7 Best Vitamins for Weight Loss in 2024

Although not everybody needs a multivitamin, some of the people most likely to benefit from these supplements are those eating in a caloric deficit. This is why we’ve created this list of the best vitamins for weight loss, to ensure you’re maintaining optimal nutrition while dieting. 

It’s important to note that you should try to prioritize getting all your nutrients from whole foods while you’re on a cut, with multivitamins simply being a convenient tool for ensuring optimal nutrition. We always recommend getting blood work done and consulting with your doctor to see if there are any vitamins, in particular, you should be focusing on. 

Also, any time we mention “vitamins that help with weight loss,” understand we’re talking about vitamins that support weight loss through added nutrition. None of the products on our list will increase your ability to lose weight, unless you’re deficient in vital micronutrients like for example zinc that as a result can potentially affect your thyroid function and limit your RMR 

For this article, our team of certified nutritionists and professional athletes collected 15 products reviewing them by 5 main parameters, and only top products made it to the list. We’ve spent 20+ hours testing most of the products and analyzing hundreds of user reviews online. We keep updating our list regularly so feel free to share your experience in the comments section.

Top 7 Best Vitamins for Weight Loss Reviewed

1. Kirkland Signature Daily Multi – Top-Pick
2. Nature Made Multi for Him
3. Sentry by 21st Century – Best Budget Pick
4. Bayer One A Day Women’s Complete
5. Whole Food Multivitamin by Kaged – Best Organic-Based Option
6. Deva Vegan Multivitamin & Mineral – Best Vegan Option
7. Multivitamin by Transparent Labs – Best with Ashwagandha

Product	Total	Overall Micros Breakdown	Capsules / Tablets per Serving	Nutrition Label Transparency	Third-Party Testing	Price / Quality
Kirkland Signature	49.5	10	10	9.5	10	10
Nature Made	49.5	9.5	10	10	10	10
21st Century	49	9.5	10	10	9.5	10
Bayer One A Day	49	9.5	10	10	9.5	10
Kaged	48.5	9.5	10	10	10	9
Deva	48.5	9.5	10	9.5	9.5	10
Transparent Labs	47	9	8.5	10	10	9.5

Starting our list, the best multivitamin for weight loss is Kirkland Signature’s Daily Multi. While there are some minor issues with how this supplement is dosed, ultimately you’ll be hard-pressed to find a better deal than Kirkland. 

In terms of dosing, Kirkland is a somewhat unbalanced supplement. Its vitamins range from 21-250% DV, with most falling slightly higher than 100%. The minerals are dosed in a more balanced manner, with most falling at exactly 100%. 

This supplement is high in iron containing 100% DV. This will be ideal for anyone looking to prioritize iron through their multivitamin. Although, 45mg/day is the UL for iron, so this may be excessive if you already get sufficient iron in your diet. 

The electrolytes (magnesium, phosphorus, potassium, etc.) are the exceptions, all being dosed between 2-24%. It’s worth noting this still has some of the highest calcium content out of all the products on our list at 15%. Keep in mind that high calcium content can affect iron absorption, so keep this in mind if iron intake is important to you. 

As mentioned above, Kirkland easily offers some of the best value for any multivitamin out there. At ~$0.05 per serving, Kirkland is one of the most affordable products on our list, without sacrificing quality.

Taking the runner-up spot on our list of weight loss vitamins is Nature Made’s Multi for Him. While this is labeled as a “for men” multivitamin, women can take it as well, just be aware that this supplement doesn’t contain any iron.

In terms of doses, Nature Made is fairly similar to Kirkland in that its doses are somewhat unbalanced. While most micros are dosed effectively, some are unnecessarily high. They average out to about 100% DV, but both vitamins and minerals have a wide range from 67%-750% for vitamins and 12-222% for minerals. 

