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Master Supplements

Theralac®, Broad Spectrum Probiotic, 30 Capsules

4.8 · 321 reviews
3,978 ₽

Gluten Free Vegan GMO Free Supports Regularity 5 Probiotic Strains Patented Prebiotic Deep Delivery Dietary Supplement Theralac® is a high potency probiotic supplement protected by seven 7 U.S. patents covering acid-proof delivery and prebiotic stimulation. Each batch is laboratory tested to meet strict quality control standards with results posted online. Guaranteed at the time of expiration when kept refrigerated.

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Gluten Free Vegan GMO Free Supports Regularity 5 Probiotic Strains Patented Prebiotic Deep Delivery Dietary Supplement Theralac® is a high potency probiotic supplement protected by seven 7 U.S. patents covering acid-proof delivery and prebiotic stimulation. Each batch is laboratory tested to meet strict quality control standards with results posted online. Guaranteed at the time of expiration when kept refrigerated.

Customer reviews

5.0
verified purchase

very good high-quality ingredient for this probiotic supplement. It’s great for gut health and for your intestines and for your Gut Microbiome diversity the packaging is really good. It has many benefits. The size is really good. I recommend a probiotic but do your research and ask professional.

8/7/2024
5.0
verified purchase
Reliable benefits especially when taken, paused and resumed.

Iherb has the best price on Theralac Probiotics found online. when automatically scheduled shipment. It's very convenient that Iherb also allows the subscription to be canceled if desired. It arrived in packaging that was minimal as possible yet kept the product safe and dry. The expiration date is far enough that there's plenty of time to use product.

6/14/2026
5.0
verified purchase
Love this probiotic

Been taking for years - it is a great effective probiotic that you can notice the results. Changed probiotic and noticed the difference so I am once again back on Theralac and this is when I found IHerb - The price at IHerb has one of the best prices for the product.

2/7/2026
5.0
verified purchase
Very good

A very strong formula. Very good effect. I will buy more. Excellent quality

10/30/2025
5.0
verified purchase
Excellent product!

I absolutely love this brand of probiotic! It is excellent quality and I always come back to it when I change up. I highly recommend!

7/25/2025
4.0
verified purchase
Good product

Probiotics are hard to tell if their working or not. I have IBS and Celiacs. I can tell you that I have introduced different foods into my diet and I have had very mild if any reaction. This is the only thing different that I'm taking. I would say this has helped my stomach and digestion.

7/6/2025
5.0
verified purchase

Been reading good reviews about this supplement. Ingredients are of great quality. I’m just not sure if it’s as potent as it wasn’t kept refrigerated during transport.

5/27/2025
5.0
verified purchase
Improves my Digestion without Side Effects

I tried Theralac on my doctor's recommendation after having tried other Probiotics which helped with my constipation but also seemed to upset my stomach. Theralac is awesome, because it helps me and doesn't cause any of the issues I had with other brands.

4/28/2025
4.0
verified purchase

Theralac probiotic is a game-changer for gut health, effectively modulating the gut microbiome and providing noticeable relief from digestive discomfort. Its unique formulation promotes intestinal epithelial renewal, bolsters intestinal barrier function, and supports overall immune response. This probiotic stands out for its ability to deliver live cells to targeted sites in the gut, ensuring optimal bioaccessibility and bioavailability. I highly recommend Theralac for anyone seeking a reliable and comprehensive probiotic solution.

2/8/2025
5.0
verified purchase

Master Supplements' Theralac has significantly improved my digestive health since I started using it. With 30 billion CFU per capsule, I appreciate the potency and broad spectrum of probiotics it offers, helping to restore balance in my gut. I love that it's shelf-stable, so I don’t have to worry about refrigeration, making it convenient for travel. Overall, I've noticed a positive impact on my overall well-being, and I feel more energetic and less bloated throughout the day.

10/25/2024