Trending: Baking soda and lemon juice shots to lose weight

If baking soda has shown up in your social media feed lately, it probably looked something like this: a small glass, a squeeze of lemon, a heaping spoonful of white powder, and a dramatic fizz that makes the whole thing feel oddly official. The baking soda and lemon shot isn’t something you sip over breakfast—it’s a ritual that creators swear will kick off fat burning, flatten your stomach, or quiet your appetite before meals.

If the pitch sounds familiar, that’s because it is. It follows the same one-ingredient-fixes-everything formula as the pink Himalayan salt drink, the gelatin trick, and the turmeric hack. Quick results and minimal effort using something you probably already have at home.

To separate the facts from the hype, let’s take a closer look at baking soda and lemon juice shots. In this article, we’ll walk through what the trend actually involves, why it’s taken off, what the claims get wrong, and what the risks are if you’re thinking about making it a daily habit. We’ll talk to Maggie Hudspeth, RDN, Senior Manager of Coaching at Noom, to hear an expert’s take and help you decide whether it’s worth trying.

What is the baking soda and lemon juice shot weight loss trend?

Baking soda is alkaline, which means it neutralizes acids. In baking, that reaction with acidic ingredients like buttermilk or vinegar produces carbon dioxide bubbles, which is what makes cakes and muffins rise. In your medicine cabinet, the same neutralizing effect is why it works as an antacid — a small amount in water can quickly calm stomach acid when heartburn strikes

The trend of using baking soda for weight loss latches onto its alkaline nature and builds a theory around it. The idea is: If baking soda can neutralize acid, maybe it can change the body’s internal chemistry in a way that encourages fat loss. We have seen this before in people who add baking soda to water, sometimes with apple cider vinegar, and drink it in the morning or before a meal.

The shot format is new, and what is giving the baking soda for weight loss trend new life. This isn’t a baking soda and vinegar concoction you sip throughout the morning—it’s a concentrated, ritual-like shot, the kind that feels like it must be doing something. 

Most versions involve about ¼ to ½ teaspoon of baking soda mixed with the juice of half a lemon, downed quickly on an empty stomach. Some people add a pinch of pink salt or a splash of apple cider vinegar. The core idea across all of them is the same: the alkalinity is doing the work.

Here’s how most people make it:

1. Measure ¼ to ½ teaspoon of baking soda.
2. Juice half a lemon or measure out about 1 tablespoon.
3. Combine it all together and watch it fizz dramatically.
4. Drink right away, before the fizz dies down, on an empty stomach in the morning.
5. Optional: Add a small splash of water to make it go down easier, some apple cider vinegar, or salt.

Why is the baking soda and lemon juice shot so popular right now?

Baking soda and lemon shots follow the same formula as every wellness trend that came before it: affordable ingredients, a simple daily ritual, and an impressive-sounding promise. But a few specific things help explain why this one in particular has taken off.

It makes big claims that seem possible

The alkaline diet concept has been circulating online for years. The basic idea: Certain foods and drinks make your body more “alkaline,” and they claim that an alkaline environment is better for your health and metabolism. 

Baking soda is chemically alkaline, so it fits the story perfectly, and lemon, while acidic, is associated with freshness and digestion. Together, they seem like a potentially healthy duo.

The baking soda and lemon shot is actually a spinoff of an earlier trend—the baking soda and vinegar diet—which worked the same angle. That version mixed baking soda with apple cider vinegar in water and claimed the combination would shift your body’s pH in ways that burn fat. It didn’t, for reasons we get into below.  The lemon shot is the same theory with a new ingredient. 

The fizz makes it look like something real is happening

Mix baking soda and lemon juice, and you get a dramatic, bubbling reaction. It’s visually compelling, especially on video, and creates a strong sense that something meaningful is occurring in your body. 

Scientifically, the reaction is just carbon dioxide gas being released—the same thing that happens when you use baking soda in a cake or cookie, which is what helps them rise. It looks impressive, but it doesn’t mean anything is happening in your body.

Both are easy to buy and may already be in your kitchen

A box of baking soda and a lemon may cost you a couple of dollars. Compare this with the cost of weight loss medications, protein products, and wellness supplements, which can run hundreds of dollars a month, a pantry staple that promises similar results seems worth a try. The price alone is enough to make people curious.

Does a baking soda and lemon juice shot help with weight loss?

The specific claims floating around TikTok and YouTube tend to fall into a few buckets. Some sound more scientific than others. Here’s what’s actually behind each one.

Claim 1: It burns fat by making your body more alkaline

Verdict: False.

This idea of alkalinity is the main idea behind the trend, but it has two problems stacked on top of each other.

The first is a basic chemistry issue. Baking soda is alkaline. Lemon juice is acidic. When you mix them in a glass, they react with each other—that’s the fizz—and largely cancel each other out. What you’re left with is mostly sodium citrate in water. By the time the drink reaches your stomach, most of the alkalinity is already gone.

The second problem is that even if the baking soda weren’t neutralized, your body keeps its blood pH in a very tight range—between 7.35 and 7.45—no matter what you eat or drink. Your lungs, kidneys, and blood’s own chemical buffers are constantly working to hold that line. What you swallow doesn’t meaningfully shift it.

“The idea that you can change your body’s pH from the outside just isn’t how the body works,” says Hudspeth. “Your blood pH is one of the most tightly controlled things in your body. If it actually changed because of what you drank, that would be a medical emergency—not a weight loss win.”

Baking soda doesn’t make your body more alkaline in any meaningful way, and even if it did, that’s not how fat loss works.