Also, as mentioned this supplement doesn’t contain any iron. While this is fine for some who are sure they get enough iron, this will be one of the main nutrients of interest for most women and plenty of men as well! You’re also getting a solid 125% DV of Vitamin D, which will be ideal for those looking to take Vitamin D for weight loss support.

Calcium and Magnesium are the only 2 electrolytes included here, and they are both dosed fairly low at 12% and 24% respectively. 

While Nature Made is an all-around fairly similar supplement to Kirkland, it comes at a significantly higher price. While ~$0.14 per serving certainly isn’t too expensive for a multivitamin, keep this in mind if you’re looking for the best value possible.

Next on our list is our top budget pick, and the only multivitamin we could find that rivals the price of Kirkland. Overall 21st Century’s Sentry supplement is a solid alternative to our top pick.

In terms of ingredient doses, Sentry is pretty similar to Kirkland and Nature Made. Most of the minerals are dosed right at 100%, while the Vitamins are slightly more unbalanced, being dosed slightly higher than this. 

Like Kirkland, this supplement has iron dosed at 100% DV, which will be ideal for those looking to prioritize this ingredient. Also, similar to Nature Made you’ll be getting a high dose of Vitamin D at 125%. As with the top 2 options on our list, the electrolytes are dosed fairly low, ranging from 2-15%. Still, similar to Kirkland, the 15% dose of calcium is one of the highest on our list. 

Of course, the price of this supplement is its main advantage, despite still having a solid all-around formula. At only ~$0.04 per serving, Sentry narrowly beats out Kirkland as the cheapest product on our list.

Next on our list of vitamins to take for weight loss is one of the most recognizable supplement brands on the market, Bayer, with their One A Day Women’s Complete Multivitamin. As mentioned for Nature Made, although this is a “women’s” supplement, it would still make a great choice for most men!

As with the products above, Bayer has a fairly unbalanced formula with its vitamins ranging from 78-400% DV. Its minerals have a similar lack of balance, falling between 10-150%. 

With that being said, most key nutrients are dosed effectively here. You’ll be getting 125% DV of Vitamin D and 100% DV of Iron as well. The only 2 electrolytes included here are calcium and magnesium, both dosed fairly low at 10% each.

Finally, while Bayer’s price is still affordable at ~$0.11, it’s still notably more expensive than both Kirkland and 21st Century’s products.

Next on our list of weight management vitamins is Kaged, which is our top pick if you’re looking for an organic multivitamin sourced from whole food ingredients. Fair warning, this is also the most expensive product we’ll be covering by far. 

In terms of dosages, Kaged is inarguably the most balanced supplement on our list. Virtually all its vitamins and minerals are dosed at exactly 100% of your DV, making for optimal ingredient doses across the board.

The 2 exceptions to these doses are calcium and magnesium, which are dosed at 5% and 23% respectively. However, key micros like Vitamin D and Iron are both dosed at 100%.

As mentioned, this is an organic supplement with most of its micros being sourced from whole food ingredients. This is also the first vegan-friendly on our list. This will be ideal for you if you follow a plant-based, organic diet and want to avoid any unnecessary artificial ingredients in your multivitamin. 

Despite being an all-around optimal formula, the one glaring downside here is the price. One serving of Kaged will cost you ~$1.17, easily making this the most expensive product on our list.

Next up is another vegan-friendly multivitamin from Deva. Although Kaged is also an excellent vegan option, its high price point is far from ideal. Luckily, Deva offers a solid vegan multivitamin at a fraction of the price. 

Deva’s doses are fairly unbalanced, with vitamins ranging from 100-4167%. Meanwhile, its minerals are similarly unbalanced at 3-343%. Keep this in mind if you’re looking to avoid megadoses, and would prefer a supplement with more moderately dosed ingredients. 

You’ll be getting solid 100% doses of Vitamin D and Iron. As with most supplements on our list calcium and magnesium are both dosed pretty low at 8% and 10% respectively.  

