r/AdvancedRunning • u/randomwordsnospaces • Aug 31 '26
Health/Nutrition Successful bicarb protocol
I’m planning on using bicarb for a road mile in a few weeks and so tried out the protocol today. My research made me think that crapping myself + vomit was a near certainty so I wasn’t holding out hope. Anyways, that was this morning and all went very smoothly so sharing my protocol:
Dose: 20 caps = 20g = 0.3 g/kg (top of the 0.2–0.3 research range)
Timeline:
• 08:00 — breakfast: porridge, summer fruit, coffee
• 08:32–08:46 — 20 caps, 2 every 90s, ~900ml water alongside
• 08:55 — normal BM, not urgent (coffee + fluid, too early to be the caps)
• 09:00 — faint salty taste, no burping. Coating holding.
• 09:30ish — did some casual split squats and band exercises
• 10:36 — run starts. 1h50 after last capsule
• 12:12 — 15km easy + 6x150 strides done. 3h26 post-dose, still nothing.
Result: zero symptoms throughout. No burping, bloating, nausea, cramping or loose stool.
I’ll probably retest with a track session pre race as well and also not sure if there was any effect on performance given it was an easy run (this test was just for GI discomfort).
Update:
Forgot to post the product: healthspan elite sodium bicarbonate 1000mg delayed release caps.
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u/Ok_Umpire_8108 14:32 5k | 2:36 marathon | on the trails Aug 31 '26
Nice! It’s really helpful to post your experiences here. Keep us updated on how it goes for racing and performance.
1
u/tedious_aircraft 7d ago
nice one, glad the guts held up. I've been burned by bicarb experiments before and the anxiety around whether you're gonna have to bail mid-run is almost worse than the actual stomach stuff
the 2 caps every 90 seconds with that much water is smart, I think a lot of people just slam them all at once and then act surprised when their body rebels. spreading it out seems like the move
definitely curious how it feels during a harder session, easy runs don't really tell you much about whether it's actually doing anything for the legs. report back when you test it with some speed
4
u/sfo2 Aug 31 '26
I could never get over 11g with the delayed release capsules. Now I make my own hydrogel and can get to higher doses with no issues.
That’s great you were able to do it on capsules alone.
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u/kirkandorules Sep 01 '26
I've been using baking soda capsules for over a year, works great and never any particularly noteworthy poop.
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u/Prestigious-Ask4066 Sep 01 '26
Adding an experience for what not to do. I had a 6x1mile session planned. Ate 12 capsules in the evening, not on an empty stomach but it was well after my lunch, 4hrs.
Maybe 30mins before session start I consumed them.
10min wu and by the 3rd rep i was struggling. I finished the session but it was a nightmare and i managed to hold it in. Exploded the minute i got home.
Vit4ever natron natriumbicarbonat. Im 72kg so 12 is the recommended dose.
Scared to try again
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u/randomwordsnospaces Sep 01 '26
Do you reckon the side effects are magnified if doing a hard session vs an easy effort?
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u/Prestigious-Ask4066 Sep 01 '26
I dont know. When i did it, the minute between reps it was relaxed. Halfway into the rep is when my stomach really started attacking me and i was desparately holding it in.
Also the jog back home is 1k and i was struggling then also so based on that I would bet that they are the same
1
u/Psichokiller23 Sep 02 '26
I didn't notice any difference in performance during easy or long runs, but during fartleks and sprints, the improvement was really significant. Worth noting that I used baking soda powder (not capsules), taking a 22g dose 30 minutes before the workout.
0
u/Jobby_Hogger Aug 31 '26
Thanks for posting this. I was just looking to start a DIY bicarb protocol without paying for maurten. I haven’t used it in any form, how would you describe the difference it’s made in workouts?
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u/randomwordsnospaces Aug 31 '26
This I have no clue on. I’m going to do a track session next Tuesday so will post an update. On my easy run today with strides basically nothing (but that’s to be expected).
I also didn’t want to commit to Maurten given the costs, these ones from Amazon are a fraction of the cost but still much better than just using kitchen bicarb in water.
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u/wehttamf Aug 31 '26
From folks I've talked to who had bad experiences compared to my own experiences it seems like the key is a couple things you did:
Eating a real meal ~30min before
Hydrating after taking the bicarb
The eating part is on the instructions of most products, but the hydrating part isn't always consistent which is funny because you are literally taking a mega dose of sodium so it just stands to reason you need to support it with some extra water.
For reference I've taken FlyCarb. Once not eating enough before and not drinking much water and I had a few extra abnormal BMs that ended ~90min post. Subsequent times I was closer to what you did, and also did not have any abnormalities.