements including Slimfast.

That being said, the other side effects that have been reported by users include:

  • Dry mouth
  • Headaches
  • Stomach aches
  • Muscle aches
  • Dizziness
  • Nervousness
  • Drowsiness
  • Tiredness
  • Loss of appetite
  • Difficulty breathing
  • Heart palpitations

These side effects are generally mild and will only occur while you are using the product. They should resolve themselves once you have stopped taking it, however, if they are still present after a week or two, then this could be a sign that you are not suited to take the product and should consult your doctor.


Overall, Slimfast is a safe and effective product that can help to reduce your cholesterol levels and, as a result, your risk of heart disease. If you are looking for a nootropic product that has a slimming effect, then you could certainly try it.

Whether you are trying to lose weight or not, it’s always a good idea to check with your doctor before taking any supplements, especially when you are first starting out. Your doctor can advise you on the best options for you based on your medical history and current weight.