Allmax Nutrition IsoFlex 5lbs Chocolate – Bulldog Nutrition Canada
Allmax Nutrition IsoFlex 5lbs Banana – Bulldog Nutrition Canada
Allmax Nutrition IsoFlex 5lbs Chocolate Peanut Butter – Bulldog Nutrition Canada
Allmax Nutrition IsoFlex 5lbs Cookies Cream – Bulldog Nutrition Canada
Allmax Nutrition IsoFlex 5lbs Strawberry – Bulldog Nutrition Canada
Allmax Nutrition IsoFlex 5lbs Vanilla – Bulldog Nutrition Canada

Allmax IsoFlex, 5lbs

Regular price $169.95 Sale price$147.97 Save 13%
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  • Brand Allmax Nutrition

Allmax IsoFlex is a whey protein isolate powder with no whey concentrate, per the label. Every flavour gives 27 g of protein and 120 calories per scoop, with 2–3 g of carbohydrates and 0–1 g of fat and sugars depending on flavour. The protein is ISOFLEX® whey protein isolate m...

Allmax IsoFlex is a whey protein isolate powder with no whey concentrate, per the label. Every flavour gives 27 g of protein and 120 calories per scoop, with 2–3 g of carbohydrates and 0–1 g of fat and sugars depending on flavour. The protein is ISOFLEX® whey protein isolate made with Allmax’s Hybrid-Ratio Ion-Filtration (HRI) — a blend of cross-flow ultra-filtered, ion-charged particle-filtered and alpha-lactalbumin-rich whey protein isolates. The 5lb tub holds about 75 servings (about 73 for Cookies & Cream).

Spec Per Serving (1 scoop)
Serving Size 1 scoop — 30 g (Chocolate, Vanilla, Strawberry, Chocolate Peanut Butter) / 31 g (Cookies & Cream)
Servings per Container ~75 (~73 Cookies & Cream)
Protein 27 g
Calories 120 (all five flavours)
Carbohydrates / Sugars 2–3 g / 0–1 g, by flavour
Fat 0–1 g, by flavour (Chocolate Peanut Butter 1 g)
ISOFLEX® Whey Protein Isolate 29.8 g
BCAAs (label amino profile) Leucine 2,750 mg · isoleucine 1,555 mg · valine 1,607 mg (about 5.9 g total)
Sweeteners Sucralose and acesulfame potassium
Flavours Chocolate · Strawberry · Vanilla · Cookies & Cream · Chocolate Peanut Butter
Label Marks Gluten-free (“Contains No Gluten”) · kosher dairy · registered facility · every lot lab tested
  • 27 g protein, 120 calories — per scoop in all five flavours, with 2–3 g of carbohydrates
  • Isolate only — the label states IsoFlex contains no whey concentrate; its comparison chart puts protein at 90% of the scoop by weight (27 g in 30 g)
  • Hybrid-Ratio Ion-Filtration (HRI) — the label describes HRI as a hybrid of two isolate purification technologies combined at a specific ratio; the medicinal ingredient panel lists cross-flow ultra-filtered, ion-charged particle-filtered and alpha-lactalbumin-rich whey protein isolates
  • Full amino acid profile on the label — leucine 2,750 mg, isoleucine 1,555 mg and valine 1,607 mg per serving, naturally occurring from whole protein — the label states zero non-protein amino acids
  • Gluten-free — every Canadian IsoFlex label states “Contains No Gluten”
  • About 75 servings — the 5lb tub suits daily use once you have found your flavour

Best for: Adults who want a whey isolate shake with 27 g of protein for 120 calories, mixed with water or low-fat milk; anyone tracking calories and protein who uses a shake every day.

Not ideal for: Anyone with a milk allergy; anyone looking for a high-calorie shake to support a calorie surplus — consider a mass gainer instead.

Ingredients: Medicinal — ISOFLEX® whey protein isolate [hybrid-ratio ion-filtered whey protein isolate (cross-flow ultra-filtered whey protein isolate, ion-charged particle-filtered whey protein isolate, alpha-lactalbumin-rich whey protein isolate)] (Bos taurus — milk), 29.8 g per scoop. Non-medicinal, by flavour — Chocolate: cocoa powder, natural and artificial flavours, guar gum, sunflower lecithin, sucralose, acesulfame potassium. Vanilla: natural and artificial flavours, guar gum, sunflower lecithin, acesulfame potassium, sucralose. Chocolate Peanut Butter: peanut flour, natural and artificial flavours, Dutch process cocoa, sunflower lecithin, guar gum, salt, sucralose, acesulfame potassium. Strawberry includes coconut, and Cookies & Cream includes gluten-free cookie pieces made with sugar and soy lecithin — check the tub for the full list. Allergen Info: Allergens by flavour (Canadian label): Chocolate and Vanilla — contain milk. Strawberry — contains milk and coconut. Cookies & Cream — contains milk and soy. Chocolate Peanut Butter — contains peanut (peanut flour) and milk; some label versions also declare sesame. All flavours are produced in a facility that also handles wheat, egg, peanut, tree nut, sesame, fish, crustacean and shellfish products. Always read the full label of your flavour before use. Suggested Use: Mix or shake 1 scoop of powder with approx. 150 mL (5 oz) of cold water or low-fat milk immediately before consumption. Drink enough fluid before, during and after exercise. Take a few hours before or after taking other medications. Do not use if the inner seal is broken. Always read the full label before use.

