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Yeast Protein Isolate
Spacemilk is the first product of its kind. Spacemilk provides 20 grams of complete protein per serving without allergens, bloating, or unnecessary fillers. It is made from non-GMO baker’s yeast, ensuring better digestion and a more sustainable protein source.
Gut Friendly
Sugar Free
No Allergens
No Artificial Ingredients
Third-Party Tested
Save More with Every Pack
Chocolate Mousse
Unflavored
Vanilla Shake
Buy 2+ Bags — Unlock 35% Off Your First Order
Discount applied automatically at checkout.
Our Key Statistics
Real results from real customers.
PDCAAS Score
1.0 Perfect Protein Score The highest possible digestibility rating. Same as whey and eggs.
Cleaner
Than pea protein. Third-party tested. 0.016 ppm vs industry average 0.64 ppm.
Pesticides Detected
77 Pesticide residues tested. All clean.
4.9
rating out of 5.0
From 436 verified reviews.
"I've tried every protein powder on the market. Nothing has come close to this. No bloating, no gritty texture, and I finally stopped waking up with that heavy feeling in my stomach. I'm never going back to whey."
SM
Sarah M.
Verified Buyer
Why We Built Spacemilk
I was taking protein every day and feeling terrible every afternoon. Bloated, heavy, uncomfortable. I assumed that was just how protein worked.
Then I started looking at what was actually in my shakes. The heavy metal contamination data shocked me. The allergen profiles were worse than I imagined. And plant protein? Incomplete, gritty, and loaded with antinutrients.
I discovered yeast fermentation. A process that creates a complete, allergen-free protein with none of the contamination issues. If this existed, why wasn't anyone making it properly?
So we built Spacemilk. Every batch is independently tested. Every certificate is published. No hidden formulas. No compromises.
Your Protein Is Working Against You
If you've ever finished a shake and spent the afternoon feeling bloated, heavy, or uncomfortable, that's not a coincidence. That's your protein.
Whey bloats. Plant protein disappoints. And most brands are hiding what's really in their formula.
You deserve better than that.
Whey
Bloating, lactose discomfort, and digestive stress in 1 in 3 people.
Plant Protein
Often incomplete, gritty, and loaded with antinutrients that block absorption.
Both
Industry-average heavy metal contamination is 15x above the daily safe limit.
Protein That Finally Works With Your Body
Clean fermentation. Complete nutrition. Third-party verified - every single batch.
Zero Bloating
A neutral pH of ~7 means no digestive stress, no discomfort, no afternoon regret.
Complete Protein
Perfect 1.0 PDCAAS score. All nine essential amino acids. Matches whey nutritionally.
Zero Heavy Metals
Below Prop 65 daily limit, third-party tested every batch.
Sustained Satiety
Slow-digesting protein keeps you full and focused for hours.
100% Animal-Free.
100% Conscience-Clear.
No arable land. No animal inputs. No farming. Clean fermentation from start to finish.
Most Brands Hide Their Numbers. We Publish Ours.
Safe Limit
7.7 mcg
Vegan
6.3 mcg
Whey
0.47 mcg
Spacemilk
Based on independent third-party heavy metal testing. Daily safe limit of 0.5 mcg based on California Prop 65 standards. Data represents contamination levels across leading brands in each category.
Every batch of Spacemilk is independently tested for heavy metals, pesticides, and microbial safety. View your results below.
100% Natural Ingredients. Nothing Hidden.
No allergens. No fillers. Nothing artificial. Every ingredient listed and explained.
Yeast Protein Isolate
Complete, allergen-free protein from yeast fermentation.
Konjac Gum
Stop snacking. Start feeling in control.
Prebiotic fibre that supports digestion and gives creamy texture.
Sunflower Lecithin
Relief within 1 hour of your first dose
Supports cell health, keeps every serving silky smooth.
Salt
Relief within 1 hour of your first dose
Enhances flavour and supports hydration.
Organic Alkalized Cocoa
No more discomfort, gas, or sluggishness
Real cocoa for rich chocolate taste without bitterness.
Organic Monk Fruit Extract
Target stubborn abdominal weight
Zero-calorie natural sweetness. No sugar, no aftertaste.
Thaumatin
No crashes. No brain fog. Just you.
Natural sweetener from the Katemfe fruit. Zero sugar. Rich taste.
Organic Vanilla Flavor
No crashes. No brain fog. Just you.
Deepens and balances the chocolate notes.
Science-Backed
Most Proteins Talk Big. Spacemilk Proves It.
No Bloating
Gut-Friendly
Allergen Free
Complete Protein
Ultra-Low Heavy Metals
Zero Pesticides
No Farmland Required
Third-Party Lab Tested
Spacemilk
Whey
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Plant Protein
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A Cleaner Way to Make Protein
Step 1:
Cultivate
Baker's yeast grown in stainless-steel fermenters, fed plant-based sugars. No animals. No farms. No contaminants.
Step 2:
Isolate
Natural food enzymes break down cell walls, releasing purified protein inside. No harsh chemicals.
