Phenocal, produced by Pharmaxa Labs in the United States, is marketed as a weight loss solution that boosts metabolism, curbs hunger, and
Upon even a cursory examination of Phenocal and its ingredients it’s pretty easy to see that Phenocal is not going to be very effective.
While Phenocal may contain a couple of half decent ingredients, the underdosing of them makes it pretty much useless. 5htp and glucomannan for example are good ingredients (which is why they're put on the front of the bottle) the problem is that they're likely in doses at least 5x too small to be effective, which we'll get to in the ingredients section.
There's also quite a lot of reports of Phenocal side effects across review platforms, and whilst our testers didn't experience anything notable it does seem severe gastric distress is common. Although we suppose that is one way to loose weight.
The customer reviews of Phenocal aren’t great, although we’ve seen worse, but the reality is that you’re mostly just paying for an overpriced vitamin d and b supplement.
When you consider the other supplements available at this price point that actually dose their ingredients correctly, we really can’t find a reason to recommend Phenocal over any of it’s much better competitors.
Vitamin D 25mcg - Vitamin D, also known as the "sunshine
vitamin," plays a crucial role in overall health and wellness. Adequate
vitamin D levels have been linked to improved weight control by regulating
insulin and glucose levels.
Vitamin D also increases energy levels, improves muscle function, and promotes
a feeling of fullness.  All in all this is a good ingredient, and considering
the deficiency rates in the US are up to 50% depending on the study you use we are
actually off to a good start with our Phenocal review, unfortunately this is
pretty much where that ends.
B Vitamins (thiamine, folic acid etc) – B vitamins support weight management by boosting metabolism and overall health. It helps convert carbohydrates, proteins, and fats into energy, ensuring optimal bodily functions. Deficiencies in several of these can slow down metabolism, making it harder to lose weight. Although it should be noted that B vitamin deficiencies are relatively rare. They can give you a bit of an energy, which can help if you’re training a lot whilst trying to lose weight. They’re not a bad ingredient, but they are in a lot of much better fat burners at this price point. 
Chromium 100mcg - Chromium regulates insulin levels, improving glucose processing and energy conversion. It also helps reduce cravings and promotes feelings of fullness, leading to reduced calorie intake and weight loss. Studies have shown that supplementing chromium can lead to slightly increased weight loss, and this is pretty much where the positives end for Phenocal. And once again this is in much better fat burners.
Fucoxanthin 10mg - Fucoxanthin, found in brown seaweed, supposedly potential weight loss benefits by decreasing body fat levels. The claim is that it can aid fat breakdown in cells and stimulate thermogenic protein activity, leading to weight loss. Unfortunately there aren’t any human studies to back this up, and the animal studies that Phenocal relies on would suggest you’d need 20 times more of the ingredient for it to actually do anything. 
BioPerine® 2.5mg - BioPerine, derived from black pepper, enhances nutrient absorption, this makes it a fine inclusion for most supplements, but the thing is Phenocal can’t even get this right. You need 5-10mg for it to be effective. Cheeping out on even one of the cheapest and smallest incredients doesn’t look good for their fat burner. 
Proprietary Blend 2.23g – This is where everything goes wrong for Phenocal. We should note that due to US laws ingredients in proprietary blends must be listed from largest to smallest.
Meaning about the only thing in here that can be dosed correctly is green tea leaf powder at 2-500mg. Which is once again in better fat burners that then go on to get more ingredients correct after that. It’s also not the most effective ingredient and normally rounds out the space in other better supplements.
Phenocal's proprietary blend includes the ingredients Green Tea Leaf extract, Glucomannan, L-tyrosine, Chocolate Bean Extract, Hoodia gordonii, Mate leaf extract, Garcinia fruit extract, Green Tea Leaf Powder, L-Tryptophan, CLA, 5-HTP, coleus forskohlii root extract, Evodiamine and B-Phenylethylamine HCl.
Let’s have a look at the ingredients in here that actually work, and how much space you’d need. We’ll give you a clue it’s a lot more than 2.23g.
While some ingredients like Glucomannan effectively suppress appetite you need 2 grams of it as a minimum.  And the most there can possibly be in Phenocal as it's the second ingredient in a 2.2g blend is 1 gram. Realistically it's liikely to be a lot lower than this.
5HTP requires 100mg and whilst it does effectively suppress cravings,  there can’t possibly be enough in here at 12th spot on the size list. The thing is this was even shown in MRI testing when brains were monitored and people were shown unhealthy food before and after in placebo controlled trials, not just self report studies. So, the science is really good for 5htp, making the poor dose in Phenocal even more dissapointing.
L-Tryptophan works in a similar way, but requires at least a 2g.  Which is why most better supplements use just 5HTP in a higher dosage as they have the exact same mechanism.
L-Tyrosine has to be dosed at 100mg/kg of body weight (so for most people. So, 50mg/lb…  for context this is around 7 grams for women and more for men. And whilst there is some evidence to support it’s use, this isn’t particularly great. As we can see that’s going to do nothing.
Chocolate bean extract doesn’t really do very much at all  and Garcinia does have some supporting evidence, but it needs to be dosed at 1500mg  for it to start to be effective. And even then the science is pretty mixed on the matter.
At this point for these ingredients to be effective you can see you’d need a supplement more than 10x the size of Phenocal and the fact is that the only effective ingredients in here for a combined fat burner are under dosed to the point of being useless.
We do like to see glucomannan and 5htp and they are in a lot of the best fat burners avialable, but you can get them in better supplements that dose all their ingredients effectively.
|• Phenocal contains some good ingredients.
|• Most of the ingredients in Phenocal are in a proprietary blend, making it difficult to determine their quantities.
|• The B Vitamins in Phenocal can help with energy levels.
|• Some of the claims made about Phenocal are exaggerated.
| • Glucomannan in Phenocal is an excellent addition for making you feel fuller for longer.
|• Ingredient doses vary between the official website and the Amazon page.
Phenocal is generally considered safe, some reported side effects include
jitters, headaches, trouble sleeping, and upset stomach. Excessive consumption
of fat burners can increase cortisol levels, leading to weight gain, high blood
pressure, and other health issues.
Does Phenocal make your heart race?
Phenocal contains ingredients known to increase heart rate, such as Yerba Mate and green tea extract. While some individuals may experience a fast or racing heart after taking Phenocal, it is not a common side effect.
Does Phenocal affect blood pressure?
Phenocal can potentially affect blood pressure, as some ingredients may have an impact. It is important to monitor blood pressure levels while taking any supplement.
1 - https://ods.od.nih.gov/factsheets/VitaminD-HealthProfessional/
2 - https://pubmed.ncbi.nlm.nih.gov/30074168/
3 - https://ods.od.nih.gov/factsheets/Chromium-HealthProfessional/
4 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7353321/
5 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4025876/
6 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3892933/
7 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5256178/
8 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2908021/
9 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6084775/
10 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7760201/
11 - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3010674/