Overview
![Solgar Solgar B-Complex "100"](https://m.media-amazon.com/images/I/41OvoQlDt2L._SL500_.jpg "Solgar Solgar B-Complex "100"")
SCIENTIFIC SCORE
Moderately Effective
Based on 12 Researches
8
USERS' SCORE
Good
Based on 10 Reviews
8.2
Supplement Facts
Serving Size: 1 Vegetable capsule
Amount Per Serving
%DV
Thiamin (vitamin B1) (as thiamin mononitrate)
100 mg
8,333%
Riboflavin (vitamin B2)
100 mg
7,692%
Niacin (vitamin B3) (as niacinamide)
100 mg
625%
Vitamin B6 (as pyridoxine HCl)
100 mg
5,882%
Folate
666 mcg DFE(400 mcg folic acid)
167%
Vitamin B12 (as cyanocobalamin)
100 mcg
4,167%
Biotin (as d-biotin)
100 mcg
333%
Pantothenic Acid (vitamin B5) (as d-calcium pantothenate)
100 mg
2,000%
Choline (as choline bitartrate)
20 mg
4%
Inositol
100 mg
**
Top Medical Research Studies
9
Our investigation looked into how Vitamin B affects behavior and neurotransmitter levels in rats undergoing stress-induced depression.
We set up three groups: a control group, a stressed group, and a stressed group receiving Vitamin B.
The results showed that Vitamin B improved neurotransmitter levels and reduced anxiety and depression-like behaviors in the rats. This suggests that Vitamin B could be beneficial in improving symptoms of depression driven by stress.
We set up three groups: a control group, a stressed group, and a stressed group receiving Vitamin B.
The results showed that Vitamin B improved neurotransmitter levels and reduced anxiety and depression-like behaviors in the rats. This suggests that Vitamin B could be beneficial in improving symptoms of depression driven by stress.
Read More
8
This study examined how dietary vitamin B6 and plasma levels of pyridoxal 5’-phosphate relate to depression in US adults. We analyzed data from nearly 25,000 people over five years, revealing that those with the highest vitamin B6 intake and plasma levels experienced a lower risk of depression.
Although these results are promising and suggest the benefits of a vitamin B6-rich diet, we also noted that further randomized controlled trials are needed to better understand the effects of vitamin B6 supplementation on mood.
Although these results are promising and suggest the benefits of a vitamin B6-rich diet, we also noted that further randomized controlled trials are needed to better understand the effects of vitamin B6 supplementation on mood.
Read More
8
Niacin shows promise for depression
We investigated how niacin (vitamin B3) impacts depression, particularly through a mouse model using lipopolysaccharide to induce depressive behaviors.
The study revealed that niacin significantly reduced signs of despair in mice, leading to more mobility in forced swimming tests.
It not only boosted important brain chemicals but also activated protective pathways that lessen neuroinflammation associated with depression.
Overall, the findings suggest that niacin could be a promising option for managing depression by addressing key neuroprotective mechanisms.
The study revealed that niacin significantly reduced signs of despair in mice, leading to more mobility in forced swimming tests.
It not only boosted important brain chemicals but also activated protective pathways that lessen neuroinflammation associated with depression.
Overall, the findings suggest that niacin could be a promising option for managing depression by addressing key neuroprotective mechanisms.
Read More
Most Useful Reviews
9
Improved mood significantly
4 people found this helpful
These vitamins are excellent! I suggested them to my husband when he was feeling depressed and dissatisfied. After taking one capsule daily, his mood and energy improved noticeably within days!
Read More
9
Reduced mood swings
3 people found this helpful
I had been worried about joint pain and headaches, falling into depression. After a week of taking these vitamins, I noticed less pain and more energy. They support my cardiovascular and nervous systems effectively.
Read More
9
Resolves chronic fatigue
My endocrinologist recommended these vitamins for my chronic fatigue and depression. I felt revitalised after taking them alongside Vitamin D; now I manage my day much better!
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 12 Researches
8
- All Researches
9.5
We explored a remarkable case of a 58-year-old cancer patient who exhibited depressive symptoms potentially linked to thiamine deficiency (TD). Initially suspected of having major depressive disorder, her condition transformed dramatically after receiving intravenous thiamine.
