Most people use 350-500ml of water or milk per serve, but add more or less liquid if you prefer. It tastes best with very cold liquid. Experiment with different amounts and combinations of water and milk to find your perfect mix.

You can mix FastFx with just cold water or 50/50 water and skim milk (or dairy-free milk). This choice depends on your weight loss goals and taste preference.

Adding milk provides more energy and satiety, and the daily recommended dosages are worked out on a milk plus water mix. Some also prefer the taste.

Whether you choose water or milk or a combination is up to you, your weight loss goals and your taste preference. Experiment with different ratios to find what works best for you. 

FastFx offers complete flexibility—replace 1, 2, or 3 meals. More meals replaced will mean faster weight loss, but your choice depends on your commitment level and goals.

Replace all 3 meals – Fastest results
Kickstart your metabolism and trigger ketosis for serious fat burning. Ideal for maximum weight loss
Lose 2–4 kilos per week
No cooking or food prep required

Note: The first 2–3 days can be tough as your body adapts. It takes discipline and commitment. It can be done, so stay determined and committed - it does get easier.

Replace 2 meals – Balanced and flexible
Perfect if you need room for family dinners or social events, or know cutting out all meals isn’t realistic.
Lose 1–2 kilos per week.
More sustainable for many lifestyles. Just be mindful of what else you eat to stay on track.

Replace 1 meal – Gradual and sustainable
The easiest way to start your journey, with slower but steady results.
Still lose weight over time.

Great for those easing into change. Be extra aware of your other meals to maximise your success.

Ketosis is a complex metabolic state triggered when calorie intake drops sufficiently, forcing your body to burn fat reserves. In basic terms, your liver produces ketones that enhance fat burning and signal your brain to reduce hunger.

Achieving ketosis is the optimal zone for weight loss but can be very difficult through conventional dieting alone. FastFx is specially designed to help you get into ketosis faster

Key difference: A "keto diet" differs from achieving "ketosis." Keto diets are extremely low-carb but high-fat. Ketosis simply means your body is burning fat for fuel—regardless of how you achieve it.

FastFx isn't a keto diet (though it is low-carb). Rather, it triggers ketosis through controlled calorie reduction.

Why not strict keto?
We recommend against high-fat keto diets due to limited medical support and potential health risks when taken to extremes.

Our balanced approach
FastFx reduces overall calories while replacing nutrient-poor calories with nutrient-dense ones. It provides sufficient energy (carbs) to fuel your day without slowing metabolism.

The result: Your body enters ketosis within days, initiating genuine fat burning but not compromising your health.

No. FastFx is low-carb and triggers ketosis, but it's not a "keto diet". Keto diets are extremely low-carb AND high-fat while "ketosis" is simply your body's fat-burning state. You can achieve ketosis without following a strict Keto diet.

Why we don't recommend Keto diets
We don't recommend strict keto diets (low-carb, high-fat) due to limited medical support for high-fat approaches. Extreme keto can actually be dangerous.

Our approach
Instead of loading up on fats, we focus on reducing total calories while swapping nutrient-poor calories for nutrient-rich ones.

FastFx provides enough carbs (which are essential to provide energy) to fuel your day without slowing your metabolism, while staying very low in unhealthy fats.

The result
Your metabolism stays switched on, you have enough energy and your body enters ketosis within days, triggering real fat burning—without the risks of extreme high-fat dieting.

FastFx contains less than 17g of carbohydrates per serve, qualifying it as low-carb (under 57g daily). We include this amount because carbohydrates are essential for energy and overall health.

Meeting safety standards
We believe diets that eliminate all carbohydrates are unhealthy and wouldn't meet New Zealand's Formulated Meal Replacement guidelines.

New Zealand and Australia enforce strict criteria for "Formulated Meal Replacements"—our carbohydrate content must fall within these regulated ranges. Any lower and a product doesn't qualify as a meal replacement.

The problem with ultra-low carb products
Many products contain too few carbohydrates to meet safety criteria. These can only be used as supplements, not meal replacements, and shouldn't substitute actual meals.

Our approach
FastFx delivers the minimum carbohydrates needed for safe, effective meal replacement while maintaining the low-carb benefits that trigger ketosis.

Rest assured: FastFx contains zero refined sugar and no artificial sweeteners.

The "sugar" percentage on our label can be confusing—it actually refers to carbohydrates, which labeling regulations require us to list as "sugars."

Why we include carbohydrates
Carbohydrates provide essential energy and are vital for health and wellbeing. We believe diets that eliminate all carbohydrates are unhealthy.

