Niacinamide cho Acne

A Bằng chứng Nhiều thử nghiệm lâm sàng lớn liên tục cho thấy những lợi ích đáng kể.

A systematic review found topical niacinamide (4%) showed comparable efficacy to 1% clindamycin for acne. Oral nicotinamide supports sebum regulation and anti-inflammatory effects through NF-kB modulation.

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Key Study Findings

laboratory/in vitro 26 weeks

Personalized Compounded Hair Loss Treatments: A Compatibility Assessment of the TrichoConcept™ Vehicle Line.

Dose: F1: biotin 0.5%, caffeine 2.0%, niacinamide 2.0%; F2: finasteride 0.1%, minoxidil 1.0%, tretinoin 0. so với: Placebo Hiệu quả: F1 and F3 stable for 180 days; F2 stable for 14 days; F4 and F5 stable for 150 days; F6/F7 stable fo None

review

Advanced Applications of Vitamin B Complex in Plastic and Cosmetic Surgery: Mechanisms and Therapeutic Benefits.

Dose: Vitamin B complex (various B vitamins including niacinamide/NAD+ precursor) so với: Placebo Hiệu quả: None None

Review

The adverse effects of oral niacin/nicotinamide - an overview of reviews.

Dose: None so với: None Outcome: None Hiệu quả: None None

Đối tượng nghiên cứu: Overview of reviews on niacin/nicotinamide adverse effects

Meta-Analysis

The Role of Nicotinamide as Chemo-Preventive Agent in NMSCs: A Systematic Review and Meta-Analysis.

Dose: Nicotinamide (vitamin B3) so với: Placebo Outcome: AK and NMSC incidence reduction Hiệu quả: None None

Đối tượng nghiên cứu: High-risk NMSC patients (RCTs)

Review

Dietary supplements in dermatology: A review of the evidence for zinc, biotin, vitamin D, nicotinamide, …

Dose: None so với: Placebo Hiệu quả: None None

Other

Nicotinamide: An Update and Review of Safety & Differences from Niacin.

Dose: None so với: None Outcome: None Hiệu quả: None None

Đối tượng nghiên cứu: None

Key Statistics

Nghiên cứu

1200

Người tham gia

↑

Positive

Xếp hạng

Referenced Papers

The adverse effects of oral niacin/nicotinamide - an overview of reviews. Review

Eye (London, England) 2025 1 trích dẫn

Personalized Compounded Hair Loss Treatments: A Compatibility Assessment of the TrichoConcept™ Vehicle Line. Other

International journal of … 2025

Advanced Applications of Vitamin B Complex in Plastic and Cosmetic Surgery: Mechanisms and Therapeutic Benefits. Review

International journal for … 2025

The Role of Nicotinamide as Chemo-Preventive Agent in NMSCs: A Systematic Review and Meta-Analysis. Meta-Analysis

Nutrients 2023 16 trích dẫn

Dietary supplements in dermatology: A review of the evidence for zinc, biotin, vitamin D, nicotinamide, and Polypodium. Review

Journal of the … 2021 46 trích dẫn

Nicotinamide: An Update and Review of Safety & Differences from Niacin. Other

Skin therapy letter 2020 13 trích dẫn

Final report of the safety assessment of niacinamide and niacin. Review

International journal of … 2005 22 trích dẫn

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Liều lượng thường dùng

general:: 14-16 mg/day NE (RDA)
skinhealth:: 500-1,500 mg/day oral nicotinamide

Giới hạn trên: 35 mg/day for niacin (flushing form); nicotinamide well-tolerated up to 3,000 mg/day

Liều lượng đã nghiên cứu

Liều lượng	Thời gian	Hiệu quả	N
F1: biotin 0.5%, caffeine 2.0%, niacinamide 2.0%; F2: finasteride 0.1%, minoxidil 1.0%, tretinoin 0.	26 weeks	Positive	--
Vitamin B complex (various B vitamins including niacinamide/NAD+ precursor)	--	Positive	--
None	--	Mixed	--
Nicotinamide (vitamin B3)	--	Positive	--
None	--	Mixed	--
None	--	Mixed	--
Niacinamide up to 5%; Niacin up to 0.1%	--	Mixed	--

