Vitamin intake became a crucial part of my life after bariatric surgery — but my journey with it started long before I even understood how important it would be.

In 2010, after my first pregnancy and after reaching obesity in 2009, I made the decision to undergo bariatric surgery. At that moment, my goal was deeply personal: I wanted to recognize myself again, rebuild my self-esteem, and take care of my body in a way I hadn’t been able to for a long time.

The surgery truly changed my life and helped me in many ways. However, it’s also a decision that requires a lot of thought and responsibility. Bariatric surgery is not just about weight loss — it’s about committing to lifelong care.

Meanwhile, one of the most important parts of that commitment is maintaining proper nutrition and staying consistent with vitamin supplementation.

After surgery, absorption changes significantly. As a result, even when I eat well, I still rely on vitamins to support my energy, health, and daily routine.

Over time, I’ve learned something essential: balance is everything. Taking too little can lead to deficiencies, while taking too much can also harm your body.

That’s why I closely monitor my health with regular exams and visit my doctor at least twice a year to adjust my routine when needed.

After going through bariatric surgery, I quickly realized that maintaining proper nutrition is not just about eating better — it’s about understanding how your body actually absorbs nutrients.

Meanwhile, even when I try to follow a balanced diet, there are specific nutrients that tend to become more challenging to maintain over time.

For example, some of the most common deficiencies after bariatric surgery include:

• Vitamin B12
• Vitamin D
• Iron
• Calcium
• Protein

However, not all of these impact me in the same way.

Over time, I started noticing that some deficiencies affect my daily life much more than others — especially when it comes to energy, focus, and overall well-being.

Because of that, I pay closer attention to a few key nutrients that make a real difference in how I feel day to day.

Iron, Ferritin, and Vitamin B12: The Deficiencies That Impact Me the Most

Among all the changes I experienced after bariatric surgery, the ones that affected me the most were related to iron, ferritin, and vitamin B12.

These nutrients are directly connected to energy levels, focus, and overall well-being. Meanwhile, when they are low, the effects are very noticeable in my daily life.

For example, when my iron and ferritin levels drop, I start to feel:

• Extreme fatigue
• Low energy, even after resting
• Weakness during workouts
• Difficulty concentrating

In addition, low vitamin B12 can also lead to:

• Mental fog
• Lack of motivation
• Dizziness
• Increased risk of anemia

Because of how bariatric surgery affects absorption, maintaining healthy levels of these nutrients requires ongoing attention.

Meanwhile, this is not something I manage on my own — I rely on regular blood tests and adjust my vitamin routine based on my results.

How I Currently Supplement Vitamin B12, Iron, and Ferritin

Over the years, I’ve tested different approaches to supplementation. However, I’ve learned that what works for me today is a combination of daily supplements and medical support when needed.

Vitamin B12

For vitamin B12, I use a supplement specifically designed for bariatric patients.

👉 Bariatric Fusion Vitamin B12

It comes in a dissolvable tablet, which helps with absorption — something that is especially important after bariatric surgery.

Meanwhile, this supplement helps me maintain my vitamin B12 levels within a healthy range most of the time.

However, when my levels drop too much, I need to get B12 infusions, which I usually do at my primary care doctor’s office.

Iron and Ferritin

Iron and ferritin have been the most challenging part of my journey over the past 16 years after surgery.

At the beginning, I struggled a lot because I couldn’t find a supplement that my body would properly absorb.

It was only after moving to the U.S. that I found a better option:

👉 Bariatric Fusion Iron

This supplement works better for me in terms of absorption. However, even with daily supplementation, it’s still not enough to keep up with my body’s needs.

Because of that, I usually need to do iron infusions once or twice a year to bring my levels back up.

And I can feel very clearly when my iron is low.

When I delay these infusions, it directly impacts my life. I feel:

• Extremely tired
• Unmotivated to get out of bed
• Without energy to work out
• Mentally drained

Sometimes, it even feels like my overall motivation and outlook on life decrease.

Vitamin D for Overall Health

Another essential part of my vitamin routine is vitamin D.

It supports:

• Bone health
• Immune function
• Overall well-being

Meanwhile, many people already have low levels of vitamin D, even without bariatric surgery.

In my case, this is something I manage with medical guidance. My dosage is based on my lab results, which means it’s not something I supplement on my own.

Because of that, I always recommend checking your levels and following a doctor’s recommendation to maintain proper nutrition and avoid imbalances.