Within an hour of treatment, her distressing symptoms—palpitations, dyspnea, and suicidal thoughts—significantly improved. This observation underscores the importance of considering TD as a reversible cause when patients present with depression-like symptoms, especially in serious cases involving cancer.
Within an hour of treatment, her distressing symptoms—palpitations, dyspnea, and suicidal thoughts—significantly improved. This observation underscores the importance of considering TD as a reversible cause when patients present with depression-like symptoms, especially in serious cases involving cancer.
Read More
9
Our investigation looked into how Vitamin B affects behavior and neurotransmitter levels in rats undergoing stress-induced depression.
We set up three groups: a control group, a stressed group, and a stressed group receiving Vitamin B.
The results showed that Vitamin B improved neurotransmitter levels and reduced anxiety and depression-like behaviors in the rats. This suggests that Vitamin B could be beneficial in improving symptoms of depression driven by stress.
We set up three groups: a control group, a stressed group, and a stressed group receiving Vitamin B.
The results showed that Vitamin B improved neurotransmitter levels and reduced anxiety and depression-like behaviors in the rats. This suggests that Vitamin B could be beneficial in improving symptoms of depression driven by stress.
Read More
8
We explored the effects of a newly developed zinc-acetyl-l-carnitine complex on depression and neuroprotection. This innovative compound showed a remarkable 54% increase in antidepressant activity compared to standard acetyl-l-carnitine.
Additionally, it demonstrated the ability to alleviate pain and protect nerve cells against damage. While the results are promising, further studies are needed to fully understand its long-term effectiveness and safety for depression and related conditions.
Additionally, it demonstrated the ability to alleviate pain and protect nerve cells against damage. While the results are promising, further studies are needed to fully understand its long-term effectiveness and safety for depression and related conditions.
Read More
8
We explored whether combining antidepressants with low-dose methylfolate could improve outcomes for patients with depressive disorder. In this open-label trial, 44 participants received standard antidepressant treatment along with 800 µg of methylfolate daily for four weeks.
We used questionnaires to gauge depression levels throughout the study. The results suggested that this combination therapy might enhance treatment effectiveness compared to antidepressant monotherapy. Overall, it signals a promising avenue for those battling depression, pointing toward an approachable and potentially beneficial treatment strategy.
We used questionnaires to gauge depression levels throughout the study. The results suggested that this combination therapy might enhance treatment effectiveness compared to antidepressant monotherapy. Overall, it signals a promising avenue for those battling depression, pointing toward an approachable and potentially beneficial treatment strategy.
Read More
8
This study examined how dietary vitamin B6 and plasma levels of pyridoxal 5’-phosphate relate to depression in US adults. We analyzed data from nearly 25,000 people over five years, revealing that those with the highest vitamin B6 intake and plasma levels experienced a lower risk of depression.
Although these results are promising and suggest the benefits of a vitamin B6-rich diet, we also noted that further randomized controlled trials are needed to better understand the effects of vitamin B6 supplementation on mood.
Although these results are promising and suggest the benefits of a vitamin B6-rich diet, we also noted that further randomized controlled trials are needed to better understand the effects of vitamin B6 supplementation on mood.
Read More
User Reviews
USERS' SCORE
Good
Based on 10 Reviews
8.2
- All Reviews
- Positive Reviews
- Negative Reviews
9
Improved mood significantly
4 people found this helpful
These vitamins are excellent! I suggested them to my husband when he was feeling depressed and dissatisfied. After taking one capsule daily, his mood and energy improved noticeably within days!
Read More
9
Reduced mood swings
3 people found this helpful
I had been worried about joint pain and headaches, falling into depression. After a week of taking these vitamins, I noticed less pain and more energy. They support my cardiovascular and nervous systems effectively.
Read More
9
Resolves chronic fatigue
My endocrinologist recommended these vitamins for my chronic fatigue and depression. I felt revitalised after taking them alongside Vitamin D; now I manage my day much better!
Read More
7.5
Combats lack of energy
I find this great vitamin B complex helpful, especially alongside a stress formula. It's beneficial for those dealing with depression and low energy levels.
