I don’t gatekeep my health secrets. I’m on a GLP-1 for weight loss, but I also pair it with a substantial list of supplements to reduce the side effects of the injections, while maximizing the health benefits. Because my kitchen counter looks like a pharmacy, I’m usually on the lookout for good deals on supplements whenever I’m running low.
Amazon’s four-day Prime Day shopping event is the perfect time to stock up on your supplement needs, with discounts up to 72% off. So, if you’re looking to stock up on your favorite protein, like this case of Premier protein in a variety of flavors for 25% off, or hoping to add a vitamin C supplement into your regimen, now is the time.
Here’s a look at some of the top deals on protein and supplements during Prime Day:
Note: This is not medical advice. We suggest consulting your doctor before starting any vitamins or supplements.
Shop top protein and supplements deals during Prime DayNature’s Bounty Vitamin D3 5000 IU Softgels
Sunwarrior Vegan Fiber Supplement Prebiotic
Sunwarrior Vegan Fiber Supplement
I’ve used both fiber bars and fiber gummies, but now is a good time to score this deal on a fiber supplement.
Key Nutrients Electrolytes Powder Packets
These electrolyte powder packets were ranked one of the best in that category by Forbes Health, and you can’t go wrong with watermelon.
Premier Protein Liquid Protein Shake, Caramel
Premier Protein Liquid Protein Shake, Caramel
One of my favorite protein shakes and flavors (because it has no gritty or gross protein taste), perfect for meal replacement or a protein-coffee to start your day!
Cellucor C4 Sport Pre Workout Powder
Cellucor C4 Sport Pre Workout – Watermelon
Add a boost to your workout with this C4 pre-workout powder, which comes in four different flavors but the watermelon is my favorite.
MegaFood Magnesium 300mg
MegaFood Magnesium 300mg
I’ve included a magnesium supplement in my nightly regimen for several years now; it’s great for gut health as well as migraine prevention (according to my doctor).
PlantFusion Vegan Iron Supplements
PlantFusion Vegan Iron Supplements
These iron supplements are great for men and women, but highly recommended for pregnant women AND hair health.
KAL Calcium Citrate 1000mg
KAL Calcium Citrate 1000mg
Calcium is great for bone and teeth health, but one of the reasons why consulting a doctor is so important; calcium blocks the absorption of iron, so the two should not be taken together.
Optimum Nutrition Creatine Monohydrate Plus Powder
Optimum Nutrition Creatine Monohydrate Plus Powder
Creatine is great for muscle growth, and this popular Optimum Nutrition one comes in orange passionfruit!
Ancient Nutrition Collagen Pills
Ancient Nutrition Collagen Pills
Collagen is another supplement I added to my routine for hair and nail health; I’ve tried the flavorless powders, but a pill supplement is my preferred method.
When is Amazon Prime Day?
Amazon Prime Day takes place from Tuesday, July 8, through Friday, July 11. The savings will officially begin at 12:00am PT/3am ET on July 8.
Do I need to be an Amazon Prime member to shop Prime Day deals?
Yes, in order to access the best Prime Day deals, you’ll want to sign up for an Amazon Prime membership. New members can try one week of Amazon Prime benefits for just $1.99 right now.
Amazon Prime Membership
Get access to member-exclusive benefits and deals with an Amazon Prime membership.
USA TODAY Shopping will be covering all the savings throughout Prime Day 2025, so be sure to sign up for our newsletter and follow us on Instagram to stay updated!