Meeting safety standards
New Zealand and Australia enforce strict criteria for "Formulated Meal Replacements"—our carbohydrate content must fall within regulated ranges. Products with insufficient carbohydrates don't qualify as meal replacements and can only be used as supplements.

What's actually in fastFx
The "sugars" in FastFx are plant-based, slow-release carbohydrates that provide sustained energy and help you feel fuller longer. This helps you stick to your plan instead of reaching for biscuits.

The bottom line
You're getting regulated, essential carbohydrates—not refined sugar—in a form that supports your weight loss goals while meeting strict safety standards.

Yes.  There is a scoop inside every bag.  Sometimes they nestle down into the powder, so you might need to have a little poke around to find it.

Why FastFx tastes different

FastFx flavour profiles are intentionally designed to be subtle and not overly sweet. While most people love the taste immediately, some find it takes a few servings to appreciate—and here's why that's actually a good thing.

Natural ingredients
Our flavours come from real, natural ingredients rather than artificial alternatives. Take our Mixed Berry—it's flavoured with actual dried berries, not artificial berry flavouring. If you're expecting something like a strawberry milkshake, you might be surprised. Those intense flavours we're used to often aren't even made from the real thing.

Designed for long-term success
We've intentionally kept flavours subtle because intense flavours become overwhelming after a few days. Other meal replacements often become difficult to drink consistently. Most people find a more subtle flavour makes it easier, over time, to stay committed.

Reconditioning your palate
Here's the real benefit: we're helping retrain your taste buds. Our culture has become accustomed to intense, artificial sweetness and flavours. FastFx's more subtle flavours help reduce your dependency on overly sweet foods, making your transition back to regular eating more successful.

The result
You're not just losing weight—you're developing healthier taste preferences that will serve you long after reaching your goal.

Fastfx does contain some FODMAPs. While it contains no common allergines (it is dairy, fish, soy and gluten free), it does contain Oligofructose and Inulin, which for a very small number of people can be a trigger for IBS symptoms. 

If you have IBS or gut issues, then you would be better suited our Gut Friendly Meal Replacement - Eliminate. which is certified low FODMAP by Monash University.

FastFx is safe for people over 65—we're simply required by labelling regulations to include this precaution.

Why the warning?
New Zealand's calorie guidelines and daily recommended amounts are based on adults aged 18-65. While daily requirements for someone over 65 are usually no different, those are just the parameters of the official guidelines.

Regulatory compliance
We're bound by labelling rules that require these precautions for anyone outside the 18-65 age range—it's not because the product is unsafe, it's because the official nutritional guidelines don't extend beyond those ages.

When to consult your GP
If you have existing health conditions (like diabetes), it's always good to discuss any diet or lifestyle changes with your doctor first. This applies to anyone at any age.

If you lose significant weight, any medications you're taking may need dosage adjustments—your GP can monitor this and make necessary changes.

The bottom line:
The age restriction is a labeling requirement, not a safety concern. FastFx works the same way for healthy adults regardless of age, but we must follow official guideline parameters for our packaging.

Yes.

Safe but not sufficient

FastFx contains nothing harmful to your baby—in fact, extra vitamins and minerals would be beneficial for your baby's health. However, when you are pregnant you need more, not less calories and it isn't usually the time for weight loss.

Increased calorie requirements

• First trimester: ~1,800 calories daily
• Second trimester: ~2,200 calories daily
• Third trimester: ~2,400 calories daily

Three FastFx servings provide only 612 calories—not nearly enough to nourish you and your growing baby.

Using FastFx while pregnant:
You can incorporate FastFx into a healthy pregnancy diet, but you'd need to add substantial calories from other nutritious sources throughout the day.

Better option: TotALL
During pregnancy, we recommend our TotALL Nutrition instead. It offers:

• All of FastFx's essential nutrients
• Higher calorie content
• Less filling, so you can comfortably consume additional healthy calories

Talk to your Doctor
Because your health and your baby's development are paramount, discuss any diet changes with your doctor first.

Bottom line:
FastFx is safe during pregnancy but designed for weight loss, not the increased nutrition needs of pregnancy. TotALL (as a supplement) would be better support during pregnancy.

Yes. FastFx is safe while breastfeeding and doesn’t contain anything that could harm your baby. In fact, the added vitamins and minerals can help support both you and your baby during this important time.

Many breastfeeding mothers use FastFx—either to manage weight carefully or to top up their essential nutrients. However, there’s one key consideration: nursing requires an additional 450–500 calories per day.

A full FastFx programme (3 shakes per day = 612 calories) isn’t enough to meet both your needs and your baby’s. You’d need to add approximately 500 extra calories to maintain your energy and milk supply.

