Updated: 01/12/2018

Carbolin 19 Review - 6 Things You Need to Know


Why is it that so few diet products are backed by science? Let’s find out if Carbolin 19 is one of the good ones. Here at DietSpotlight, we did an in-depth review of the ingredients, side effects, customer-service quality and scientific research. Additionally, we analyzed hundreds of user comments and testimonials. Then, we summarized and condensed to give you the info you need.

Carbolin 19 Readers: Click here to find out why we're giving away samples of our product, Boost.

What is Carbolin 19?

First off, Carbolin 19 ingredients are forskolin 20mg and 1,9-cabonate. Supposedly, it decreases fat mass, increases muscular pump, improves strength gains and helps with muscle building. Simply take one or two capsules per day. The active ingredient, Coleus Forskolii, has been shown to widen blood vessels, lower blood pressure and even treat asthma.

Carbolin 19 is marketed as an “anabolic/lipolytic agent” and was first released around 1999 from Biotest, LLC. It’s sold on the official website for $29.95 and sites like Amazon. We like the longevity of the company and the low price tag, but read on…

Products Similar to Carbolin 19

Power Slim 360 Forskolinread
Forskolin Fuelread
Forskolin Belly Busterread
Boost (Sample offer)read

Lack of Results – “Building Muscle?”

The first concern with Carbolin 19 ingredients was the lack of results. “When we noticed this one included forskolin, we started to pay close attention,” said our Research Editor. “Although research shows it could help with muscle building, this may not always be the case for users.”

One user commented, “So no weight-loss results with this product!”

“Didn’t notice this doing anything even with a strict diet and training protocol,” said another customer.

Some followed the instructions and noticed results while using Carbolin 19. “Used the entire bottle and saw some gains in my chest,” said a customer.

Ineffective Ingredients – “Concerning?”

Another concern mentioned by customers was the ineffectiveness of the Carbolin 19 active ingredient, forskolin. We wanted to see what customers had to say about it. One user mentioned, “Doesn’t actually help you lose weight or bulk up.”

Another person stated, “This product does absolutely nothing for me! What’s the point?”

Although there was mention of Carbolin 19 not working, this isn’t always the case. “Was pleased that Carbolin 19 contained forskolin. It’s a solid ingredient and it works,” reported a consumer.

“This one’s not a miracle pill. You still have to exercise and diet. After doing that, I finally started to increase my mass,” said another.

Our research has shown if there is some particular part of a dietary supplement or workout program that ithat’s quite problematic, like being ineffective, the probability of long-term results is low. This means if Carbolin 19 does not work as expected, this could be a major issue.

Is There Any Real Science?

There is a study mentioned in the product description for Carbolin 19, but the company doesn’t provide any additional details about the study. We do know that forskolin can support weight-loss and testosterone levels, but the research proving it works doesn’t relate to this particular formula. We at DietSpotlight pay close attention to research used to back claims. If there’s no clinical evidence, we become skeptical about it.

What Users Are Saying

“Carbolin 19 works just as described. It’s not going to make you feel buzzed or get jacked in a week, but as it says, it will subtly improve your body composition and improve your recovery, so you can train just a little harder to get better results.”

“Did notice a better pump after workouts, 2 pills per day. 3 weeks of taking it.”

“Didn’t notice this doing anything even with a strict diet and training protocol.”

The Bottom Line – Does Carbolin 19 Work?

Is Carbolin 19 still on your radar? Well, we like that it’s readily available and that we found some positive customer comments, but the lack of research connecting this one to muscle-building leaves us a bit concerned. Especially when it contains a proven ingredient like forskolin. We’re also skeptical about making suggestions due to customer reports of not seeing results and the supplement being completely ineffective.

Are you experiencing symptoms of low testosterone levels? If so, we suggest going with a supplement containing clinically-tested ingredients proven to work and not connected to harmful side effects.

Among the best products we’ve seen this year is one called Boost. The formula consists of nine clinically-tested ingredients that have been shown to help boost test levels, increase energy, help build muscle and strength. There aren’t complaints about harmful side effects and customer comments are showing that people are seeing excellent results.

Also, the company that makers Boost are so confident in their product, they’re offering 2-Week Sample and a 120-day money-back guarantee.

Learn More About Boost »
Carbolin 19 Review
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Carbolin 19

What are the side effects of Carbolin 19?

According to customer comments, Carbolin 19 side effects may include increased heart rate.

What is in Carbolin 19?