As mentioned earlier, this will be your best bet if you’re after a budget-friendly vegan multivitamin. At only ~$0.15, Deva is significantly cheaper than the alternative with Kaged.

Closing out our list is one of the most trustworthy brands in the supplement space, Transparent Labs. While this is a somewhat unbalanced and pricy multivitamin, it is the only supplement on our list to contain the active ingredient Ashwagandha and Coenzyme Q10 as well, although neither of these are necessarily too beneficial as part of a multivitamin. 

As mentioned, the doses here have the widest range on our list. For vitamins, they range from 111-8333%, and for minerals you can expect 2-193%. While this isn’t necessarily too bad, remember that these megadoses do not necessarily make for a more effective supplement for everyone. It’s worth noting that this supplement contains an excellent form of B12. 

This is one of only 2 supplements on our list not to contain any iron. It also has the highest dose of Vitamin D on our list with 310% DV. Also, if you’re after magnesium for weight loss support, this may be a good option with 71% DV. However, it’s worth noting that it also doesn’t contain any calcium. 

As mentioned, you can expect 100mg of CoQ10, and a solid 300mg dose of Ashwagandha here as well. CoQ10 is an antioxidant, although there may be some potential side effects, so we recommend consulting with your doctor before use. While ashwagandha has a whole host of benefits including reducing stress and potentially increasing testosterone, it may not be the best ingredient for a multivitamin. 

This is because the long-term effects are not well-known, and you have minimal control over the dosage you’re getting. As a result, if you’re interested in ashwagandha, doing your research and taking it on its own may be a better course of action. 

Finally, in terms of price, this is nearly as expensive as Kaged at ~$1.00 per serving. Especially considering several of the flaws in Transparent Labs’ formula, this price is fairly tough to justify.

Do Vitamins Affect Weight Loss in the Absence of a Deficiency?

So, do vitamins help you lose weight? In short, vitamin supplements will have no effect on weight loss. The only way to effectively lose weight is to eat in a consistent caloric deficit, and if you’re not deficient in anything, multivitamins will have no direct effect on your ability to do this.

However, if you are deficient in one or more key micronutrients, supplementing with a multivitamin may have a major effect on your energy levels, in turn making it easier to exercise and get into a caloric deficit. 

With that being said, they may still be a useful supplement when trying to lose weight because of their nutritional benefits. When eating in a caloric deficit, it can be tough to hit all your nutritional goals. While you shouldn’t be restricting calories to the point of malnutrition, a multivitamin can be a good way to safeguard against any minor deficiencies you have while dieting. 

Overall, before running out to buy a multivitamin, we recommend getting blood work done and checking with your doctor to see what you may be deficient in. From here you can make a better choice on which multivitamin to buy, as well as being able to better optimize your weight loss diet. 

When Can Multivitamin Supplements Be Beneficial?

As mentioned above, multivitamins won’t help you lose weight beyond improving your overall nutrition when eating in a caloric deficit. Below we’ll be covering some scenarios where taking a multivitamin is probably a good idea. 

✅ If You Are Following an Aggressive Calorie Deficit

First, if you’re eating in an aggressive caloric deficit of more than 500 calories, you’re increasing the likelihood of becoming deficient in one or more key nutrients. In this case, a multivitamin will help you maintain better health in a major calorie deficit. 

However, you’re likely much better off eating in a more moderate deficit of 250-500 calories to ensure more sustainable weight loss. On top of this, it will be easier for you to reach all your nutritional goals without the use of a multivitamin. 

✅ In Conditions of Prolonged Periods of Energy Restriction

While it will be easier to maintain a more balanced diet with a moderate deficit, if you’re doing so for a prolonged period you may still develop some deficiencies. In this case, using a multivitamin may be beneficial for optimizing nutrition while maintaining a deficit. 