Step 3:
Purify
High-speed centrifugation. Protein washed, pasteurised, and gently dried into ultra-pure powder.
What to Expect And When
DAY 1
No bloating. No digestive stress. Just clean protein.
You'll have your first shake and wonder why you waited this long.
1
Protein Absorption Rate
+80%
Digestive Comfort
+85%
2
WEEK 1
Recovery feels faster. Energy stays steadier through the day.
You stop dreading your afternoon slump.
WEEK 2
Muscle fullness and definition start to shift.
People notice before you mention it.
3
Muscle Recovery Efficiency
+90%
Sustainability Impact
+95%
4
MONTH 1
Your protein is working — no compromise, no side effects.
You feel genuinely confident about what you're putting in your body.
MONTH 2+
Better composition, better recovery, better baseline.
This is what clean fuelling every day feels like.
5
Body Composition Improvement
+88%
DAY 1
No bloating. No digestive stress. fust clean protein.
You'll have your first shake and wonder why you waited this long.
1
Protein Absorption Rate
+80%
2
Digestive Comfort
+85%
WEEK 1
Recovery feels faster. Energy stays steadier through the day.
You stop dreading your afternoon slump.
WEEK 2
Muscle fullness and definition start to shift.
People notice before you mention it.
3
Muscle Recovery Efficiency
+90%
MONTH 1
Your protein is working — no compromise, no side effects.
You feel genuinely confident about what you're putting in your body.
4
Sustainability Impact
+95%
MONTH 2+
Better composition, better recovery, better baseline.
This is what clean fuelling every day feels like.
5
Body Composition Improvement
+88%
Protein That Finally Feels Right
MT
Mark T.
Verified
AK
Amanda K.
Verified
DL
David L.
Verified
JR
Jessica R.
Verified
CW
Chris W.
Verified
LM
Lisa M.
Verified
- NWNancy W.Verified BuyerReviewingYeast Protein IsolateI recommend this productRated 5 out of 5 starsYesterdaySpacemilk
Love the taste! Better than all the others I’ve tried.
Hopefully they’ll be more choices and rewards program in the future.
- TWTimothy w.Verified BuyerReviewingYeast Protein IsolateI recommend this productRated 5 out of 5 starsYesterdayChocolate spacemilk
Great flavor and a unique alternative to traditional protein powders.
- EJErika J.Verified BuyerReviewingProtein | Vanilla ShakeI recommend this productRated 5 out of 5 starsYesterdaySits quietly
I don't notice problems with whey, but I DO notice that even on mornings when my gut is feeling a bit iffy (horse show nerves, etc), the Spacemilk sits very quietly, is very easy to drink and doesn't cause any upset. I've had major bariatric surgery (duodenal switch), so protein supplementation is not optional for me. Spacemilk is a little expensive for everyday (I need 120 g), but it sure is nice when I need it. I told my bariatric doc about it so she would be able to share the resource with other patients. She was excited to have another option for people.
- KBKathy B.Verified BuyerReviewingYeast Protein IsolateI recommend this productRated 5 out of 5 starsYesterdayDelish!!
This is by far the best tasting protein powder I have ever drank. No weird after taste. Also it mixes well in my coffee. It doesn’t get all clumpy, gritty and nasty!! I get higher grams of protein in one scoop than the other that requires two scoops and then it tastes sickening sweet. Also less calories!! What’s not to love about this product!!
- NSNancy S.Verified BuyerReviewingYeast Protein IsolateI recommend this productRated 5 out of 5 stars2 days agoChocolate Mousse
Love the flavor and feeling of no bloating.
Try It Completely Risk-Free
If Spacemilk isn't the cleanest, most comfortable protein you've ever tried, contact us within 30 days. We'll make it right — no awkward questions, no returns needed. We take all the risk so you don't have to.
30-Day Satisfaction Guarantee
4.9/5 from 436 Customers
Got Questions? We've Got Answers.
What makes Spacemilk different?
Spacemilk is made through yeast fermentation - not from dairy or plants. That means it's naturally allergen-free, ultra-clean (heavy metals 15x below industry average), and 100% pesticide-free. Every batch is independently tested and the results are published on this page.
Is it a complete protein?
Yes. Spacemilk has a perfect 1.0 PDAAS score and contains all nine essential amino acids - nutritionally equivalent to whey.
Will it cause bloating?
No. Spacemilk has a neutral pH of ~7, making it exceptionally gentle on your digestive system. No lactose, no antinutrients, no digestive irritants.
How much protein per serving?
20g per serving, 100-120 calories depending on flavour.
Is it vegan and allergen-free?
Yes. 100% animal-free, dairy-free, gluten-free, soy-free.
How long until I see results?
Most people notice improved digestion from the first serving. For muscle and recovery improvements, consistent use for 2-4 weeks shows the clearest results.
Can I pause or cancel my subscription?
Yes, anytime. No fees, no penalties. You're in complete control.
What's the returns policy?
30-day satisfaction guarantee. Contact us within 30 days - we'll make it right.