Sea-Cal | Seaweed Calcium Supplement Powder | Strong Bones & Healthy Joints | 340G

5.0
Rated 5.0 out of 5 stars
2 Reviews
$40.96

Sea-Cal is a natural calcium supplement powder made from seaweed that supports strong bones, teeth, and overall skeletal health in pets. Our formula provides naturally occurring bioavailable minerals from seaweed, making it a cleaner, more absorbable alternative to traditional calcium sources.

Provides Bioavailable Calcium
Supports Bones, Joints and Teeth
Balances Calcium-Phosphorus Ratios
Promotes Long-Term Musculoskeletal Health
Supports even better with:
Joint Support Herbal Tonic Blend | Helps Stiffness and Soreness
$20.76
Alfalfa Single Herb Tonic | Maintain Joint Mobility & Digestion
$20.76

Sea-Cal is a highly absorbable calcium supplement sourced from Lithothamnion spp., a species of red marine algae harvested off the clean, cold waters of Iceland. Unlike many calcium supplements that rely on bone meal, oyster shell, or limestone—sources that can carry environmental toxins or lack proper mineral balance—Sea-Cal delivers naturally occurring calcium in a porous, plant-based matrix that enhances absorption and utilization by the body.

In addition to calcium, Sea-Cal contains naturally occurring magnesium, boron, and trace minerals that work synergistically to support strong bones, joint function, and healthy nerve transmission. This full-spectrum mineral profile is especially important for pets on homemade or raw diets that may be calcium-deficient, as well as growing puppies and kittens, seniors, or pets recovering from injury or illness.

Easy to mix with food, Sea-Cal is gentle on the stomach and safe for daily use. It helps maintain proper calcium-phosphorus ratios in meat-based diets and supports balanced bone development and long-term musculoskeletal health in both cats and dogs.

Animal Essentials’ Sea-Cal stands apart for its use of calcified red marine algae (Lithothamnion spp.)—a sustainable, plant-based source of calcium that’s naturally rich in magnesium and trace minerals. Unlike traditional calcium supplements, Sea-Cal offers a cleaner, more bioavailable form of calcium that’s easy for your pet’s body to absorb and utilize, without the risk of heavy metals or animal byproducts. Ideal for all pets, Sea-Cal delivers a safe, filler-free solution rooted in nature and backed by integrity.

Why Animal Essentials difference

Active Ingredients:

Dehydrated Seaweed meal

Guaranteed Analysis per 3g tsp.:

Calcified Lithothamnium seaweed harvested from the Atlantic seabeds off Iceland’s coast. Moisture 5.0% max

Ash 89.0% min

Calcium 33.0% min

Calcium 38.0% max

Magnesium 3.0% min

Sulphur 0.45% min

Phosphorus 0.5% min

Potassium 0.1% min

Sodium 0.0022% min

Sodium 0.010% max

Zinc 22 ppm min

Iodine 20 ppm min

200kcal ME/kg and 0.2 kcal ME/g

NASC Certified
We've Rebranded
All-Natural Herbal Supplements
Made in USA with Globally Sourced Ingredients
NASC Certified
We've Rebranded
All-Natural Herbal Supplements
Made in USA with Globally Sourced Ingredients

Your guide to safe, effective herbal support—tailored to your pet.

Directions: Add to food once daily using scoop provided or as directed by your veterinarian.

1 scoop = 1 tsp

Whole Herbs, Real Benefits
Red Marine Algae (Lithothamnion spp.)
The calcium in red marine algae supports bone density, dental health, muscle contraction, and nerve signaling. The natural ratio of calcium to magnesium helps ensure proper mineral balance, while the trace elements contribute to metabolic health, enzyme function, and overall resilience.
Red Marine Algae (Lithothamnion spp.)
Red Marine Algae (Lithothamnion spp.)
Nutrients: Iodine, calcium, iron, potassium, fiber, omega-3s, vitamins, and other minerals
Origin: Iceland
Red Marine Algae (Lithothamnion spp.)

