icon-account icon-glass

Popular Products

The Lean Protein
Whey protein powder for weight-loss.
The Energy Booster
Pre/intra-workout powder with BCAAs.

4 Ingredients To Avoid In Supplements To Maximise Your Results

20th October 2021

20th October 2021

By Beth Shelper

Looking to maximise your results when it comes to those all-important fitness goals? Wanting to make sure the products you're using are safe? Of course you are.

When choosing the ideal fitness supplementation, it can be pretty overwhelming. Not only are you choosing the correct supplementation for your fitness goa, but you’re then navigating which ingredients to avoid in protein powder, and any other supplementation you may be taking. It can be a minefield.

Don’t let this put you off, though. Don’t ignore the ingredients on your products. If anything, take extra care when reading them. They’re more important than you may have even already thought.

When it comes to the top ingredients to avoid in supplements, you’re looking for a few key things. And we’re going to break them down for you. From added sugar to unnecessary fillers, here’s your one-stop guide to ingredients to avoid in supplements, by yours truly, Innermost. 

Without further ado…

Innermost’s top ingredients to avoid in supplements

Whilst we could spend all day talking about the benefits of natural supplements such as nootropics and adaptogens, this isn’t the time. Sticking to natural products will help you to avoid fillers in supplements and other ingredients to avoid in supplements that we’re going to mention, but firstly, let’s list our top four ingredients to avoid…

  1. Added sugar

Unsweetened protein powder can taste pretty bland. This is when some wellness brands turn to sugars to help out.

And whilst it’s important to maintain recommended glucose levels in your diet for energy boosting purposes, added sugar is quite frankly, unnecessary. You should try and cut down your sugar intake where possible, so any fitness supplements that use added sugars should be avoided. Added sugars are also highly addictive, and should be avoided for this reason alone.

Check the ingredients of your supplement to see what sweetener has been added here. Added sugars have been linked to obesity and heart diseases, so are best to be avoided. There are plenty of healthier alternatives to added sugars, such as natural sweeteners… for example.

  1. Xanthan gum (and other fillers)

One of the absolutely key ingredients to avoid are fillers in supplementations. Common fillers in supplementations include:

  • Cellulose
  • Gelatin
  • Starch
  • Talc
  • Silicon Dioxide
  • Titanium Dioxide

…just to name a few.

Sometimes referred to as bulking agents, fillers in supplementations are used for a number of reasons:

  • To keep manufacturing costs low
  • To achieve a desired supplementation texture
  • To up the amount of product a customer receives

Whilst you may be under the impression that your protein powder only includes protein, that is not the case. Make sure none of the extra ingredients are any of those harmful fillers mentioned above, as the presence of these can not only reduce the quality of your supplementation, but can cause bloating, gas and gastric discomfort – amongst other health issues (that we will go into later). Not what you want.

Here at Innermost we are committed to not using these harmful fillers in our products. You can be sure of it.

  1. Vegetable oils and fats

Often included to increase the richness, texture and taste of fitness supplementations, these oils can actually wreak havoc on your intestinal system. These oils are harmful to our diet in large quantities, so including them in fitness supplementations is entirely unnecessary. Not only unnecessary, but harmful.

They also add a large quantity of calories to your supplement, so if your fitness goal is to lose weight, these are definitely to be avoided.

  1. Skimmed milk powder

Used to bulk up powders that are lacking in quality, skimmed milk powder can be a nightmare for anyone with a lactose intolerance.

Skimmed milk powder should be avoided due to their high lactose sugar content, which can be pretty harmful to your gastrointestinal system. Think bloating, constipation, and gas. Not pleasant. Excess lactose and sugar can also cause acne and nausea… even to those that don’t have a particular aversion to lactose or dairy.

Why should I avoid these supplement ingredients?

All in all, every ingredient we have listed above has been linked to detrimental effects on users health. Whether that effect is organ damage, risk of acne, weight gain, heart defects… or even death. Now, that may sound pretty serious (and it is), when using supplementations with these harmful ingredients in them every day, you’re really putting yourself and your body at risk.