Adding calories

• almonds, fruit, rice crackers, avocado, veggie sticks with hummus
  
• high-protein dinner: e.g. grilled chicken or tofu, a small potato or kumara, and plenty of vegetables
  

Aside from calorie needs, FastFx is safe during breastfeeding. Just make sure to care for yourself and stay well-nourished during this exciting (but demanding) chapter. We always recommend checking in with your Doctor.

Our soups are fully formulated meal replacements—just like FastFx Smoothies—and can be used to replace any meal. They're ideal for adding variety, especially if you’re craving something savoury and warm.

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What makes them different?

fresh, whole food ingredients, not powdered

no preservatives

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Each soup includes:

2 serves of vegetable soup

2 packets of FastFx Vitamin and minerals

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To prepare:
1. Heat one serve of soup.

2. Whisk in one packet of powder.

3. Add hot water to taste.

Because we use fresh ingredients and no artificial preservatives, FastFx Soups have a slightly shorter best-before date than our powdered products.

These tasty dressings have been made to complement the FastFx weight loss programme.  We designed them to add to your 2 cups of vegetables or salad, to give variety and flavour to your meal, without adding the calories.  At just approximately 20 calories per serve, they are an easy way to keep it interesting, without compromising your weight loss.

Barely Dressed dressing are also ‘naked’ of artificial sweeteners,  artificial flavours, dairy, gluten, soy and other nasties.

Yes, FastFx is suitable and safe for people with Type 2 Diabetes. 

In fact, there is a lot of research to show that a Meal Replacement, like FastFx, can really help with Type Two diabetes, not only because it is very low in sugar and fat, but also because losing weight can help reduce and often reverse Type Two Diabetes.

We would suggest you watch your blood sugars levels carefully, as a change in diet can cause changes there and keep your GP in the loop.

Also keep in mind that, as you lose weight, you may need to change your prescriptions dosages,  so talk to your GP about that.

TotALL is another HealthFx Formulated Meal Replacement, that gives you all your essential vitamins, minerals and energy.

The difference is that TotALL has been designed for nutrition not weight loss.  It contains slightly more calories than FastFx, slightly different sources of plant protein and fibre and contains some healthy fats. 

TotALL is perfect for busy people, who want a quick and simple way to eat well. It is also helpful if you have health concerns that mean you struggle to eat normally, or for fussy eaters.

Like FastFx, TotALL is still plant based, vegan, allergen and preservative free and made in NZ.

If your main goal is weight loss, FastFx is the product of choice.

Given all the incredible ingredients we've put into FastFx, sometimes, the first few sips can be surprising. Our taste buds are used to high fat, sugar and flavourings. Something that is 100% healthy can take some getting used to. We've designed FastFx to work and know you'd prefer a product that does what it claims, not just taste like a milkshake.

It's important to say that over 70% of our customers are repeats, so almost everyone loves (or comes to love) the taste of FastFx.

If you're in the early days and finding it a bit tricky, try a few of the tweaks below—you’ll almost certainly find something that works for you. After just a few days, your taste buds will adapt, and you’ll likely be able to enjoy FastFx without any extras.

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If you need, try adding;

- very cold water or a handful of ice

- more water or milk to taste

- frozen berries or

- half a banana or

- vanilla drops

- sprinkle of cinnamon

- half a teaspoon of honey or natural sweetener

- coffee or milo

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Try a different flavour

Also, it's amazing how customers love (and don't love so much) different flavours. Most people enjoy one or two of the flavours much more than the others. So, if you are struggling with the taste, but want to persevere (because you know it works), why not buy our Mixed Box and find a flavour you love.

Our most popular flavours are Vanilla, Chocolate and Mixed Berry. Salted Caramel is another favourite.

But, it is amazing how customers love different flavours. So, if you are not sure, why not try our Mixed Box, a single serve of each of our flavours - to help you find your favourite flavours.

Essentials is a supplement you can add to your home made soup etc to boost the nutrition while keeping the calories very low.

It is the same 'supernatural' powder that comes with our FastFx Soups, but we've popped it in a tub for those who prefer to make their own soup or add it to other recipes.

Simply add a few scoops of Essentials and mix, to boost your protein, fibre, vitamins and minerals to stay healthy and fuelled while you lose weight.

At only 76 calories per serve, it is the perfect way to supplement your soup while you are cutting the calories. 

Essentials is tasteless and will mix easily into soups, pasta sauce etc.

It can also be a great way to get extra nutrients into the family meal.

