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Instant Natural Protein Chocolate

  • A vegan chocolate shake with 26 g of protein per serve.
  • Protein is necessary for tissue building and repair.
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Price $26.95 Save 4% RRP $28.00

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  • Best value

Price $26.95 Save 4% RRP $28.00

You'll Earn pts
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Disclaimer

Users assume all responsibility and risk for using the Mr Vitamins website. Information provided on the Mr Vitamins website is provided on an “as is” basis. By using this website you consent to the possibility of delays, omissions, inaccuracies, or other issues in content. Furthermore, you agree that should you rely on this content, you are doing so at your own risk. In no way is Mr Vitamins liable to you or any third party for damages, including but not limited to, loss of use, loss of data, loss of profits, or business interruption. While we do our best to maintain current and correct information that is free of errors or viruses, Mr Vitamins does not guarantee that its website and its contents are free of these harmful components.

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None of the information presented on the Mr Vitamins website is intended nor should be considered as a medical diagnosis or form of treatment. Content found on the Mr Vitamins website does not replace or undermine medical advice. This content is purely for your general knowledge and information not for purposes of self-diagnoses. Prior to starting any health, nutritional, or supplemental-related treatment, you should always seek the direction of a physician, medical practitioner, or an otherwise qualified health provider. At the same time, you should consult with a physician, medical practitioner, or an otherwise qualified health provider regarding any ongoing medical treatment or medical questions you may have.

Practitioner Only Products

When purchasing practitioner-only products from Mr Vitamins, it is the customer's responsibility to purchase the correct products prescribed to them by their practitioner(s) and to take them as they have been directed from their practitioner. Mr Vitamins will not be responsible if a customer provides us with incorrect information about their practitioner.

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Soy Protein

Is soy protein as good as whey?

In a head-to-head trial matched for leucine, soy built the same lean muscle and strength as whey over 12 weeks. It's complete enough to stand on its own, with no pea or rice blend needed.

Christina Hanley, BHSc (Nutritional Medicine), Digital Experience & Content Manager, Mr Vitamins

Christina HanleyBHSc (Nutritional Medicine), Digital Experience & Content Manager
Checked this page October 2026

See what we checked

Is this the right protein powder for you?

Common questions

Does soy protein mess with hormones?

No. A review pooling 41 studies in more than 1,750 men, across every dose and length tested, found soy protein and isoflavones didn't change total or free testosterone, oestradiol, oestrone or SHBG. A separate two-year trial at 20 g a day found no effect on thyroid hormones either. It's one of the most thoroughly checked questions about protein, and the answer keeps coming back the same.

Is soy protein actually as good as whey?

In the trial that compared them fairly, yes. When soy and whey were each dosed to give the same 2 g of leucine, both groups gained the same lean muscle and leg strength over 12 weeks, with no measurable difference. Across 9 studies, soy has also matched whey, beef and dairy protein generally for strength gains. Soy's big advantage is that it's the only plant protein complete enough to stand alone, without adding pea or rice to fill an amino acid gap.

How much, and when

Food sources

Food first, where the diet allows it.

  • Soymilk: the dose used across 17 trials replacing cow's milk for cardiometabolic markers: 22 g soy protein per 500 mL
  • Tofu, tempeh and edamame carry soy protein too, though no cached trial gives a per-serve figure: varies by product

The evidence, and its limits

The Australian rules

Soy is the best-covered plant protein in Schedule 1, Australia's permitted ingredients list (Schedule 1, Determination No. 2 of 2026). SOY PROTEIN is item 4692, allowed with no specific conditions, no warning and no daily limit. GLYCINE MAX (the plant itself, item 2414) and SOYA BEAN (item 4694) are also allowed with no conditions. Two related items are easy to confuse but aren't alternatives: SOYBEAN FLOUR (item 4696) is allowed only as a flavour or fragrance, capped at 5% total flavour concentration, and HYDROLYSED SOY PROTEIN (item 2634) is allowed only on the skin at no more than 0.5%, not as an oral protein. Almost every soy protein powder on an Australian shelf is actually sold as an ordinary food, so its claims fall under food standards rather than the permitted claims for medicines. Check the pack for an AUST L number before applying any claim wording from this page, and remember that being allowed isn't the government endorsing any product or any claim.

Read the instrument: Schedule 1, item 4692.

Not sure this is the right form for you? Ask one of our naturopaths. It is free and takes 10 minutes.

Soy Protein is one form of Protein Powder. Always read the label and follow the directions for use. General information only, and not a substitute for advice from your doctor or one of our naturopaths.

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