Instead, opt for natural ingredients, from reputable brands. The less ingredients the better, and if they’re backed by research, that’s the goal. That’s what we call a well and truly clean protein powder.

Summary

If you spot any of the above ingredients in a potential protein powder or supplementation, no whey should you be adopting the product into your routine. Cheesy protein puns aside, though, it’s important to track what you’re putting in your body.

Product Spotlight

Need Expert Advice?

Other Insights

The Myth of Optimal Health
We live in an age obsessed with the idea of “optimal.” The optimal diet. The optimal supplement stack. The optimal training split. Scroll through Instagram or YouTube for five minutes and you’ll find someone with a 17-step morning routine, a kitchen cupboard full of powders, and the confidence that they’ve cracked the code to human performance. But here’s the truth: Chasing “optimal” is one of the fastest ways to fall short in your health. The Illusion of Optimal Health culture has a way of dangling perfection in front of us. Big food companies do it when they market the “perfect” meal replacement shake. Biohackers do it when they promise that cold plunges, red-light therapy, and nootropics are the missing links to peak performance. But research paints a different picture. Studies on diet adherence consistently show that most people abandon strict or extreme health plans within weeks.  Fad diets, whether keto, paleo, or juice cleanses have dropout rates as high as 50–70% in the first two months. That’s not because people are weak. It’s because perfection is unsustainable. When you aim for “optimal,” you’re often aiming for something that doesn’t exist outside of a lab study or a heavily edited social feed. Consistency beats Intensity If you strip away the noise, the science is clear: the best plan is the one you can actually stick to. A Stanford University study looked at exercise adherence and found that people who built moderate, consistent routines were far more successful over the long term than those who went all in with aggressive, “optimal” plans. Think about it: Walking 8,000 steps daily is far more powerful than hitting 20,000 steps once a week. Sleeping 7–8 hours a night consistently beats the occasional marathon lie-in after a week of late nights. Eating balanced meals most of the time will always outperform the perfect, but impossible, “clean eating” schedule. Consistency doesn’t look flashy on social media. But it’s what drives lasting change in real life. The Perfection Trap The bigger danger of chasing “Optimal Health” isn’t just that it’s unrealistic. It’s that it creates guilt and paralysis. Psychologists call this all-or-nothing thinking. If you miss your “perfect” 5am workout, you write the day off. If you slip up on your diet, you feel like you’ve failed. Over time, that mindset burns people out. A review published in the Journal of Behavioural Medicine highlighted how rigid, perfectionist approaches to health goals were strongly linked to higher stress, lower motivation, and worse long-term outcomes. In other words: aiming for perfect often leaves you worse off than if you’d just aimed for “good enough” consistently. The Simplicity Advantage At Innermost, this is the philosophy we’ve always stood behind: better health should be simple, not overwhelming. We don’t believe in flashy shortcuts or marketing gimmicks. We believe in science-backed products designed to slot seamlessly into your life so you can actually stick with them. A few examples: The Hydrate Blend makes staying on top of electrolytes effortless — without the sugar, fillers, or artificial aftertaste you’ll find in the big sports drinks. The Rise Blend gives you clean energy and focus, without adding another complicated ritual to your already busy day. Our protein powders support your health and fitness goals with nutrients you and your body recognises, instead of pushing the latest overpriced fad ingredient. The goal isn’t perfection. It’s progress. Progress, not Perfection So here’s the takeaway: you don’t need the “optimal” plan. You just need a plan you’ll actually follow. If you focus on moving most days, eating whole foods when you can, sleeping properly, and staying hydrated, you’re already ahead of 90% of the population. It’s not sexy. But it works. And it’s sustainable. So the next time you feel the pressure to add another step to your routine, ask yourself: does this make my life simpler or more complicated? If it’s the latter, it probably isn’t worth it. Health isn’t about chasing perfection. It’s about building momentum. An imperfect plan, done consistently, beats the “optimal” plan abandoned after a week. Read more
Folate Blog Image