Based on 41 reviews
pro boost 10

Just great ,am pleased

Pro oost is amazing

I had lyme and Provoost knocked back and virus that came along. I've used it ever since - I'm never without a box at my house.

ProBoost Thymic Protein A: 30-ct Box

Did you change your formula? Both my old red packets and the new TPA packets say they contain 4 mcgs, however the TPA packets seem like they contain far less product. Love the results of ProBoost and believe it has actually allowed me my life... but I really want to be able to trust your representation of the product... please explain how less product has the same TPA? Both packaging packets are the same size and I took into consideration that they were made a little differently when I compared the packets, but it just doesn't seem reasonable that they could both contain the same mcgs if there was no change in the formulation. Please explain.

Hi Linda. First of all, thank you for being a part of the ProBoost family and for taking the time to write a review. We appreciate all of the feedback we get, both positive and constructive!

Rest assured, we have not changed our blending formula for over 25 years, so you can be confident that what is in your packets today is nearly identical to what was in it for all previous production lots that you've purchased with us.

One minor upgrade was made recently to the maltodextrin: we now use pharmaceutical-grade malto, whereas we use to use food-grade, it also dissolves faster than the previous brand. This change was made in early 2022.

As for the formula and the amount of powder in your packet: Every production lot of ProBoost powder is blended into a consistent bulk powder using a ratio that ensures every 0.65 grams of powder contains AT LEAST 4 mcg of Thymic Protein A and every packet is then individually filled and weighed to make sure that there is no less than 0.65 grams of powder. These fill machines typically have an error margin of 10% but since our weights and measures are so small, that error margin can go up to 15%. However, that error margin only happens ABOVE the 0.65 gram minimum fill weight. This means that each packet will contain somewhere between 0.65-0.75 grams of powder.

It's very possible that previous production lots were filled on the higher side of that error margin (meaning you'd get more than the 4 mcg of TPA) and the packets you're currently using fall closer to the standard measurement.

With all of that said, errors still do happen, and if you feel strongly that the powder in your packets is less than what it should be, you are more than welcome to return the package and we can send a replacement. As a general idea of what 0.65 grams of our powder equates to, it should be close to a 1/4 teaspoon of powder.

Hopefully this information helped to answer your questions and alleviate any concerns. If you have further questions, please feel free to reach out directly at

Thank you!

Great product

It does exactly what it says it will do

I can’t say since it isn’t enough time.

ProBoost Thymic Protein A: 30-ct Box

ProBoost Thymic Protein A: 60-ct Pouch

It seems to be working good so far for our kitty!

Instead of one box a month, I need to order 2 boxes!
Thank you!

Good product

I have been taking ProBoost for years, at onset of flu symptoms. I have not gotten very sick. All mild cases.

Lyme Syndrome sucks.

Only good thing about Lyme syndrome is that marketers have a field day.

Works great

Offers an energetic boost that isn’t like a caffeine overdose. I notice clearer brain functioning. Tastes pretty good too.

ProBoost Thymic Protein A

Love this!

I’ve been using Proboost Thymic Protein A for 2 months and j take it immediately after my hard workouts when I’m my immune system is compromised! I have noticed not only have I stayed healthy while teammates got sick but I feel like I’ve been recovering faster as well! 🙏🏼🙌🏼

Bought for my cat.

ProBoost Thymic Protein A


Great for my kiddos! I love the packets and the potency! Excited for better immunity!

Keeping me Healthy!

I’ve been taking ProBoost for quite a while now, and I believe this is why I haven’t gotten sick. I keep waiting to get COVID but have not gotten it yet and I’m not vaccinated. I’ve been taking one a day and if I’m not feeling well or am traveling, I will take two…one in the morning and then in the evening.

ProBoost 1 "Orange Burst" Tablets
Kara Barrett
Kept our kids healthy when they started to get sick!

Our kids started school and started to feel under the weather after just a couple days. We double downed on their ProBoost and they both were back to being 100% in no time. :)

A Great Product If You Have COVID

An easy-to-use product at a decent price. I prefer the ProBoost packets but make use of the orange tablets when I am on the go. Really helped me improve my immune response. I highly recommend ProBoost Thymic Protein A.

ProBoost For FIP Cats

I am treating my cat for FIP and I use ProBoost to help boost his immune system. His bloodwork had improved since using it.

So far so good

I use this for my cats, and it seems to help them quite a bit. Thank you!

ProBoost 1 "Orange Burst" Tablets
Ian White
Important part of my healthy lifestyle!

Just love everything about this product. I’m a boxing coach and a health “fanatic” and this is a big part of my health plan!

Seriously everyone needs this

I had gotten Covid and tried this product and man it turned me around! Within 24hrs I started feeling better.. one day I forgot to take it and I noticed the difference! I know they can’t claim anything for covid but I can! I have more energy , my stomach issues have gotten better and I feel an overall wellness . Now I don’t know if they have claimed this but I also notice I crave healthy foods ! I think having a balanced gut and body , you only want good things in it. My sugar cravings have dropped drastically too!
Love love love this product!

P. Johnston