Thời điểm dùng tốt nhất: With meals; can be split into 2-3 doses

Safety & Side Effects

Tác dụng phụ đã được báo cáo

⚠ Generally well-tolerated (no flushing unlike niacin)
⚠ Mild gastrointestinal discomfort at high doses
⚠ Rare hepatotoxicity at very high doses (> 3,000 mg/day)

Tương tác đã biết

● Anticonvulsants (carbamazepine — may increase niacinamide levels)
● Hepatotoxic drugs (potential additive liver effect at high doses)
● Isoniazid (competes for NAD+ pathways)

Mức hấp thụ tối đa cho phép: 35 mg/day for niacin (flushing form); nicotinamide well-tolerated up to 3,000 mg/day

Luôn tham khảo ý kiến bác sĩ trước khi bắt đầu sử dụng bất kỳ thực phẩm bổ sung nào.Luôn tham khảo ý kiến chuyên gia y tế trước khi sử dụng bất kỳ thực phẩm chức năng nào.

Frequently Asked Questions

Does Niacinamide help with Acne?

Based on 15 studies with 1,200 participants, there is strong evidence from multiple clinical trials that Niacinamide may support Acne management. Our evidence grade is A (Strong Evidence).

How much Niacinamide should I take for Acne?

Studies have used various dosages. A commonly studied range is 14-16 mg/day NE (RDA). Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of Niacinamide?

Reported side effects may include Generally well-tolerated (no flushing unlike niacin), Mild gastrointestinal discomfort at high doses, Rare hepatotoxicity at very high doses (> 3,000 mg/day). Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for Niacinamide and Acne?

We rate the evidence as Grade A (Strong Evidence). This rating is based on 15 peer-reviewed studies with 1,200 total participants. The overall direction of effect is positive.

Các thành phần khác cho Acne

Zinc A Vitamin A (Retinol) C Omega-3 Fatty Acids C Turmeric (Curcumin) C Pantothenic Acid C Green Tea Extract D

Niacinamide cho các tình trạng khác

UV Protection (Internal Photoprotection) A

Đánh giá nhanh

Evidence Strength92%

High confidence

Phân tích nghiên cứu

RCT (0)Meta (1)Other (14)

So sánh lựa chọn thay thế

Xem các thành phần khác so sánh như thế nào cho tình trạng này.

Xem tất cả thành phần cho Acne

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References

[1] Su Ling Young et al.. Eye (Lond). 2025. The adverse effects of oral niacin/nicotinamide - an overview of reviews. doi:10.1038/s41433-025-04027-2 PubMed
[2] Carolina Schettino Kegele et al.. Int J Pharm Compd. 2025. Personalized Compounded Hair Loss Treatments: A Compatibility Assessment of the TrichoConcept™ Vehicle Line. PubMed
[3] Feiya Du et al.. Int J Vitam Nutr Res. 2025. Advanced Applications of Vitamin B Complex in Plastic and Cosmetic Surgery: Mechanisms and Therapeutic Benefits. doi:10.31083/IJVNR39087 PubMed
[4] Giulio Tosti et al.. Nutrients. 2023. The Role of Nicotinamide as Chemo-Preventive Agent in NMSCs: A Systematic Review and Meta-Analysis. doi:10.3390/nu16010100 PubMed
[5] Katherine G Thompson et al.. J Am Acad Dermatol. 2021. Dietary supplements in dermatology: A review of the evidence for zinc, biotin, vitamin D, nicotinamide, and Polypodium. doi:10.1016/j.jaad.2020.04.123 PubMed
[6] Reed Huber et al.. Skin Therapy Lett. 2020. Nicotinamide: An Update and Review of Safety & Differences from Niacin. PubMed
[7] Cosmetic Ingredient Review Expert Panel. Int J Toxicol. 2005. Final report of the safety assessment of niacinamide and niacin. doi:10.1080/10915810500434183 PubMed

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