Multivitamin for Daily Nutrition Coverage

A good multivitamin helps cover the foundation of your daily nutrition.

It ensures that even on days when my diet is not perfect, I’m still supporting my body with essential nutrients through consistent vitamin intake.

Meanwhile, this becomes especially important after bariatric surgery, when absorption is not always predictable.

👉 One A Day Multivitamin for Women

Protein Powder and Whey Protein for Daily Nutrition

Getting enough protein is one of the biggest challenges after bariatric surgery.

That’s why I use protein powder regularly — especially whey protein — to help meet my daily nutrition goals.

For example:

• I use whey protein in recipes
• I make protein ice cream
• I prepare quick, high-protein snacks

Meanwhile, this helps me maintain muscle mass, improve recovery, and feel more satisfied throughout the day.

If you’re looking for ideas, I shared some of my favorite recipes in my article about protein ice cream, where I show how I turn protein powder into easy, high-protein desserts at home.

👉 Ice Cream Protein Recipes Using Ninja Creami

A Quick Note About the Protein Powder I Use

The whey protein I personally use works really well for me in terms of taste, texture, and consistency — especially for recipes.

👉 Optimum Nutrition Gold Standard 100% Whey Protein Powder

However, I want to be transparent: it contains sucralose.

I know this can be a concern for some people, especially with how much it’s discussed on social media.

From my experience, it works well for my routine and helps me stay consistent with my protein intake — which, for me, is a priority.

That said, if you don’t feel comfortable with sucralose, you can absolutely choose a more “natural” protein powder like Ascent 100% Whey Protein Powder.

Just keep in mind:

• These options are usually more expensive
• The taste and texture are often not as good
• They may not work as well in recipes like protein ice cream

Meanwhile, the best choice is always the one you can stick to consistently.

Creatine for Strength and Performance

Creatine is one of my favorite supplements, especially for workouts.

It helps with:

• Strength
• Performance
• Muscle recovery

Meanwhile, creatine is one of the most researched supplements and is considered safe when used correctly.

However, like everything else, it should be used responsibly and ideally with professional guidance.

👉 Optimum Nutrition Micronized Creatine Monohydrate Powder

Gut Health Support: Probiotics and Fiber

Another important part of my routine is supporting my gut health.

After bariatric surgery, digestion and absorption can change significantly. Because of that, maintaining a healthy gut becomes an important part of overall nutrition.

Instead of relying only on supplements, I prefer to support this more naturally through my diet.

For example, I include:

• Vegetables and leafy greens
• Chia seeds
• Psyllium
• Fiber-rich foods

Meanwhile, these foods help support digestion and create a better environment for healthy gut bacteria.

Although probiotics can also be helpful, I personally focus on building these habits daily through what I eat at home.

Pre-Workout: When I Need Extra Energy

On some days, I also use a pre-workout supplement.

Meanwhile, I don’t take it every day — only when I feel like I need an extra boost before training.

Because pre-workout formulas often contain stimulants, it’s important to understand how your body reacts and avoid overuse.

👉 Optimum Nutrition Gold Standard Pre Workout with Creatine

The Importance of Monitoring Your Vitamin Levels

This is one of the most important parts of maintaining a consistent vitamin routine.

No supplementation should be done blindly.

For example:

• Each body is different
• Each surgery is different
• Each absorption level is different

That’s why I:

• Do regular blood tests
• Adjust my vitamin intake when needed
• Visit my doctor at least twice a year

Meanwhile, this approach helps me stay balanced and avoid both deficiencies and excess.

Too Much or Too Little Vitamin Intake Can Be Harmful

One of the biggest lessons I’ve learned is that more is not always better when it comes to vitamin supplementation.

In fact:

• Too little vitamin intake → deficiencies, fatigue, and health issues
• Too much vitamin intake → toxicity and imbalances

For example:

• Excess vitamin D can be harmful
• Too much iron can cause serious problems

Meanwhile, maintaining balance is the key to long-term health and sustainable nutrition.

Final Thoughts on Building a Sustainable Vitamin Routine

Creating a consistent vitamin routine after bariatric surgery is essential for maintaining proper nutrition, energy, and overall well-being.

In my case, combining:

• vitamin supplementation
• protein powder and whey protein
• creatine
• probiotics

has made a big difference in my daily life.

However, I always stay flexible and adjust everything based on my body’s needs and medical guidance.