Seaonic 101.
All your answers here.

Returns are free, but shipping costs are at the customer’s expense. Opened products are not eligible for return. Refunds are processed within one week of receiving the returned product.

Tracking links are sent with all order confirmation emails. If you didn’t receive one, email info@seaonic.com with your order number, name, and email, and we’ll assist you.

You have a 30-day cancellation window. If the order has already been shipped, shipping costs will be at the customer’s expense. Please contact us as soon as possible to request changes.

Yes, we ship to P.O. boxes as long as all details are clearly provided during checkout.

Currently, we operate exclusively online, but we offer free returns to ensure a risk-free experience.

Both start from the same source — pure, cold-microfiltered seawater from the Bay of Biscay. The difference is concentration.

Hypertonic is our original, concentrated formula. It is your "Activate" format — higher mineral intensity, designed for mornings, before or during exercise, and periods of active depletion.

Isotonic is the same seawater diluted with pure spring water to a gentler, balanced concentration. It is your "Restore" format — gentler, suitable for any time of day, and ideal for daily maintenance or sensitive individuals.

If you are active, exercising, or want morning mineral support — start with Hypertonic.

If you want gentle daily hydration at any time of day — Isotonic is your go-to.

Not sure? Contact our team at info@seaonic.com for a personal recommendation.

Hypertonic: morning, or before and during exercise.

Isotonic: any time of day.

For best absorption, take either format on an empty stomach — ideally 30 minutes before a meal or 90 minutes after.

Salty — clean and natural, not synthetic or sour. Hypertonic is more intense; Isotonic is milder. If you are new to it and finding the taste strong, you can mix it with a small amount of water to start. Once you are used to it, take it straight for optimal absorption.

You can, but it is not ideal. Seaonic works through osmosis — the concentration of the fluid matters, not just the minerals in it. Diluting it into a large drink changes how it is absorbed at the cellular level. If you are getting used to the taste, mixing with a little water is fine. For full benefit, take it straight.

Two sachets daily — Hypertonic in the morning or pre-workout, Isotonic later in the day. For a protocol tailored to your needs, or reach out to our health coaches at info@seaonic.com.

Seaonic does not directly enhance cognitive function. What we know is that electrolyte depletion affects nerve signalling, concentration, and mental clarity. Seaonic restores the mineral balance your body needs to function normally. If depletion was the obstacle, removing it lets your body do the rest.

Cellular energy production depends on mineral balance. When you are depleted, your body cannot maintain normal output. Seaonic replenishes the full spectrum of ionic minerals your cells need to function properly — without stimulants, without shortcuts.

Muscle function relies on proper mineral balance. Sweat depletes far more than just sodium. Seaonic provides up to 78 ionic minerals and trace elements in their natural ratios, supporting normal muscle function and providing what your body needs for recovery.

Please check with your healthcare professional before use. If you have high blood pressure or salt sensitivity, we suggest starting with Isotonic, our gentler, balanced concentration.

Please check with your healthcare professional before use if you have a medical condition or take medication. Seaonic is pure, filtered seawater with naturally occurring ionic minerals, and many people start with Isotonic, our gentler format.

Please check with your healthcare professional before use during pregnancy or breastfeeding. Many people in this situation choose Isotonic, our gentler, balanced format.

Yes. Seaonic is collected from the Bay of Biscay at 30–50 m deep, cold-microfiltered at 0.22 microns, and third-party tested across 100+ quality parameters before every batch is released. No microplastics. No heavy metals. No pathogens. Just clean, bioavailable marine plasma.

Seaonic Hypertonic contains one ingredient: pure cold-microfiltered seawater, harvested from the Bay of Biscay. Seaonic Isotonic contains the same seawater diluted with pure spring water. Nothing else added.

Yes — up to 78 ionic minerals and trace elements in their naturally occurring ratios. Sodium, magnesium, potassium, calcium, chloride, zinc, selenium, iodine, copper, and more. None of it is added. It is simply what the ocean contains.

Most electrolytes are made from isolated compounds — sodium chloride, magnesium oxide — mined or synthetically produced, then mixed with sweeteners, preservatives, and flavourings like citric acid (added for manufacturing convenience, not health). Seaonic contains none of that. It is the complete, unprocessed mineral spectrum — straight from the source, in the form your body actually absorbs.

Because RDA values measure total quantity, not bioavailability. 1,000mg of sodium chloride only delivers approximately 390mg of absorbable sodium once it dissociates — and that does not account for cofactors or mineral interdependence. Seaonic's minerals are already ionic and ready for uptake. Do not be misled by labels that show higher numbers but deliver less.

A pharmaceutical-grade inner film certified for zero leaching, no microplastics, and no chemical interaction. The water never touches plastic, metal, or any material that could alter its ionic structure. The container is part of the formula.

We accept credit cards (Visa, MasterCard, American Express), PayPal, Apple Pay, and Afterpay for installment payments.

Yes, we offer installment payments through Afterpay.

Yes, all transactions are processed using industry-standard encryption technology to ensure the security of your payment information.

Shipping within the US typically takes 2-5 days.

Shipping costs vary based on location, but we offer free shipping on orders over $100 USD.

Yes, all orders over $100 USD qualify for free shipping.

Not at the moment. We currently ship within the US only.