Effervescent tablets

An effervescent tablet is a pressed powder that reacts the moment it meets water. Citric acid and sodium bicarbonate come together, release carbon dioxide, and the tablet falls apart. What you drink is a solution, so the vitamins and minerals are already dissolved before they reach your stomach.

Dissolving helps, but only for the right nutrients

Your body does not have to break a tablet down first. That suits water-soluble nutrients: vitamin C, the B vitamins, and mineral salts such as potassium and magnesium in hydration drinks. It is not the right carrier for everything. Oils such as omega-3 cannot be pressed into a fizzy tablet, and the fat-soluble vitamins A, D, E and K are usually taken with a meal that contains some fat. That is why our multivitamin range also holds capsules and softgels. The format follows the nutrient, not the other way round.

The sodium and acidity trade-off

The fizz has to come from somewhere. Most effervescent tablets use sodium bicarbonate or sodium carbonate, so every tablet adds a little sodium to your day. On a normal diet that is rarely a problem. If you keep an eye on salt, read the nutrition panel instead of assuming a supplement contains none. The drink is also acidic because of the citric acid. Finish your glass within a short time rather than sipping it all morning, and follow it with plain water.

How we choose which fizzy tablets to stock

We look at three things: the form of each nutrient, the dose per tablet, and whether the combination makes sense in one glass. We prefer a dose you can take every day over a headline number on the tube. With hydration tablets we want sodium, potassium and magnesium declared separately, not hidden in a blend. Sweetener choice counts too, because you taste every tablet. We buy directly from the brands, so what arrives is authentic, and every product passes our compliance team before it goes live. Read how we select our brands.

Who this format suits

This is a practical choice rather than a better one. It works well for:

• people who find swallowing tablets or capsules difficult
• anyone who forgets a pill but not a drink, for example a daily glass with Vitamin C at breakfast
• training, hot weather or travel, where electrolyte drinks replace fluid and salts you lose through sweat
• households that prefer one shared tube to several bottles of pills

Be honest about the cost: price per dose is usually higher than a plain tablet, and a tube takes up more room than a blister strip. What you get back is a dose you will actually take, which matters more than the theoretical strength of a pill sitting unopened in a cupboard.

Keep expectations realistic as well. Vitamin C contributes to the normal function of the immune system, and vitamin D contributes to the maintenance of normal bones. Those effects come from taking a nutrient consistently, not from one fizzy glass, so give any new routine two to three weeks before you judge it. Store the tube tightly closed, because these tablets react to moisture in the air as readily as they do to water.