No B.S. O-Calcium Bolus™ — OMRI Listed
Case of 54 boluses (organic operations)
OMRI Listed for certified organic dairy operations, and beeswax coated — not paraffin wax like most competitors. Same 44 grams of highly absorbable calcium chloride, same 30-minute availability.
- $378$7.00 / bolusOCA-54Order a Case — $378
54 boluses · $7.00 each · free shipping
Free shipping · 100% money back guarantee · Made in the U.S.A.
Need an applicator?
Your first bolus order already includes one free, applied at checkout. Add another for a second parlor, or a spare for the truck.
Add a Gun — $80We ran the trials
Fewer health events than Bovikalc.
In a 304-cow on-farm trial, 9% of cows on No B.S. had a postpartum health event — against 22% on Bovikalc and 26% on no bolus at all. Published in the Journal of Dairy Science.
44 g
Calcium chloride per bolus
Single source. No fillers.
30 min
To full availability
Not a slow release you wait on.
9%
Health events on No B.S.
Against 22% on Bovikalc.
304 Jersey cows, housed together on identical diets, assigned to no bolus, Bovikalc, or No B.S. Health events tracked over 30 days in milk. Vagnoni, Coleman & Lichdi, J. Dairy Sci. 106 (Suppl. 1):447. Serum calcium rose on both boluses; the health-event rate is where No B.S. separated. The full table and the design are in the study.
OMRI Listed, and beeswax — not paraffin.
Most calcium boluses on the market are coated in paraffin wax, a petroleum product. Ours is coated in beeswax. That is what lets it carry the OMRI listing your organic certifier is going to ask about, and it is the reason organic dairies come to us in the first place.
What you get
- OMRI Listed — certified for organic dairy operations
- Beeswax coated, not paraffin wax like most competitors
- 44 grams of highly absorbable calcium chloride per bolus
- Calcium completely available within 30 minutes
- Acidifies cows to promote calcium resorption from bones
- No fillers, no extras. Made in the U.S.A.
How to use it
Give one bolus right after she calves, then a second 12 to 24 hours later, using the No B.S. stainless steel applicator. Each bolus delivers 44 grams of supplemental calcium, completely available within 30 minutes.
100% money back. If they don't work for your herd, you don't pay. No fine print.
Read the guaranteeCheck the work
The charts.
Serum calcium, measured. Tap a chart to enlarge it and drag around — or send this page to your vet or nutritionist.
Same calcium chloride, same science as our conventional bolus — the organic version is beeswax coated and OMRI Listed. A single calcium-chloride source raised serum calcium faster and held it higher over 24 hours than the market leader.
Serum calcium and health events over 30 DIM
304 Jersey cows · on-farm trial
Study design
- 304 Jersey cows assigned to one of three treatments: Control, Bovikalc, or No B.S.
- Cows housed together throughout, so diets were identical.
- Cows were well-acidified pre-fresh (urine pH 5.5).
- Boluses given at freshening; blood sampled 12–24 hours post-fresh, then a second bolus given.
| Item | Control | Bovikalc | No B.S. |
|---|---|---|---|
| Serum Ca, mg/dL | 7.74ᵇ | 7.93ᵃ | 8.03ᵃ |
| Cows fresh | 105 | 103 | 96 |
| Displaced abomasum | 4 | 1 | 1 |
| Ketosis | 3 | 0 | 0 |
| Lame | 5 | 1 | 1 |
| Mastitis | 7 | 13 | 6 |
| Metritis | 1 | 1 | 1 |
| Milk fever | 2 | 2 | 0 |
| Retained placenta | 5 | 5 | 0 |
| Total events | 27 | 23 | 9 |
| Rate | 26%ᵃ | 22%ᵃ | 9%ᵇ |
| Sold + died | 16 | 13 | 11 |
Within a row, values sharing a superscript letter are not statistically different. Serum calcium did not differ significantly between Bovikalc and No B.S.; the health-event rate did. Herd removal (sold + died) was numerically lower but not statistically separated.
Vagnoni, D.B., E. Coleman, and R. Lichdi. 2023. Effect of oral calcium supplementation on serum calcium and health events in mature Jersey cows. J. Dairy Sci. 106 (Suppl. 1):447.
Download the study (PDF)From a customer
Straight from the dairy.
“No B.S. calcium boluses have been an important part of our fresh cow program for several years. We're very satisfied with how they perform.”
manager, Cal Poly Dairy Unit · San Luis Obispo, CA
Conventional herd?
If you are not certified organic, the standard No B.S. Calcium Bolus™ is the same calcium at $5.00 a bolus, or $4.50 by the pallet.
See the standard bolusQuestions
Straight answers.
Is there an organic option?
Yes. The No B.S. O-Calcium Bolus™ is OMRI Listed for certified organic dairy operations, and it is beeswax coated rather than paraffin wax like most competitors. Same 44 grams of calcium chloride, same 30-minute availability.
How many boluses, and when?
Two boluses, spaced apart. Give one right after she calves, then a second 12 to 24 hours later, using the No B.S. stainless steel applicator. The first one covers the calcium crash at calving; the second carries her through the day after, which is where a single dose runs out.
What is actually in it?
44 grams of highly absorbable calcium chloride per bolus, coated so it is safe on the cow's throat going down. No fillers, no extras. Made in the U.S.A. That is the whole ingredient conversation.
What does shipping cost, and how fast?
Shipping is free on every order, every time — packs and pallets both. Orders ship directly to your dairy. Pallets move by freight, also free.
Do I have to use your gun?
No. These work with any standard bolus gun you already have. If you want ours, your first bolus order includes one free — it is applied at checkout, you don't need a code — and pallet orders include three.
What are the guarantee terms?
100% money back. If they don't work for your herd, you don't pay. No fine print, no restocking fee, no forms to chase. Email us and we take care of it.
Ready when you are
Judge it on your own cows.
Free shipping, and a 100% money back guarantee. If they don't work for your herd, you don't pay.
Still not sure? Ask us — a person reads these.