Claim 2: It suppresses appetite

Verdict: Maybe, but only because it’s an uncomfortable feeling. 

Some people report feeling less hungry after taking the shot. But it’s probably not because these ingredients have some magical appetite suppression that keeps you from wanting to eat. The more likely explanation: they’re bloated. 

When baking soda meets the acid in your stomach, it produces carbon dioxide gas. That gas builds up quickly and makes your stomach feel full and uncomfortable. That’s not the same as your hunger hormones being switched off. There’s no research showing baking soda meaningfully reduces appetite—just that it causes gas.

Any fullness you feel is probably just bloating from the carbon dioxide reaction in your stomach, not a real appetite effect.

Claim 3: It boosts your metabolism

Verdict: False.

There’s no evidence that baking soda increases calorie burning or fat use. The metabolism claim doesn’t have research to back it up.

Baking soda doesn’t have what’s called a thermogenic effect—it doesn’t increase the rate at which your body burns calories or uses fat for fuel. There are ingredients with some evidence for modest metabolic effects, like caffeine and green tea catechins. Baking soda is not one of them. No clinical studies show it speeds up metabolism in any way that would lead to weight loss.

Is a baking soda and lemon juice shot safe?

A small amount of baking soda here and there is unlikely to cause lasting harm. Because this is such a familiar ingredient, it’s easy to assume there’s no real downside to doing it every day. But that may not be true for everyone. Here are a few things worth knowing.

Baking soda has a lot of sodium

One teaspoon of baking soda has about 1,200 milligrams of sodium—close to half the daily recommended limit for most adults. Even the smaller amount used in most shot recipes (about ¼ teaspoon) adds roughly 300 milligrams. Most people don’t register this as “sodium intake” the way they would with salty food, which means it can quietly add up. 

“If you’re watching your sodium for any reason—blood pressure, heart health, kidney issues—this is worth paying attention to,” reminds Hudspeth. 

Too much can throw off your body’s chemistry 

When you take in more baking soda than your body can balance out, it can push your blood pH higher than it should be. This is called metabolic alkalosis, and it can cause muscle twitching, nausea, confusion, and, in more serious cases, irregular heartbeat. A case report documented a hospitalization after a patient used sodium bicarbonate orally as an antacid—roughly 1 teaspoon in water daily, not an extreme amount—with significant disruptions to electrolyte levels, including dangerous drops in potassium and calcium.

The authors specifically noted that people tend to underestimate this risk because the ingredient is so ordinary and easy to get. “This is an important reminder that ‘natural’ and ‘safe’ aren’t the same thing,” says Hudspeth. 

It can affect how medications work 

Because baking soda changes the pH environment in your stomach, it can affect how your body absorbs certain medications. A review of antacid-drug interactions identified interactions with quinolone antibiotics, NSAIDs, and other drug classes. If you take any daily prescriptions, especially for blood pressure, diabetes, or heart conditions, it’s worth asking your doctor before making baking soda a regular habit.

Frequently asked questions about baking soda and lemon juice shots

What does drinking a baking soda and lemon shot actually do? 

For most people, it creates a CO₂ reaction in the stomach that causes gas and bloating, delivers a meaningful sodium hit, and then gets processed and cleared by your kidneys. The lemon and baking soda cancel each other out in the glass, so any alkalizing effect is gone before you swallow. An occasional shot is unlikely to cause lasting harm for healthy adults—it’s just not going to do anything useful for weight loss. 

Do baking soda and lemon juice reduce belly fat? 

No. There’s no clinical research showing this combination reduces belly fat or any other body fat. Baking soda doesn’t have any fat-burning properties, and the lemon neutralizes it before it has a chance to do anything anyway.

What actually happens when you mix baking soda and lemon juice? 

You get an acid-base reaction. Lemon juice (an acid) and baking soda (a base) react, produce carbon dioxide gas—that’s the fizz—and leave behind sodium citrate and water. Most of the alkalinity in the baking soda is used up in that reaction before the drink ever reaches your stomach.

Is baking soda and lemon juice good for you in any way? 

Both have their merits individually. Lemon juice is rich in vitamin C. Baking soda can relieve occasional heartburn when used appropriately. But as a daily shot combination, there’s no meaningful evidence of health benefits—and the sodium content alone makes it a poor choice as a regular habit for most people.

Can baking soda shots help with exercise performance? 

There’s real research here, but the context is very specific. Sodium bicarbonate may help with short, intense bursts of exercise by buffering acid buildup in muscles. The studies use measured doses timed carefully before high-intensity training—not casual morning shots. And GI side effects are common enough that even athletes have to test their tolerance carefully before relying on it.

The bottom line: Baking soda and lemon juice shots won’t cause weight loss

Baking soda and lemon shots aren’t a weight loss shortcut. The acid and base combo largely cancel each other out before anything reaches your body. And the alkalinity theory doesn’t match how your body actually works. Plus, the risks are worth taking seriously. 

“If someone wants a morning ritual that actually makes a difference, there are so many better options: a glass of water, a protein-forward breakfast, a walk outside,” says Hudspeth. “Those things have real evidence behind them. A baking soda shot doesn’t—and for some people, it could cause more problems than it solves.”

Sustainable weight loss doesn’t come from a morning shot. It comes from eating in a way you can actually keep up, moving in ways you enjoy, and understanding the patterns behind why you eat the way you do—which is exactly what Noom is built around.  

If you’re looking for evidence-backed ways to lose weight, programs at Noom can help. We combine behavior change strategies with medical support, helping you build habits that last while also addressing the biological side of weight loss. Learn more now.