Read More
7.5
Supports depression treatment
22 people found this helpful
Vitamin B complex supports the nervous and immune systems at a high dosage. It aids in treating depression and apathy. Don’t worry about the bright urine colour; excess vitamins are simply excreted.
Read More
Frequently Asked Questions
9
Improved mood significantly
4 people found this helpful
These vitamins are excellent! I suggested them to my husband when he was feeling depressed and dissatisfied. After taking one capsule daily, his mood and energy improved noticeably within days!
9
Reduced mood swings
3 people found this helpful
I had been worried about joint pain and headaches, falling into depression. After a week of taking these vitamins, I noticed less pain and more energy. They support my cardiovascular and nervous systems effectively.
9
Resolves chronic fatigue
My endocrinologist recommended these vitamins for my chronic fatigue and depression. I felt revitalised after taking them alongside Vitamin D; now I manage my day much better!
7.5
Boosts emotional health
3 people found this helpful
This product is great! B-Complex enhances bowel function, skin health, emotional wellbeing, and helps manage stress, depression, and fatigue. I really liked it.
7.5
Combats lack of energy
I find this great vitamin B complex helpful, especially alongside a stress formula. It's beneficial for those dealing with depression and low energy levels.
7.5
Supports depression treatment
22 people found this helpful
Vitamin B complex supports the nervous and immune systems at a high dosage. It aids in treating depression and apathy. Don’t worry about the bright urine colour; excess vitamins are simply excreted.
7.5
Alleviates stress
These B complex vitamins aid in converting nutrients into energy, reducing fatigue and stress while supporting the cardiovascular and nervous systems. They are crucial for maintaining good health and combatting depression.
9
Our investigation looked into how Vitamin B affects behavior and neurotransmitter levels in rats undergoing stress-induced depression.
We set up three groups: a control group, a stressed group, and a stressed group receiving Vitamin B.
The results showed that Vitamin B improved neurotransmitter levels and reduced anxiety and depression-like behaviors in the rats. This suggests that Vitamin B could be beneficial in improving symptoms of depression driven by stress.
We set up three groups: a control group, a stressed group, and a stressed group receiving Vitamin B.
The results showed that Vitamin B improved neurotransmitter levels and reduced anxiety and depression-like behaviors in the rats. This suggests that Vitamin B could be beneficial in improving symptoms of depression driven by stress.
8
We explored the effects of a newly developed zinc-acetyl-l-carnitine complex on depression and neuroprotection. This innovative compound showed a remarkable 54% increase in antidepressant activity compared to standard acetyl-l-carnitine.
Additionally, it demonstrated the ability to alleviate pain and protect nerve cells against damage. While the results are promising, further studies are needed to fully understand its long-term effectiveness and safety for depression and related conditions.
Additionally, it demonstrated the ability to alleviate pain and protect nerve cells against damage. While the results are promising, further studies are needed to fully understand its long-term effectiveness and safety for depression and related conditions.
8
We explored whether combining antidepressants with low-dose methylfolate could improve outcomes for patients with depressive disorder. In this open-label trial, 44 participants received standard antidepressant treatment along with 800 µg of methylfolate daily for four weeks.
We used questionnaires to gauge depression levels throughout the study. The results suggested that this combination therapy might enhance treatment effectiveness compared to antidepressant monotherapy. Overall, it signals a promising avenue for those battling depression, pointing toward an approachable and potentially beneficial treatment strategy.
We used questionnaires to gauge depression levels throughout the study. The results suggested that this combination therapy might enhance treatment effectiveness compared to antidepressant monotherapy. Overall, it signals a promising avenue for those battling depression, pointing toward an approachable and potentially beneficial treatment strategy.
8
Niacin shows promise for depression
We investigated how niacin (vitamin B3) impacts depression, particularly through a mouse model using lipopolysaccharide to induce depressive behaviors.
The study revealed that niacin significantly reduced signs of despair in mice, leading to more mobility in forced swimming tests.
It not only boosted important brain chemicals but also activated protective pathways that lessen neuroinflammation associated with depression.