Forskolin 20mg and 1,9-carbonate are in Carbolin 19.

How do I know if Carbolin 19 is right for me?

Choosing the right product is the #1 question asked by DietSpotlight readers. We recommend trying any product before buying it and know that finding a product with a sample offer is near impossible - so we created our own product, Boost, with scientifically backed ingredients.

Click here to get your sample of our powerful testosterone booster today.

What is the active ingredient in Carbolin 19?

The active ingredient in Carbolin 19 is forskolin.

Does Carbolin 19 work?

Although the website for Carbolin 19 offers details about the supplement, there are no links to research proving the supplement is effective. There are clinical studies backing forskolin, but the scientific evidence doesn’t relate to this particular formula.

If you want to improve overall results, we suggest combing Carbolin 19 with a supplement like Pronabolin. It contains clinically-tested ingredients that have been shown to work.

How much does Carbolin 19 cost?

One bottle of Carbolin 19 costs $29.95.

How should I take Carbolin 19?

Instructions for the Carbolin 19 website suggest users take one or two pills in the morning, then again around six hours later. It is highly recommended that you do not exceed four pills in a 24-hour period.

How many capsules are in a bottle of Carbolin 19?

There are 60 capsules included in a bottle of Carbolin 19.

Who are the creators of Carbolin 19?

The distributor of Carbolin 19 is Biotest LLC.

Does Carbolin 19 come with a guarantee?

Carbolin 19 comes with a 100% money back guarantee.


Previous Carbolin 19 Review (Updated January 1, 1970):

What You Should Know

Carbolin-19 is a bodybuilding supplement produced by the BioTest company. It claims to be an anabolic bridge, working just as well as the illegal steroid Anavar. Though the primary focus is the formation of lean muscle mass, it also is thought to help with fat loss. This review will take a closer look at the product to determine if there is any value to potential consumers.

List of Ingredients

Carbolin-19 contains one ingredient that we know of: colforsin 1,9-ethylcarbonate. We were not able to locate a supplement facts label to confirm this is the only ingredient.

Product Features

Colforsin 1,9-ethylcarbonate comes from Forskolin. Forskolin is the well known compound in a medicinal herb known as Coleus Forskolin. The plant has been used to treat several conditions including asthma, insomnia, and heart disease. It is only in recent years the plant has come to light with weight loss benefits. ForSlean is the patented name for the standardized Coleus Forskolin extract many weight loss supplements use. It claims to not only be a powerful fat burner, but a muscle builder, as well. There is research to support it, but the Biotest company seems to swing it in their favor, leaving out the negative information. The study supports ForSlean, which is not the same as the compound in this product, as a chemical change has been made to the Forskolin in this product.


  • This supplement is available from a wide variety of merchants online.
  • This product comes with a money back guarantee.


  • Though this is a fat burner, it also builds muscle and is therefore targeted more to bodybuilders than casual dieters who just want to lose a few pounds.
  • Without a full ingredients list disclosed, we cannot tell if there are other ingredients in the formula, or how much of the active ingredient there is.
  • The clinical evidence the company cites is for a different chemical compound using Forskolin, and therefore cannot be accurate.
  • There are not free trials of this product.


While this product certainly looks good on the surface, especially for those who are more about building muscle and toning the body rather than dropping fat, we do not recommend it. Though technically a proven fat burner, the company has misleading research and product claims, more than likely produced to boost sales rather than provide honesty to customers. Consume feedback shows a mixed bag of results on this one, so we advise those who do try this product to proceed with caution. We encourage you to continue your research until you find a product that contains clinical proven amounts of clinically proven ingredients and use it with a balanced diet and regular exercise program for the best weight loss results.

Summer Banks Dietspotlight Author
About the Author:

Summer Banks, Director of Content at Dietspotlight, has researched over 5000 weight-loss programs, pills, shakes and diet plans. Previously, she managed 15 supplement brands, worked with doctors specializing in weight loss and completed coursework in nutrition at Stanford University. full bio.

3 Carbolin 19 Reviews

  • Enrique Gutierrez (Verified User)

    Almost done with my second bottle and haven’t see any changes..

  • Justin

    I doubt its FDA approved, it also doesnt do anything at all except recide your hairline more… made it about half way through one bottle and im done

    • Maribel (Editor)

      Sorry Justin that it didn’t work for you. But, hang in there. Don’t let this affect your motivation. There are products that can and do work! Pronabolin, for instance, has clinically tested ingredients and can improve your testosterone levels. Hope you give it a try…