Best Fiber Supplements for Constipation of 2026

Twenty-eight pre-measured packets that disappear into whatever you are already drinking is a different pitch from a tub of psyllium. No scoop, no gel, no orange aftertaste — you tear one open, stir, and there is nothing to taste or see.

We reach for these when the alternative is skipping fiber altogether: a hotel breakfast, an office drawer, a week of meals out. That is the honest use case, and it is a real one. Wheat dextrin is a gentler, fermentable fiber, and a stick pack is built for maintenance rather than for clearing a stubborn stretch of constipation — if you are in a bad week, psyllium does more work.

Where it earns its place is solubility. It dissolves clear in coffee, water and juice without grit, which is the claim most fiber powders make and few deliver, and because it is genuinely tasteless you can stir it into yogurt or soup without wrecking either. Nothing else here disappears that completely.

A 360-count bottle of psyllium capsules is the unglamorous answer to the question of what to keep in the cabinet. It is not a product you look forward to; it is one you stop having to think about.

These are the store-brand equivalent of the name-brand psyllium capsules — same active ingredient, same bulk-forming action, no flavor, easy to swallow. If you already know capsules are your format, there is very little here to talk you out of them.

Here is what gives us pause: the information. The listing runs to three bullet points, with no fiber-per-serving figure and no serving size, so you are buying on the capsule count and the price rather than on a label you can check. For a bulk-forming laxative that is mostly fine — the mechanism has not changed in decades — but if you want to know exactly how much you are taking, the NOW bottle tells you.

Keep it for what it is: a large, plain supply for someone comfortable starting low and adjusting by feel. The least romantic pick here, and one of the most practical.

Capsules solve the two things people hate about psyllium — the texture and the glass of slime — and this bottle solves the third, which is running out. Five hundred capsules is a supply you stop thinking about, and there is no flavor to get tired of.

The routine is as simple as it gets: a few capsules with a full glass of water, once or twice a day, nothing to measure and nothing to stir. That is the whole appeal, and it is also why this is the bottle that goes in a travel bag without a second thought — more than the powders here can claim.

We like that the label is specific. Non-GMO, kosher, vegan, made without gluten — psyllium capsules are otherwise close to interchangeable, and the ones that tell you what is in them are easier to keep buying. Swallow them with plenty of water. Capsules are the easiest form to take dry, and dry psyllium is the one way this supplement goes wrong.

Gummies are the form people actually stick with, and this is the best-tasting one here — a soft orange chew with no sugar added and none of the chalky aftertaste that turns powder into a chore.

What you give up is strength. Five grams of plant-based fiber per serving, from inulin and soluble corn fiber, is a maintenance amount: enough to keep a decent routine regular, not enough to rescue a bad week. That is the trade, and it is a fair one for someone whose real problem is that they never take anything at all.

We point people at these when the pattern is buying powder, using it for a week, and abandoning it. A gummy you eat with your morning coffee beats a drink you skip, and the no-sugar-added formula means you are not undoing the point with a dessert's worth of sugar. The dose is modest; the odds you are still taking it in March are the reason it is on this list.

Cheap gummies usually taste cheap. These do not, and that is most of the argument: orange, lemon and strawberry in one bottle, a soft chew, and colors from turmeric, black carrot juice and annatto instead of synthetic dyes.

For a first fiber supplement we struggle to justify spending more. Two gummies a day, 4 g of chicory root fiber, vegetarian and gluten-free, in the least expensive gummy bottle here. The catch is tolerance: inulin ferments, and starting at the full two-gummy serving can leave you gassy for the first few days. Start with one.

The other small thing: these are soft, and in humid weather they stick to the bottom of the bottle — store the bottle upside down and they drop out cleanly. Not the most refined fiber supplement here, and it is not trying to be.

Unflavored psyllium is the cheapest fiber you can buy by weight, and this tub is the proof: one tablespoon carries 6 g of soluble fiber, most of a day's soluble-fiber target in a single spoon.

The problem is water. Tip a tablespoon into a glass and it seizes into lumps before you have found a spoon, so the label's instruction to mix it into at least 12 ounces and drink immediately is not a suggestion. Whisk hard, drink fast, follow with more water. Do it slowly and you will be scraping gel off the sides of the glass.

Taste is neutral rather than absent. In a smoothie, oatmeal or juice it disappears behind whatever else is in the cup; in plain water it tastes faintly of the plant it came from. That is the honest split, and it is why we treat this as an ingredient rather than a drink.

So this earns its place for a particular buyer: someone who already makes a smoothie or a bowl of oats every morning and wants the cheapest, most concentrated fiber they can stir in. Everyone else should take a capsule — same fiber, far less ceremony.

Two capsules carry 1,450 mg of psyllium, and that is the entire pitch: at this concentration you are swallowing two pills instead of five or six, and the bottle gives you 120 servings of it.

The capsules are on the large side, tasteless, and easy enough to get down with a full glass of water — which you need regardless, since psyllium is only as good as the liquid you give it. The label asks for at least 8 ounces, and that is the number to hold yourself to.

Swallowing two capsules is a materially easier habit than swallowing six, and 240 capsules is four months at a serving a day. That is the case for this over the cheaper bottles; the arithmetic of a big container only helps if the pills are few enough that you keep taking them.

We keep it in the roundup for the person who tried psyllium capsules, hated swallowing half a dozen at a time, and quietly stopped. Concentrated enough to make the habit small, and as plain as a supplement gets.