Combining Supplements

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About The Course

It is common for individuals who experiment with supplements to incorporate two or more products into their daily routine. The mentality that if one is good, two must be better, is a purveying thought process in many supplement users. We like to think that if we take two supplements, the combined effect is equal to the sum of their individual effects. In other words, one plus one equals two. This is the simple and logical scenario, where the effects of each supplement are independent of the other.

But what we do not always realize is that supplements, even natural ones, are chemicals, and that combining two or more can alter the intended effects in potentially undesirable ways. Unfortunately, the available peer-reviewed clinical research on the effects of taking multiple supplements simultaneously is scarce; nonetheless, for educational purposes the point to keep in mind is that the use of dietary supplements is not always simple math. In fact, in the case of supplements, one plus one does not always equal two.

Features online enrollment, online exam and instant grading as well as automatic certificate generation upon completion of course.


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I have already recommended ISSA to people who have reached out to me inquiring about my satisfaction and thoughts and I will continue to do so.

Helene Bingley

I highly recommend anyone who is in this field or career and to take ISSA, they are very helpful, professional and they help you expand in the personal training, fitness and healthy lifestyle.

Joel Bunche

Don't be shy to live your dream and as I did, become yourself, become trainer.

Jordi Ciprin

ISSA is an outstanding place to get your certification through.

Mandy Evans

The resources ISSA provides (both in hard copy and online) such as the study guide, the coursebook, the chapter summary videos, the exercise videos, and the question board are all very valuable tools...

Helen Pardue

After now having received my certification through ISSA, I feel confident that I'm ready to start my business.

Sarah Turnley

The knowledge that I received has been extremely helpful in my own weight loss journey where I have lost more than 100 lbs.

Antione Robinson

ISSA is one of the most respected certifications out there and in my opinion the most comprehensive.

Peter Cardona

I feel I can give my best to my clients and continue to further my education so I can give them the most up to date and relevant information.

Lundyn Wyllie

ISSA has been the best thing that has happened to me!

Michael Patsaros

The results were amazing and ignited a passion in me to help others achieve their health and fitness goals and avoid the mistakes I made.

Dwayne Peters

Since I have been in the fitness field for over twenty years I can truly say I have gained a lot more experience and knowledge from successfully completing the ISSA course.

Sandra Adams

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