Overall, the findings suggest that niacin could be a promising option for managing depression by addressing key neuroprotective mechanisms.
The study revealed that niacin significantly reduced signs of despair in mice, leading to more mobility in forced swimming tests.
It not only boosted important brain chemicals but also activated protective pathways that lessen neuroinflammation associated with depression.
Overall, the findings suggest that niacin could be a promising option for managing depression by addressing key neuroprotective mechanisms.
References
- Chen J, Liu J, Zhang P, Zhang S. [Effects of Vitamin B on Behaviors, Brain Monoamine Neurotransmitters, and Brain-Derived Neurotrophic Factor in Depressive Rats]. Sichuan Da Xue Xue Bao Yi Xue Ban. 2025;56:206. doi:10.12182/20250160608
- Caro-Ramírez JY, Bazán LO, Piro OE, Echeverría GA, Jori K, et al. Exploring Zn(II)-Acetyl l-carnitine complex for simultaneous management of depression, chronic pain, and neuroprotection. J Inorg Biochem. 2025;267:112857. doi:10.1016/j.jinorgbio.2025.112857
- Siddique A, Khokhar MM, Waheed A, Naeem U, Aziz SA. Effect of combination therapy of methylfolate with antidepressants in patients with depressive disorder. BMC Pharmacol Toxicol. 2025;26:14. doi:10.1186/s40360-025-00846-x
- Lu J, Mao H, Tan Y, Luo G. Associations of Dietary Intake of Vitamin B6 and Plasma Pyridoxal 5'-Phosphate Level With Depression in US Adults: Findings From NHANES 2005-2010. Brain Behav. 2024;14:e70128. doi:10.1002/brb3.70128
- Samad N, Hameed A, Manzoor N, Shoukat S, Irfan A, et al. Antioxidant and neuro-modulatory effects of niacin prevent D-galactose-induced behavioral deficits and memory impairment. Exp Gerontol. 2024;198:112624. doi:10.1016/j.exger.2024.112624
- Stein G, Aly JS, Manzolillo A, Lange L, Riege K, et al. Transthyretin Orchestrates Vitamin B12-Induced Stress Resilience. Biol Psychiatry. 2025;97:54. doi:10.1016/j.biopsych.2024.07.009
- Pahlavani H, Masoudi M, Khoshroo N, Kakhki S, Mahdi Rezavanimehr M, et al. Vitamin B reversed anxiety and depression induced by adolescent nicotine withdrawal through alteration the inflammatory, oxidative and serotoninergic profiles in male rats. Biochem Pharmacol. 2023;217:115832. doi:10.1016/j.bcp.2023.115832
- Abdel Rasheed NO, Shiha NA, Mohamed SS, Ibrahim WW. SIRT1/PARP-1/NLRP3 cascade as a potential target for niacin neuroprotective effect in lipopolysaccharide-induced depressive-like behavior in mice. Int Immunopharmacol. 2023;123:110720. doi:10.1016/j.intimp.2023.110720
- Ishida M, Sato S, Sato I, Yoshioka A, Uchida N, et al. What can cause cancer patients to attempt suicide? Thiamine deficiency mimicking the symptoms of major depressive disorder. Palliat Support Care. 2024;22:205. doi:10.1017/S1478951523001128
- Lagzi N, Bateni A, Goli R, Talebiazar N. The effect of multivitamins on anxiety and depression in patients undergoing methadone maintenance treatment: A double-blind randomized controlled trial. Int J Psychiatry Med. 2023;58:576. doi:10.1177/00912174231179320
- Tuo LJ, Song XY, Zhu YY, He HN, Song YP, et al. Gestational folic acid supplement prevents vitamin D deficiency-induced depression-like behavior by reversing cortical DNA hypomethylation in adult offspring. J Steroid Biochem Mol Biol. 2023;231:106313. doi:10.1016/j.jsbmb.2023.106313
- Pan LA, Segreti AM, Wrobleski J, Shaw A, Hyland K, et al. Metabolomic disorders: confirmed presence of potentially treatable abnormalities in patients with treatment refractory depression and suicidal behavior. Psychol Med. 2023;53:6046. doi:10.1017/S0033291722003233