Who Is This For?

IsoFlex is for adults who want a straightforward whey isolate shake — 27 g of protein and 120 calories per scoop — after training, between meals or whenever whole-food protein isn’t practical. The 5lb tub gives about 75 servings in five flavours.

Who Is This NOT For?

  • ✗ Anyone under 18 — the label says for adult use only
  • ✗ Anyone pregnant or breastfeeding — the label asks you to consult a healthcare practitioner prior to use
  • ✗ Anyone with a milk allergy — every flavour contains milk (whey)
  • ✗ Anyone with a peanut or sesame allergy — Chocolate Peanut Butter contains peanut, and all flavours are made in a facility that also handles peanut and sesame
  • ✗ Anyone allergic to soy or coconut who is choosing Cookies & Cream (soy) or Strawberry (coconut)
  • ✗ Vegans — whey protein isolate is a dairy ingredient
  • ✗ Anyone who needs a calorie-dense shake for a bulking phase — IsoFlex is 120 calories per scoop

Why Buy From Bulldog Nutrition?

With over 10 years serving supplement customers across Canada and the US, Bulldog Nutrition is an authorized Canadian and US retailer of Allmax Nutrition — a brand founded in Canada. Every IsoFlex tub is sourced directly from Allmax, 100% authentic, and never grey market or counterfeit. Supporting an authorized Canadian retailer of a Canadian brand means your dollars stay in the supply chain they were meant for.

  • ✓ Authorized retailer — authentic products only, never grey market or counterfeit
  • ✓ Ships across Canada and the US — fast, reliable delivery to your door
  • ✓ 10+ years in business — a track record you can rely on
  • ✓ Thousands of verified customer reviews store-wide
  • ✓ Ongoing support available — reach us anytime via email or live chat

Add to cart — shipped fast across Canada and the US.

Shipping Information

Bulldog Nutrition ships across Canada and the United States. Most orders are processed within 1 to 2 business days.

Free shipping is available on eligible orders over $100. Please note that drink cases are excluded from free shipping due to size and weight.

During extreme hot or cold weather, heat-sensitive or cold-sensitive items may be affected in transit. For full details, please review our Shipping Policy.

Product & Site Disclaimer

Website information is provided for general informational purposes only. Product details, images, ingredients, and labels may change without notice, so customers should always review the actual product packaging received before use. For full details, please review our Product & Site Disclaimer.

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Need Help?

For the fastest assistance, please use Live Chat on our website. You can also text SUPPORT to 1-833-497-3885 or use our Contact Us page for order, shipping, returns, and general support questions.

Frequently Asked Questions

How does Allmax IsoFlex compare to other whey isolates like Dymatize ISO 100?
Both are whey protein isolates. Per its Canadian label, IsoFlex gives 27 g of protein and 120 calories per scoop (30 g, or 31 g for Cookies & Cream) from a blend of cross-flow ultra-filtered, ion-charged particle-filtered and alpha-lactalbumin-rich whey isolates, with no whey concentrate. For ISO 100, check that product’s own label — protein, calories and flavours vary by product and flavour. Most people choose between them on flavour, macros per scoop and how it mixes.
Is Allmax IsoFlex gluten-free and suitable for lactose-sensitive athletes?
IsoFlex is gluten-free — the Canadian label states "Contains No Gluten". The label makes no lactose-free or low-lactose claim. IsoFlex is a whey protein isolate with no whey concentrate, but it is made from milk and contains milk (whey). If you are lactose intolerant, check with a healthcare practitioner before use. Anyone with a milk allergy should not use it.
Is Allmax IsoFlex good for cutting or a calorie deficit?
It fits well. Each scoop gives 27 g of protein for 120 calories, with 2–3 g of carbohydrates and 0–1 g of fat and sugars depending on flavour. That makes it easy to add protein while keeping calories in check. One serving is 1 scoop; use it as part of a balanced diet.
Why does Allmax IsoFlex have 27g of protein per scoop?
Each 30 g scoop (31 g for Cookies & Cream) contains 29.8 g of ISOFLEX whey protein isolate, which provides 27 g of protein — about 90% protein by weight, per the label’s comparison chart. IsoFlex uses only isolate, with no whey concentrate. Protein per scoop differs between products, so compare labels when choosing.
Is the Allmax IsoFlex at Bulldog Nutrition authentic?
Yes — Bulldog Nutrition is an authorized Canadian and US retailer of Allmax Nutrition, meaning all products are sourced directly through legitimate supply channels. You are getting 100% genuine IsoFlex — never grey market or counterfeit. Every purchase is backed by over 10 years of authorized retailer status and thousands of verified customer reviews store-wide.

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