Note:  Unlike FastFx (which is a Formulated Meal Replacement) Essentials is a supplement and should be added to other food or used in addition to FastFx Shakes.

If you only replace 1-2 meals a day with FastFx then it is important that you eat mindfully for the other meals.  Remember that weight loss will only occur if you keep your other calories low.

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If you are eating lunch or dinner, then aim for high protein (a piece of lean beef, chicken, egg or tofu etc) and low in carbs, with a large salad or low starch steamed vegetables (eg beans, broccoli, carrots etc).

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Carbohydrates (such as pasta, rice, bread), can cause weight gain because of our tendency to overeat them.  Some are fine, but try to keep these to a minimum.  Protein, on the other hand, helps build muscle (which fuels your metabolism) and you are also less likely to overeat protein.  

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A big serving of non-starchy vegetables will also help to fuel your body and can help fill you up while being low in calories.

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An excellent dinner, for example, would be a piece of grilled chicken, with a large serving of broccoli, courgettes, beans, cauliflower, stir-fried with garlic and lemon juice.

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Replace oils and sauces with calorie-free herbs and spices or add our low calorie dressing, to keep it interesting and tasty.

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If you'd like more ideas or an eating plan, check out our Cook Book, which has some lovely, very low calorie recipes (that can be added to a piece of protein for your third meal or used as your 2 cups of vegetables/day).

If you are replacing all 3 meals a day, then you may also eat 2 cups of low starch vegetables and 1 tsp of oil.  The vegetables can help digestively and, psychologically, having something solid to eat can be beneficial.

Below is a list of suggested vegetables you can add to your daily programme. 

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The vegetables we recommend you avoid are vegetables that are higher in calories. You can, of course, eat these, but we just suggest you minimise them because they are higher in calories and can stall your weight loss.  

For ideas and recipes for your 2 cups of vegetables, check out our Recipe Book.

Recommended

Aubergine, Asparagus, Bean Sprouts, Beans (green), Bok Choy, Broccoli, Brussel Sprouts, Cabbage, Capsicum, Carrots, Cauliflower, Celery, Courgettes, Cucumber, Lettuce, Kale, Mushrooms, Onions, Radish, Silver Beet, Snow Peas, Spinach, Tomatoes.

Try to avoid (or minimise)

Potatoes, Kumara, Legumes, Lentils, Peas (green), Parsnip, Turnip, Kidney beans, Chickpeas, Soy Beans.

Water is your best friend. Aim for around 2 litres a day—it helps fill you up, supports your metabolism, and keeps your muscles, skin, kidneys, and digestion functioning well. If you feel hungry, try a big glass of water first.

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If you find drinking 2 litres difficult, try sparkling water, or add lemon, cucumber or a scoop of Alleviate for flavour.

Other drinks

You can also drink

- Sugar free or diet drinks.

- Black tea and coffee

- Herbal tea

Minimise

- Juices (approx 112 cal)

- Energy drinks (approx 250 cal)

- Milky coffees (approx 150 cal)

- Alcohol (a glass of wine approx 120 cals, beer approx 155 cal).

Yes, but try to have them with less or no milk or sugar. Milky coffee can be a real trap for weight loss. In fact, a Starbucks Latte contains 230 calories!  Black coffee and tea are the best option.  If you are especially attached to your morning latte (we get it), try to limit milky coffee to one per day and use a natural sweetener instead of sugar.

If you are replacing all three meals a day we recommend that you also add 1 tsp of Oil to your two cups of vegetables.

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Olive oil works well but if you prefer you can use any plant based oil that is low in saturated fats.

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Do carefully measure the oil - one teaspoon of oil has approximately 40 calories, but one tablespoon has 120 calories - so keep an eye on your proportions so you don’t blow out your calories.

We recommend the extra oil because FastFx is very low in fat, which is great for your weight loss, but not consuming any fat can potentially leave you vulnerable to developing gallstones.  Rapid weight loss can cause your liver to release more cholesterol into the bile, which can lead to the formation of crystals.  These crystals can occasionally go on to develop into stones.  An active ingredient in Olive Oil reduces cholesterol in the gallbladder and therefore can help to stop gallstones forming.

The irony is that losing weight will help with gallbladder disease, but just make sure you add the small amount of extra olive oil within your diet if you are replacing all three meals with FastFx.

Absolutely, we have lots of customers who like to customise their smoothies with a few additions. 

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Just keep in mind that most additions will increase the calories slightly, so be mindful of what you add and how much.

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If you are focused on weight loss, but still want to add things, look for low calorie options -for example cinnamon, honey, vanilla, half a banana or a shot of coffee to add variety.