Similar to the point above, if your diet is leading to malnutrition, it may be a good idea to switch things up – especially if you’ve been eating in a deficit for an extended period. By eating slightly more – either at maintenance or in a small surplus – you may find it easier to hit all your micronutrient goals without a supplement. 

✅ If You Have Malabsorption Conditions or Food Intolerances

One of the best reasons to start using a multivitamin supplement is if you’re dealing with any malabsorption conditions. In this case, no matter how balanced your diet is, you may still not be able to get adequate amounts of certain micronutrients. 

By strategically implementing a multivitamin, you may be able to give your body enough of a certain vitamin or mineral that you have difficulty getting enough of through food alone.  Be sure you are checking that with your healthcare provider to understand the mechanism behind your malabsorption to choose the right supplement (or its form) for your “condition”.

✅ If You Exclude Entire Food Groups

Finally, while getting enough nutrients on a caloric deficit is difficult enough, it can be even more difficult if you’re eating a restrictive diet. This includes vegan, vegetarian, keto, or any other diet that limits the foods you can eat. 

While keto diets can be beneficial for certain medical conditions, they may also lead to vitamin deficiencies. This also applies to vegans and vegetarians. In this case, a multivitamin may be a good way to safeguard against any deficiencies if you want to maintain a specific diet.

How to Choose the Best Vitamins for Weight Loss?

If you’re looking to use a multivitamin to assist weight loss, there are a few key things you’ll want to look out for which we’ll be covering in more depth below. 

1. Consider Supplementing With USP or Other Recognized Certifications

First, it’s always a good idea to check for third-party certifications when buying supplements. These are a good way to ensure a high level of quality in the manufacturing process. Typically supplements from more reputable brands will have stronger third-party certifications. 

Regardless, it’s always good to double-check certifications to make sure you’re getting a great product. As a result, this is one of the main factors we considered when choosing the supplements for our list. 

2. Avoid Megadoses 

While megadoses may occasionally be justified in cases of poor absorption, the vast majority of the time they are completely unnecessary. As a result, we prioritized supplements that have more balanced formulas where ingredients fall around 100% DV. 

3. Pay Attention to Calcium 

While we’ve made it clear that multivitamin use won’t have a major effect on your ability to lose weight, you may want to pay attention to calcium if this is your goal. This is because research suggests that calcium intake may help with fat metabolism and managing body composition. 

However, it’s unlikely that additional supplementary calcium will have any effect on this. If you want to prioritize calcium in your multivitamin, Kirkland and 21st Century will be your 2 best options on our list. 

4. Do Not Self-Prescribe Supplements

Finally, as we’ve stressed throughout this article, be sure you consult with your doctor before picking a multivitamin supplement. By getting your blood work done, you can see if you even need a multivitamin. If you do, you can get a better idea as to which micronutrients you need to prioritize. 

How to Lose Weight With or Without Supplements?

While multivitamins likely won’t have any effect on weight loss, we can give you a couple of tips for losing weight effectively. These include your total caloric intake, protein consumption, and training, which we’ll be covering more in-depth below.

1. Follow a Calorie Deficit and Flexible Diet

First, the most important part of losing weight will always be eating in a caloric deficit. If you consistently eat below your maintenance calories, you will lose weight. However, it’s also important to not be too restrictive. 

We recommend sticking to a modest caloric deficit of 250-500 calories to promote healthy weight loss. Also, there’s nothing wrong with indulging from time to time and occasionally enjoying “unhealthy” food. You’re more likely to stick to a diet if it’s flexible, so go easy on yourself! 

2. Eat Enough Protein

To maintain muscle while losing weight, it’s also crucial to eat enough protein. The general guideline for protein intake is 0.7-1g per pound of bodyweight if you’re trying to build or maintain muscle. 

You can still lose weight by eating less protein than this as long as you’re in a caloric deficit. However, we don’t recommend this as your main goal should be to burn fat, not muscle. While a little muscle loss is inevitable, you should try and limit this as much as possible. Please understand that proteins are extremely important for your body aside from muscle tissue. 

