Animal Flex Review: Don’t Buy Before You Read This!

Expert rating: stars-icon     By Natalie K (Senior Reviewer) November 24, 2023       Advertising Disclosure

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 What is it?

Animal Flex is a joint health supplement that is specifically formulated for extreme athletes. It’s multi-pill packets are designed to provide joint lubrication and cushioning for weight lifters, long distance runners, and other individuals that are particularly hard on their connective tissues. Their website says that Animal Flex is not just an anti-inflammatory pain reliever, as many joint supplements are, but rather it provides the nutritional support necessary to build stronger and healthier connective tissues.

Our panel of experts recommends Flexitrinol for long-term joint support. Their formula reduces inflammation and helps keep joints lubricated and pain free. Click here to see what makes Flexitrinol so effective.

Animal Flex Ingredients and Side Effects


Vitamin C Vitamin E Zinc Selenium Manganese
Glucosamine MSM Ginger Turmeric Flaxseed Oil

 Vitamin C: One of the most important chemicals to the body’s immune system, skeletal health, and general wellbeing. There are no serious side effects associated with vitamin C.

Vitamin E: Another main building block of the body. Vitamin E is key to skin, bone, and hair health and also plays a role in mood stabilization.

Zinc: A metal that is considered one of the body’s essential trace elements. It is an important part of our immune function, blood clotting, and thyroid function. There are some risks associated with elevated zinc levels, including:

  • Anemia
  • Loss of smell
  • Fever
  • Stomach pain
  • Fatigue

Selenium: A mineral that is responsible for a number of basic bodily processes that has shown application in treating atherosclerosis, osteoarthritis, and macular degeneration. There are no short-term consequences from taking selenium, however doctors recommend against long-term or regular ingestion. Selenium can reach toxic levels in the blood and have consequences like:

  • Diabetes
  • Hair loss
  • White streaking on fingernails
  • Nail inflammation
  • Garlic breath
  • Tremor
  • Liver problems
  • Kidney problems

Manganese: A mineral found in nuts and green vegetables that’s one of the body’s essential nutrients. It is an important part of cholesterol regulation, carbohydrate processing, and bone formation. The body needs manganese to function properly.

Glucosamine: One of the most effective additives for joint health products currently on the market. Glucosamine is an important part of the body’s ability to grow and repair cartilage, the main component of your joint tissues. There are no serious negative side effects associated with glucosamine.

MSM: Another popular joint supplement additive. MSM is useful as an anti-inflammatory and has been part of treatments for osteoarthritis, bursitis, and tendonitis. There are no serious side effects associated with MSM.

Ginger: A root traditionally used to flavor food or as a scent additive for soaps, cosmetics, and other products. Ginger has also been used as a health product by some cultures, however western science has not studied its medicinal applications as extensively as one would hope before recommending it as a daily supplement. Some side effects that may be associated with ginger include:

  • Heartburn
  • Diarrhea
  • Stomach discomfort
  • Disruptive flatulence

Turmeric: An herb used in Ayurvedic medicine as an anti-inflammatory agent that is also the spice that gives curry its flavor. There is little clinical data available about the medicinal effects of turmeric, however it has been used to treat arthritis, heartburn, Crohn’s disease, and ulcerative colitis. Side effects that may be associated with turmeric include:

  • Upset stomach
  • Nausea
  • Diarrhea
  • Dizziness

Flaxseed Oil: A source of polyunsaturated fatty acids, which may help lubricate joints and reduce inflammation. There are concerns currently that long-term usage of flaxseed oil may increase the risk of prostate cancer in men, and daily intake over 30mg may cause digestive disruption.

Click here to see a list of the top joint health supplements on the market today.

Animal Flex Quality of Ingredients

Animal Flex’s ingredient list is somewhat mixed in terms of quality. They include a number of highly recommended joint health additives, such as glucosamine and MSM, however they also include a number of minerals and herbs that are not really recommended for daily use.

Animal Flex’s packets do not themselves contain toxic levels of zinc, selenium, and flaxseed oil, however they put all users at a risk for exceeding their upper limit from food and other vitamins and supplements.

Our panel of experts also does not recommend that men consume any supplement that contains flaxseed oil until there is more concrete data about its connection to prostate cancer.

Click here to learn more about which joint health supplements are the most effective for increasing flexibility and mobility.

The Price and Quality of Animal Flex

Animal Flex is available through their website, and they have only one pricing option available:

  • 1 44-count box of Animal Flex joint protection complex packets: $49.95.

Each packet contains four different pills formulated for repair, lubrication, soreness, and overall wellness support, and averages out to cost just over a dollar a day. This make Animal Flex about average in terms of cost when compared to similar formulas.

Follow this link to see the list of the safest and most effective joint health supplements available over the counter.

Business of Animal Flex

Animal Flex is made by a company known as Universal Nutrition, a manufacturer of nutritional supplements for athletes. Their website lists their contact information as:

Phone Number: (800) 872-0101

Address: 3 Terminal Road

New Brunswick, NJ 08901

Email: [email protected]

Universal nutrition currently has an A- rating with the Better Business Bureau. There are currently several formal complaints filed against them, and they were sued in 2024 and lost for including unlisted additives in their supplements.

To see which joint health supplements performed the best in our experts’ independent trials, click here.

Customer Opinions of Animal Flex

Online reviews were somewhat positive, with a number critical responses mixed in. Typical complaints were similar to these:

“Took these packets for a few weeks and I still had pain in the same spots.”

“I got sick of taking so many pills every day and not seeing any results, so I switched to a one-a-day that worked far better.”

The majority of the complaints were regarding product ineffectiveness, however there were also complaints about the price and the company’s reputation.

Follow this link to see the list of all the best joint health supplements currently available without a prescription.

How Does Animal Flex Compare?
  • Product Name
  • User Rating
  • Good Company Reputation
  • Quality Ingredients
  • Money Back Guarantee
  • Animal Flex
  • 34/100
Conclusion – Does Animal Flex Work?

In general, Animal Flex seems to be a relatively effective joint health supplement. It uses some traditionally effective ingredients like glucosamine, MSM, and vitamin C that are known to help maintain healthy cartilage and reduce inflammation.

They also utilize quite a few unproven ingredients that are relatively untested. The consequences of long-term daily use of some of the herbal supplements like turmeric and ginger are not known at this time, making them a risk.

Lastly, there are too many ingredients in Animal Flex that can have potentially negative consequences for our panel of experts to feel comfortable recommending the product to our readers, especially men who may be at an elevated risk for developing prostate cancer.

Our team currently rates Flexitrinol as the top joint health supplement on the market. Flexitrinol uses safe, proven ingredients to naturally boost collagen and hyaluronic acid production, increasing flexibility and range of motion. Click here to learn more about the science behind Flexitrinol’s success.

2 Responses to Animal Flex Review

Peter says:

I’m 40 yo sport enthusiast. I had some problems with joints, pain that has extended while I started do gym. After using Flex Animal for two months all problems went away. For me it works perfect.

Moises says:

I am a 49 years man who has a very serious condition with my hips, I have to replace the left one. I have been taking Animal Flex for a while, this is my 3erd pack. I have been feeling great, with less inflamations and pain, but i am really concern about a particular matter. In my last blood test, a week ago my cholesterol levels came out to hight 420. Is it possible there might be a conection ?? I am also using Xpartagen xt for testosterone. I need to know please

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