Colostrum Dosage: How Much to Take (2026)
Educational summary — not medical advice. Colostrum is milk-derived; if you have a cow's-milk-protein allergy, avoid it. Benefits are largely unproven — see what the evidence shows.
The honest answer
Labels suggest 1–3 g/day, but the studies that showed anything used far more — and grams of powder is the wrong thing to count anyway. What matters is grams of IgG, the active immunoglobulin. A 3 g scoop of a disclosed 30% powder gives ~0.9 g of IgG; a 3 g scoop of an undisclosed powder gives an unknown amount. Use the calculator below to see what a product actually delivers — and what you pay per gram of IgG.
Here's the tension nobody selling colostrum mentions: the human trials that found effects on gut permeability or exercise generally used tens of grams per day — the running-training study that measured gut permeability, for instance, gave 60 g/day (Buckley 2009; see also Marchbank 2011), while a typical tub suggests a 1–3 gram scoop. So a "wellness" serving is a fraction of any studied dose. There's no established optimal dose, and colostrum is generally well tolerated — but be realistic that a small daily scoop is a long way from what the research tested.
What are you actually getting (and paying)?
Enter any colostrum product's numbers. This shows the grams of IgG per serving and the cost per gram of IgG — the only apples-to-apples way to compare. Leave IgG blank if the brand doesn't disclose it.
How to take it
- Mix powder into cool or warm (not hot) liquid. High heat can denature the immunoglobulins that are the whole point — skip stirring it into boiling coffee.
- Timing is flexible. Many take it on an empty stomach in the morning; there's no strong evidence a specific time is better.
- Give it weeks, not days, and keep expectations calibrated to what's actually supported (gut and exercise uses, not beauty or general immunity).
- Judge the product by disclosed IgG, not by the milligram of powder or the sourcing story. A big "3000 mg" on the front means little if the IgG is unknown.
Products that disclose what you're dosing
A dose is only meaningful if you know how much IgG is in it. These disclose their IgG (and two are batch-tested) — see the full ranking.
Minimum 30% IgG, ISO batch-tested — the cheapest per gram of actual IgG (~$0.59/g).
Minimum 50% IgG, so a small scoop delivers the most active immunoglobulin per serving.
Discloses 15% IgG and is batch-tested — convenient if you dislike mixing powder.
As an Amazon Associate we earn from qualifying purchases. Ranked by disclosed IgG and cost per gram of IgG, never commissions.
| Product | Colostrum/serving | IgG % | IgG/serving | $/serving | $ per g IgG |
|---|---|---|---|---|---|
| Nutricost Colostrum Powder (30% IgG) | 3000 mg | 30% | 0.9 g | $0.53 | $0.59 |
| Vitamatic Bovine Colostrum Powder | 2000 mg | 50% | 1 g | $0.67 | $0.67 |
| Nutricost Colostrum 1000 mg Capsules (15% IgG) | 1000 mg | 15% | 0.15 g | $0.27 | $1.80 |
| Vital Proteins Bovine Colostrum (40% IgG) | 1350 mg | 40% | 0.54 g | $1.25 | $2.31 |
The three brands that don't disclose IgG (ARMRA, Cowboy, NOW) can't appear here — their cost per gram of IgG is uncomputable. Note NOW's 500 mg serving is a low-dose outlier, well under the 1–3 g most labels suggest. Prices are live Amazon figures ÷ pack serving count.
Frequently asked questions
How much colostrum should I take per day?
Labels suggest 1–3 g/day, but trials that showed effects generally used tens of grams per day (a gut-permeability study gave 60 g/day) — so a wellness serving is well below any studied dose. There's no established optimal; it's generally well tolerated. What matters more than powder grams is how much IgG it contains.
How much IgG is in a serving?
Colostrum grams × the disclosed IgG %. E.g. 3 g of a 30% powder ≈ 0.9 g IgG; 3 g of an undisclosed powder ≈ unknown. Brands that hide the IgG % (including ARMRA) make it impossible to know or to compare value.
When and how should I take colostrum?
Flexible timing; mix into cool/warm (not hot) liquid to avoid denaturing the immunoglobulins. Milk-allergic people should avoid it entirely; lactose-intolerant people usually tolerate it.
Related
- Best colostrum supplements — ranked by disclosed IgG and cost per gram of IgG
- Does colostrum actually work? — the honest evidence
- Colostrum: what it is & who it's for
Sources
- Playford RJ, et al. "Bovine colostrum is a health food supplement which prevents NSAID induced gut damage." Gut. 1999. PMID: 10205201
- Marchbank T, et al. "The nutriceutical bovine colostrum truncates the increase in gut permeability caused by heavy exercise in athletes." Am J Physiol Gastrointest Liver Physiol. 2011. PMID: 21148400
- Playford RJ, Weiser MJ. "Bovine Colostrum: Its Constituents and Uses." Nutrients. 2021. PMID: 33477653
- Porcaro F, et al. "Anaphylaxis to cutaneous exposure to bovine colostrum based cream." Asian Pac J Allergy Immunol. 2019. PMID: 29549703