Minerals & electrolytes

Strontium

A mineral very similar to calcium, which the body builds into bone. Taken for bones – studies on supplements are few.

13 products from US online stores, sorted by what 340 mg of strontium costs – not by the price per pack.

$0.11Lowest cost
per 340 mg strontium

Prices checked Nov 1, 2026, US
No paid placements

What does 340 mg mean?

strontium per serving in most of the products we checked: 227–750 mgstrontium per serving in most of the products we checked

340 mg is a fixed amount to compare by: half of the 13 products we checked have up to 680 mg per serving, the other half more.
There’s no official daily amount for strontium.

We compare by 340 mg only so products line up – it’s not a recommendation. Not medical advice.

Where products miss quality points

How the 13 products score

Very good 90+: 0
Good 75+: 12
Fair 60+: 0
Low under 60: 1

1 product contains titanium dioxide – a food authority has banned, restricted or flagged it as a possible health risk. Its score is cut in half, so it’s always in the red range. The product says why.

have no seal from an independent testing program: 13 of 13have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 5 whose label says “third-party tested”

The full 30 testing points need an independent test. Every supplement sold in the US is made under the FDA’s GMP rules – the maker checks its own products, which gives 10 points. A seal from a testing program like NSF, USP or Informed Choice means a lab outside the company checks that what’s inside matches the label. Most brands don’t take part. That doesn’t make a product bad – without a seal, a clean product still gets up to 80.

We find seals on the label and in NSF’s public lists. USP and Informed Choice don’t let us search their lists automatically, so a seal that’s only in their lists can be missing. How the score works

Good to know

Fact: 309%more per 340 mg for the most expensive product than for the cheapest.
Fact: 197%more per 340 mg for the cheapest tablets than for the cheapest capsules.

How we checked: one-time price for each size in the store’s US online shop, before sales tax and shipping, without subscriptions or coupons. Prices change often, so check the store before you buy. More on how we check

The amount we compare by only makes products comparable – it is not a dosage recommendation. Not medical advice.

How we calculate

Cost per dose = price ÷ (servings × amount per serving) × comparison amount. Example: $119.99 for 74 servings with 24 g of protein each is 1,776 g of protein. $119.99 ÷ 1,776 g × 30 g = $2.03 per 30 g of protein.

Found a mistake or a product we should add? Email us

Strontium

What does 340 mg mean?

Where products miss quality points

Pack size

Strontium

Strontium

Strontium Capsules

Strontium Caps

Strontium Citrate, 340 mg

Strontium Citrate

Strontium Citrate, 250 mg

Strontium

Strontium

Strontium

Strontium Citrate

Strontium Citrate

Strontium (Citrate)

Good to know