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Pea Protein Powder Side Effects

pea protein side effects
Last modified: January 14th, 2019 05:01 am

Not unlike regular protein powder derived from milk, pea protein powder has some side effects that everybody should be aware of.  We realize that probably 90% of our readers don’t actually use pea protein powder and tend to stick with casein or regular whey protein mixes (Like our WheyXX) to get their protein supplementation.  Pea protein powder is commonly substituted by people who are lactose intolerant or have made the life choice to practice veganism.  The side effects remain the same, no matter what your protein supplement of choice may be.

Why Pea Protein Powder?

Pea protein powder is often a little bit less expensive than the usual suspects when it comes to protein supplementation; Soy and whey.  Mostly because peas are a hardy vegetable that can be grown in many different climates.  Because pea protein powder tends to come laced with other very beneficial substances, rather than just protein, it’s no wonder there are other benefits apart from the enhanced protein levels.  Here is a list of benefits we receive when we add pea protein powder to our supplementation regimen:

Possible Side Effects of Pea Protein Powder

Most side effects are almost never seen but that doesn’t mean you don’t need to be aware of them.  As stated a few times before, we at Vaxxen believe in complete transparency so we want our readers to understand that there is SOME risk involved.  The risks are almost always a direct result of overconsumption or too much supplementation.  Here is a list of the top three potential side effects of protein powder supplementation and how to counteract or avoid each:

  1. Weight Gain – Easily the most common side effect seen when it comes to pea powder supplementation. Technically speaking, this is the most common side effect seen in any sort of protein supplementation regimen.  People tend to see results and impressive muscle gains after just a few weeks so they are more likely to overdo it and try to use too much protein supplementation.  Believe it or not, there is a thing.  Protein will pack on the pounds just like fats and carbs will.  Remember not to use more than directed.
  2. Decrease in Kidney Function – Something that goes along with just about every supplementation out there, protein or otherwise. Everything you put in to your body needs to be broken down by either the kidneys or liver, or some combination of both.  Proteins are primarily systematically attacked and broken down by chemicals produced in the kidneys.  Taking in too much protein will result in the kidneys to be overworked, leading to an eventual breakdown.  Again, too much of a good thing is a bad thing.  Remember not to use more than directed.
  3. Joint Pain – Some of this can be attributed to unexpected weight gain. Obviously if you gain weight, you’re going to be putting more stress on your joints.  That said, in rare cases, people who mix protein supplements with antioxidant supplements for recovery have been reported to feel unexpected soreness in their joints.  Such is not the case in people who do not use both supplements and is, admittedly, very rare for people who DO mix the two [5].  Just something to be aware of in the ongoing practice of full disclosure we at Vaxxen have regarding our products.


  1. Dominik H Pestacorresponding author and Varman T Samuel
    A high-protein diet for reducing body fat: mechanisms and possible caveats
    Nutr Metab (Lond). 2014; 11: 53.
    Published online 2014 Nov 19. doi: 10.1186/1743-7075-11-53
  2. Nicolas Babault,corresponding author Christos Païzis, Gaëlle Deley, Laetitia Guérin-Deremaux, Marie-Hélène Saniez, Catherine Lefranc-Millot, and François A Allaert
    Pea proteins oral supplementation promotes muscle thickness gains during resistance training: a double-blind, randomized, Placebo-controlled clinical trial vs. Whey protein
    J Int Soc Sports Nutr. 2015; 12: 3.
    Published online 2015 Jan 21. doi: 10.1186/s12970-014-0064-5
  3. Stuart M. Phillipscorresponding author
    The impact of protein quality on the promotion of resistance exercise-induced changes in muscle mass
    Nutr Metab (Lond). 2016; 13: 64.
    Published online 2016 Sep 29. doi: 10.1186/s12986-016-0124-8
  4. Lisa M Davis,corresponding author1 Christopher Coleman,1 Jessica Kiel,1 Joni Rampolla,1 Tammy Hutchisen,1 Laura Ford,1 Wayne S Andersen,1 and Andrea Hanlon-Mitola2
    Efficacy of a meal replacement diet plan compared to a food-based diet plan after a period of weight loss and weight maintenance: a randomized controlled trial
    Nutr J. 2010; 9: 11.
    Published online 2010 Mar 11. doi: 10.1186/1475-2891-9-11
  5. Stephen J. Ives,1 Samuel Bloom,1 Alexs Matias,1 Noelle Morrow,1 Natalya Martins,1 Yookee Roh,1 Daniel Ebenstein,1 Gabriel O’Brien,1 Daniela Escudero,1 Kevin Brito,1 Leah Glickman,1 Scott Connelly,2 and Paul J. Arcierocorresponding author1
    Effects of a combined protein and antioxidant supplement on recovery of muscle function and soreness following eccentric exercise
    J Int Soc Sports Nutr. 2017; 14: 21.
    Published online 2017 Jul 3. doi: 10.1186/s12970-017-0179-6

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