Magnesium is one of the most important minerals for active kids, and one of the first lost during sweaty play. We use magnesium glycerophosphate, a gentle, bio available form that is easy on young stomachs. Each pouch provides 30 mg to support cellular energy and muscle function throughout the day.

Potassium works with sodium to help the body hold the right amount of water where it needs to be. We use potassium citrate, a clean, bioavailable form that contributes to fluid balance. Each pouch delivers 60 mg alongside the other electrolytes in the formula.

Calcium is the mineral most associated with growing bones, and for good reason. We use calcium glycerophosphate, a gentle form that does not upset the stomach the way some calcium supplements can. Each pouch provides 15 mg as part of a broader electrolyte blend.

Sodium plays an important role in supporting hydration and overall balance in the body, especially for growing kids. Rather than relying on more common forms, we use sodium citrate—a gentle, well-tolerated option that works harmoniously within the formula.

Each pouch provides 45 mg of sodium, thoughtfully included to support how kids absorb and utilize key nutrients, without overpowering the blend.

We do not use synthetic ascorbic acid. Our vitamin C comes from organic acerola, a small tropical cherry that is a potent antioxidant and contains more vitamin C by weight than almost any other fruit. Each pouch provides 30 mg, which is 30% of the daily value for children. Vitamin C supports immune function and helps the body absorb iron from food.

D-alpha-tocopherol is the natural form of vitamin E, and it is significantly more bioavailable than the synthetic version (dl-alpha-tocopherol) found in many supplements. Each pouch provides 9 mg, supporting antioxidant activity in the body. It also helps protect the other sensitive ingredients in the formula.

Iodine is a trace mineral the thyroid needs to function properly. Most kids get iodine from iodized table salt, but it is worth including in a dedicated electrolyte formula. We source ours from organic kelp, a sea vegetable that concentrates iodine naturally. Each pouch provides 90 mcg, which is 60% of the daily value for children.

Irish sea moss (Chondrus crispus) is a red algae that has been eaten in coastal communities for centuries. It grows on rocky Atlantic coastlines and is rich in naturally occurring minerals. We use 100 mg of organic Chondrus crispus powder per pouch as a source of trace minerals that complement the formula's electrolyte blend.

Omega-3 ALA (alpha-linolenic acid) is an essential fatty acid the body cannot produce on its own, so it has to come from food. We source ours from organic flaxseed oil, one of the richest plant-based sources of ALA available. Each pouch provides 500 mg. It is a meaningful addition for kids who do not regularly eat fatty fish.

We use organic honey as the sole sweetener in Mersea Hydration Squeeze. No added cane sugar, no artificial sweeteners, no high-fructose corn syrup. Electrolyte mixes need small amounts of glucose to activate a process called sodium-glucose cotransport (SGLT-1), a mechanism in the small intestine that acts as an "accelerator" to move sodium and water into the bloodstream significantly faster than water alone. Honey offers that glucose and contributes a gentle background sweetness that works with the fruit extracts without overpowering them.

The peachy part of Peachy Mango comes from organic peach extract, not artificial flavor compounds. Organic fruit extracts are derived from the actual fruit, concentrating the natural flavor without synthetic chemistry. The result is a flavor that tastes like a real peach because it comes from one.

Mango extract brings the tropical sweetness and depth to the flavor profile. We use organic mango extract sourced from real mangoes, not synthetic esters designed to approximate the smell of the fruit. Paired with organic peach, it creates a flavor kids recognize and ask for again.

Vanilla is the ingredient you notice when it is missing. It rounds out the peach and mango and adds a warm, familiar undertone that makes the flavor feel complete. We use organic vanilla extract. A small amount goes a long way.

Glycerin is a natural compound derived from coconut that acts as a humectant in liquid formulas, helping maintain a smooth, consistent texture. We use organic glycerin. It also contributes a very mild natural sweetness at the levels used here.

Sunflower lecithin is a naturally derived emulsifier that helps keep oil-based ingredients, like flaxseed oil, evenly dispersed throughout the formula for a smooth, consistent experience in every pouch. It naturally contains choline, a nutrient that supports overall development, and we chose sunflower lecithin because it’s soy-free—making it a thoughtful option for kids with soy sensitivities.

Malic acid is an organic acid found naturally in fruits like apples, peaches, and mangoes. It is what gives fruit that pleasant tartness that balances sweetness. In this formula, it sharpens the peach and mango notes and helps maintain the product's pH stability.

The warm orange color of Mersea Hydration Squeeze comes from turmeric extract, not from synthetic dyes like Red 40 or Yellow 5. Turmeric is a root in the ginger family that has been used as a natural food colorant for thousands of years. The amount used here is for color only.

Purified water is the primary carrier for all the ingredients in the formula. We use purified water rather than tap water to ensure the base is free of chlorine, heavy metals, and other contaminants that could affect the stability or taste of the final product.