3. Do Strength Training

Similar to the point above, it’s important to practice some form of resistance training on a diet to maintain muscle. We recommend following a program that hits all your major muscle groups 1-2 times a week. If you’re new to resistance training, you may even be able to gain muscle while losing fat, often referred to as body recomposition! In some cases when people are considering losing weight, there is actual need for more muscle mass, not really a fat loss. 

4. Add Some Cardio and Be Patient

Finally, if you’re struggling to maintain a caloric deficit, don’t be afraid to hop on the treadmill and get some cardio in. This will help you burn more calories throughout the day, making it easier to maintain a consistent deficit. 

Also, be patient! Remember that weight loss is a marathon, not a sprint. You’ll lose more weight over time making small amounts of consistent progress rather than massive leaps of major progress. So go easy on yourself, and remember it will take time to accomplish your goals. 

FAQ

Does B12 Burn Belly Fat?

While B12 is beneficial for all sorts of bodily functions including disease prevention and cognitive health, there’s no evidence to support its use as a weight loss supplement. The only way to consistently lose weight is to be in a caloric deficit. 

Does B12 Speed Up Metabolism?

There is no evidence to suggest that B12 will speed up your metabolism. If you’re deficient, B12 supplementation will likely improve your energy levels, so it may end up increasing the amount of calories you burn on average throughout the day. However, if you’re not deficient in anything, using vitamins for weight loss and metabolism will not be effective. 

What Vitamins Burn Belly Fat?

There are no vitamins that burn fat magically with regular supplementation. It should also be pointed out that there’s no way to “spot reduce” belly fat. The only way to burn belly fat is to lower your total body fat percentage, which can only be done through eating in a consistent caloric deficit, or adding more muscle mass. 

Conclusion

While multivitamin supplements won’t necessarily help you lose weight, they can be a beneficial supplement for those on weight loss diets for the nutritional support they provide. With that being said, we recommend consulting with your doctor to see if the use of a multivitamin is necessary for you. 

If you do want a high-quality multivitamin supplement for weight loss, our top pick is Kirkland Signature Daily Multi.

Are you currently following a weight-loss diet? What’s your opinion on vitamins that aid in weight loss? Let us know your thoughts in the comments below!

Also read:

• Best Supplements and Vitamins for Intermittent Fasting
• Best Organic Multivitamin
• Best Multivitamin for Men Over 40
• Best Vitamin D3 and K2 Supplements
• Best Multivitamin for Bodybuilding
• Best Gummy Vitamins
• Best Vitamins for Weight Gain

References

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2. Chad M. Kerksick, “ISSN exercise & sports nutrition review update: research & recommendations” Journal of the International Society of Sports Nutrition Volume 15, Article number: 38 (2018).
3. Akhgarjand C, et. al, “Does Ashwagandha supplementation have a beneficial effect on the management of anxiety and stress? A systematic review and meta-analysis of randomized controlled trials.” Phytother Res. Nov;36(11):4115-4124. (2022).
4. R. Morgan Griffin, “Coenzyme Q10”, WebMD, https://www.webmd.com/diet/supplement-guide-coenzymeq10-coq10 (Accessed Dec. 10, 2023). 
5. Lopresti AL, et. al, “An investigation into the stress-relieving and pharmacological actions of an ashwagandha (Withania somnifera) extract: A randomized, double-blind, placebo-controlled study.” Medicine (Baltimore). Sep;98(37). (2019).
6. Stephen J Smit, et. al, “Examining the Effects of Herbs on Testosterone Concentrations in Men: A Systematic Review” Adv Nutr. 2021 May; 12(3): 744–765The Nutrition Source, “Vitamin B12,” Harvard T.H. Chan School of Public Health, https://www.hsph.harvard.edu/nutritionsource/vitamin-b12/ (Accessed Dec. 10, 2023)