Product Description
You hit your protein number every day, 120 grams, 130 grams, sometimes more on a big training day, and still feel flat two days after a hard session. What you eat and what your muscles get aren't the same thing, and the difference comes down to digestion, not intake.
Thorne's Protein Optimizer is designed to help your gut pull more usable amino acids out of every meal, pairing a five-strain probiotic blend with a shelf-stable Bacillus coagulans strain in one daily capsule.
More Amino Acids From the Protein You Already Eat – Instead of adding another protein source, this capsule helps your digestive system break down and absorb more of what you're already eating, so a bigger share of that post-workout shake or dinner chicken breast reaches your muscles.
Fewer Gut Issues During Heavy Training Blocks – High-protein diets put real stress on digestion, and this blend works alongside your body's own bacteria to ease the gas, bloating, and sluggish digestion that show up when training volume and protein intake both climb.
One Capsule That Travels With You – Both probiotic components are shelf-stable, so the capsule holds up in a gym bag or travel kit through a training camp or race week, unlike many probiotics that need refrigeration to stay effective.
The formula centers on two components working through the gut-muscle axis, the connection between digestive health and how well your body builds and repairs muscle tissue. The Mycohsa blend combines five organisms, including Saccharomyces boulardii along with strains of Lactobacillus and Bifidobacterium, plus a natural amylase enzyme for starch breakdown. Bacillus coagulans SNZ 1969 adds a spore-forming strain built to survive stomach acid and reach the intestine intact. Together the two blends deliver a minimum of three billion active cultures per capsule.
How to Use Protein Optimizer
Dose: One capsule daily with a meal.
Take it alongside the meal where you eat the most protein that day, like a post-workout shake or dinner, since that's when the digestive support has the most work to do.
- Gluten free
- Nut free
- Sport Tested: NSF Certified for Sport®
Supplement Facts
30 Servings
Serving Size: 1 Capsule
Serving Per Container: 30
| Amount Per Serving | ||
|---|---|---|
| % Daily Value* | ||
| Mycohsa™ Probiotic Blend† 21mg 1 billion CFUs | ** | |
| Saccharomyces boulardii 16mxg™ | ** | |
| Lactobacillus acidophilus 16axg™ | ** | |
| Lacticaseibacillus rhamnosus 18fx™ | ** | |
| Bifidobacterium breve 19bx™ | ** | |
| Amylase | ** | |
| Bacillus coagulans SNZ 1969®†† 20mg 2 billion CFUs | ** | |
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Daily Value (DV) not established
Always Happy Promise: Don't like a product? Tell us within 30 days of receipt and we'll make it right and make you happy. Here at The Feed, we want you to love your experience and the sports nutrition products you purchase. If, for any reason, you are not satisfied with your nutrition specific purchase, tell us.
We do not accept returns on food items that have been opened, but we will issue a store credit if you are unsatisfied. In the event of a return, you must first contact us before sending back a return shipment.
Consumable products over $40 receive a 50% store credit. This includes specialty nutrition products such as ketones or supplements/vitamins.
Thorne Protein Optimizer FAQ's
Everything you need to know about Thorne Protein Optimizer.



Eating enough protein and actually absorbing it aren't the same thing. This capsule doesn't add more protein, it helps your gut pull more usable amino acids out of the protein you're already eating, so more of that post-workout shake or dinner reaches your muscles instead of passing through.
That's part of what it's built for. High-protein diets put real stress on digestion, and this blend works alongside your body's own bacteria to ease the gas, bloating, and sluggish digestion that tend to show up when training volume and protein intake both climb.
The Mycohsa blend combines five organisms, including Saccharomyces boulardii, Lactobacillus, and Bifidobacterium strains, plus a natural amylase enzyme for starch breakdown. Bacillus coagulans SNZ 1969 is a spore-forming strain built to survive stomach acid and reach the intestine intact — together they deliver a minimum of three billion active cultures per capsule.
No refrigeration needed. Both probiotic components are shelf-stable, so it holds up in a gym bag or travel kit through a training camp or race week, unlike many probiotics that lose effectiveness without a fridge.
Take one capsule daily with the meal where you eat the most protein that day, like a post-workout shake or dinner. That's when the digestive support has the most work to do.