We’ve heard a lot of buzz about Think Thin’s protein bars lately, so we decided to take a closer look. We did one of our in-depth reviews and examined the ingredients, side effects, clinical research, and customer-service quality. We followed that up by surveying scores of consumer comments on the web. Then, we summarized and condensed our findings here to give you all the info you need.
What are Think Thin Bars?
Let’s get started. Think Thin protein bars are essentially a meal replacement product in the form of a snack bar.  They don’t have to be used as such, but the 20 g of protein may be able to get you through breakfast. The full ingredient list is Vitamin A, Calcium, Calcium Caseinate, Whey Protein Isolate, Soy Protein Isolate, Hydrolyzed Collagen, Maltitol, Cocoa Butter, Chocolate Liquor, Calcium Carbonate, Dairy Oil, Lecithin, Vanilla, Hydrogenated Starch Hydrolysate, Glycerin, Peanut Butter, Peanut Flour, Natural Flavor, Salt, Mono and Diglycerides, Lecithin Emulsifiers, Tricalcium Phosphate, Vitamin C, Vitamin E, Niacin, Iron, Zinc, Pantothenic Acid, Vitamin D, Vitamin B6, Copper, Riboflavin, Thiamin, Folic Acid, Biotin, Iodine, and Vitamin B12.These contain no sugar and are gluten free, so they are intended to be a healthy alternative to regular snacking. One plus is that they are easy to consume on the go or in the office.
Think Thin bars seem to be the first item that got Think Products started back in 2000. The bars are available in health stores and on its official website. We like the longevity of the company, and the reports of it tasting good, but read on…
Gastric Side Effects – “Are They Worth the Bloating?”
After looking through reviews, our first concern is with Think Thin bars side effects. “If you regularly eat them as an alternative to meals or unhealthy snacking, your body with undoubtedly appreciate the reduction in sugar,” said our Research Editor, “but the artificial sweeteners can have a negative effect on your stomach.” 
“A girlfriend of mine told me that these bars caused her excessive flatulence. I didn’t believe her till I tried one…,” said one user.
“Since I have been eating these, I notice major gas issues, bloating and minor diarrhea. I do not have a lactose allergy as far as I know since I can eat dairy problems without these symptoms,” said another.
Another Concern – “High Calorie Count”
Another fact that we found to be surprising was the relatively high calorie count.  “Too dense and calorie-laden,” said one customer online.
“These bars are rather high in calories, and I did not like the texture,” said another. 
“At 230 calories per bar (with 8g of fat – 12% of DV), you may ‘think thin’ all you want, it’s just not gonna happen,” said one person.
Our research over the last few years has shown that if there is a significant drawback or two in a product, the likelihood of long-term success is slim. If you begin experiencing gastric side effects from the sugar substitutes and protein or you need to cut down on your calorie intake, you should carefully consider whether these bars are the right choice.
The Science – “Any Real Proof?”
From a scientific perspective, the sugar substitute maltitol isn’t as bad as other choices.  The National Library of Medicine has a number of published studies pointing to gastrointestinal side effects related to maltitol, but the flatulence and abdominal pain are more discomforts than dangers.  The high calorie count, however, doesn’t make these a friend to dieters. Losing weight is a simple process: burn more calories than you consume.  ThinkThin bars seem more suitable to athletes needing the high-protein impact rather than to average people trying to burn a few pounds. 
The Bottom Line – Do Think Thin Bars Work?
Here’s the gist: We like Think Thin’s longevity in the market and the positive feedback we saw online about the taste, but we have reservations about the bars as they relate to weight-loss. The high calorie count could be a detriment to dieters, and the sometimes-intense abdominal discomfort associated with that much protein and maltitol may discourage someone trying to trim down. 
If you are trying to lose a few pounds or get a little bit more trim, you should probably look for a product that won’t make you gassy and bloated. Also, your supplement shouldn’t add to your daily calorie intake.
Among the best products we’ve seen in 2016 is one called Leptigen. It’s a supplement that blends four powerful ingredients together in a proprietary formula shown to possibly help burn fat and boost metabolism. Better yet, each ingredient is clinically studied. Online reviewers are thrilled with its performance.
There is currently a Special Trial Offer, which goes a long way in showing that the company stands behind its product.