Frequently Asked Questions

Sea-Cal is ideal for daily use in pets on raw or homemade diets that lack adequate calcium, as well as puppies, kittens, seniors, or any animal needing extra bone support. It’s also useful during pregnancy, lactation, or recovery from orthopedic injury.

Yes, Sea-Cal is formulated for both species and dosed by body weight. It mixes easily with wet or dry food.

Unlike bone meal, which may contain contaminants and is animal-derived, Sea-Cal is plant-based, sustainably sourced, and naturally balanced with magnesium and trace minerals—making it cleaner, safer, and more bioavailable.

Yes, Sea-Cal is gentle and safe for daily, long-term use. It supports healthy skeletal development in growing pets and maintains bone strength and joint mobility as pets age.

Sea-Cal has a mild, oceanic scent and flavor that most pets tolerate well. It blends easily into food and won’t overpower meals.

These testimonials are for informational purposes only. The information is not a substitute for expert veterinary care. Testimonials are written by actual customers and represent their own observations. These observations are not guaranteed, are not medically substantiated, and may not be typical for other pets.
5.0
Rated 5.0 out of 5 stars
Based on 2 reviews
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
2 reviews
  • T
    Tyler
    Reviewing
    Sea-Cal | Seaweed Calcium Supplement Powder | Strong Bones & Healthy Joints | 340G
    I recommend this product
    Rated 5 out of 5 stars
    15 seconds ago
    Great for pet parents!

    I’m a first-time dog owner and decided to try a homemade diet for my pup with help from my vet. I was a little overwhelmed at first, but Sea-Cal made things a lot easier. It’s super simple to use, and I feel good knowing my dog is getting the calcium he needs from a natural source. He’s been doing great on it! I also like that the ingredients are clean and sustainably sourced. Definitely recommend for anyone trying to feed their dog a more natural diet.

  • J
    Jamie
    Reviewing
    Sea-Cal | Seaweed Calcium Supplement Powder | Strong Bones & Healthy Joints | 340G
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    High quality product

    I’ve been using Sea-Cal Powder for a few months now with my dog, and overall, I’m really happy with it. I feed a homemade diet, so finding a clean, reliable calcium source was super important to me. This one stood out because it’s made from red marine algae, which feels like a better option than bone meal or crushed eggshells.

    The powder mixes easily into food, and my pup doesn’t seem to notice it at all! No weird smell or taste that I can tell. It’s also reassuring to know it has other trace minerals and magnesium, which I know help with absorption. Her coat looks great lately, and her energy’s been solid, so I do think it’s making a positive difference.

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ALL-NATURAL TONICS | POWDERS | CAPSULES | CHEWS

ROOTED IN NATURE.
DRIVEN BY PURPOSE.
TRUSTED FOR DECADES.

For decades, Animal Essentials has been committed to enhancing your pet's health with all-natural, ethically crafted supplements—that work.
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RETURN TO NATURE
Crafted by expert herbalists, Animal Essentials brings the healing power of nature back to your pet's daily routine with pure, plant-based supplements that support whole-body wellness.
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TRUSTED FORMULAS
For over 30 years, Animal Essentials has earned the trust of veterinarians and pet parents alike for producing effective natural supplements—and we honor that trust in every bottle we make.
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3RD PARTY TESTED
To uphold our standards we conduct third-party testing on all our products for potency, purity, and consistency, ensuring the quality and effectiveness of every batch.
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MADE IN USA WITH GLOBALLY SOURCED INGREDIENTS
Formulated, extracted and bottled in house ensuring integrity and care in every step.
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PREMIUM INGREDIENTS
Our process begins with the finest natural human-grade ingredients, sourced transparently from ethical suppliers who meet our rigorous standards for purity, potency, and sustainability.
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NO DYES, PRESERVATIVES, OR ARTIFICIAL FLAVORING
We skip the dyes, preservatives, and artificial flavoring because nature's purity is powerful, and we're bringing nature to your pet in its truest form.