This post is in partnership with Hiya. I only endorse products I believe in.
Getting enough fiber into my kids’ diets isn’t always easy. Sometimes they’re in a picky-eating phase and refuse all produce. Other times we’re traveling and it’s hard to find veggies they're willing to eat. And that’s when the tummy troubles and bathroom dramas start kicking in… which is why a kids’ fiber supplement really comes in handy.
I’ve been on the hunt for the best kids’ fiber to strengthen digestion and immunity. Here’s my honest take on Hiya Kids Daily Fiber+ vs. Olly vs. Lil’ Critters vs. Miralax.
Quick legend: 🥇category winner |🥈category runner-up | ⛔ don’t recommend in the category
Criteria #1: Nutrition
I specifically look for formulations made with different types of fibers that have different digestive benefits. I also look for ones that are made without added sugars to reinforce healthy habits and have minimal impact on blood glucose levels.
🥇 Hiya Kids Daily Fiber+
- 3 – 6 grams of fiber per serving
- Dragon fruit: A fiber-rich fruit that’s full of vitamin C and antioxidants.
- Organic inulin: Prebiotic fiber that feeds good bacteria in the gut.
- Vegetable fiber: Helps with regular, healthy bowel movements.
- Psyllium husk: Soluble fiber that improves digestion, and supports healthy blood sugar and cholesterol levels.
- Added sugars: 0 grams, naturally sweetened with organic pineapple juice, mango, monk fruit extract, and allulose.
🥈 Olly Kids Friendly Fiber
- 3 grams of fiber per serving
- Fructooligasschairdes (FOS): Prebiotic fibers that support digestion and gut health.
- Added sugars: 1 gram, sweetened with sugar.
🥈 Lil’ Critters Fiber
- 3 grams of fiber per serving
- Polydextrose: A soluble and prebiotic fiber which can support digestion, blood sugar, gut health, and healthy cholesterol levels.
- Added sugars: 0 grams, sweetened with sorbitol and sucralose.
⛔ Miralax
Contrary to popular belief, this is not a fiber supplement. It’s a laxative often used in children to treat constipation and irregularity. It should not be viewed as a supplement, rather than a temporary tool for extreme constipation. It doesn’t contain added sugar.
Criteria #2: Ingredient quality
🥇 Hiya Kids Daily Fiber+
- Third-party testing for heavy metals, microbials, and other contaminants.
- Clean Label Project Certified + Clean Label Project Purity Award
- Free from: Added Sugar, Gummy additives, GMOs, dairy, gluten, synthetic dyes, synthetic flavors
Olly Kids Friendly Fiber
- Free from: gluten, synthetic colors and flavors
Lil’ Critters Fiber
- Free from: synthetic dyes, dairy, gluten
Miralax
- Formulated for adults, not kids.
- Free from: preservatives and gluten.
Criteria #3: Taste
A fiber supplement only works if your kids actually like it, so I prioritize options with yummy kid-approved flavors.
🥇 Hiya Kids Daily Fiber+: A fiber powder with an Island Punch flavor that’s naturally sweet and fruity. Plus, it makes beverages bright pink, which makes it extra fun for kids.
🥇 Olly Kids Friendly Fiber: Fruity, sweet gummies that are berry flavored.
🥇 Lil’ Critters Fiber: Fruity, sweet ber-shaped gummies that are raspberry, strawberry, and lemon flavored.
⛔ Miralax: Claims to be unflavored powder, but definitely has a unfavorable taste.
Criteria #4: Form
I prioritize powder-based formulas over gummies because they’re more versatile and don’t resemble candy.
🥇 Hiya Daily Kids Fiber+: Comes as a powder that can be mixed with water to create a bright pink, kid-friendly drink.
Olly Kids Friendly Fiber: Gummy.
Lil’ Critters Fiber: Gummy.
⛔Miralax: Unflavored powder and formulated for adults.
Hiya Kids Daily Fiber+ is my clear pick for best fiber supplement!
Hiya Kids Daily Fiber+ totally comes out on top. It’s super nutritious, high-quality, and absolutely delicious! I also appreciate how thoughtful Hiya is about making wellness feel fun instead of clinical. Your first Fiber+ order arrives with a refillable canister and a set of stickers so kids can customize it however they want. It’s a clever way to get them excited about their daily “pink drink” and feel part of the process.
✅ Multiple fiber sources for complete digestive support.
✅ 0 grams of added sugar
✅ Third-party tested
✅ Clean Label Project Certified + Clean Label Project Purity Award
✅ Kid-approved taste + look
Get 50% off your first purchase with code NMM50
Author
