Folic Acid: study protocols
374 study groups say how much Folic Acid participants took a day. These are the doses the studies gave. They are not a recommendation.
Dose per serving from products
16,813 products in our catalogue print how much Folic Acid a serving holds.
Most common: 250 mcg to 500 mcg, 38% of 16,813 products.
| Dose per serving | Products |
|---|---|
| 50 mcg or less | 707 |
| 50 mcg to 100 mcg | 834 |
| 100 mcg to 250 mcg | 2,522 |
| 250 mcg to 500 mcg | 6,381 |
| 500 mcg to 1 mg | 4,774 |
| 1 mg to 2.5 mg | 939 |
| over 2.5 mg | 656 |
Dose per serving from research
374 study groups in 199 studies say how much Folic Acid participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 250 mcg to 500 mcg, 49% of 374 study groups.
| Daily dose | Study groups |
|---|---|
| 50 mcg or less | 8 |
| 50 mcg to 100 mcg | 17 |
| 100 mcg to 250 mcg | 33 |
| 250 mcg to 500 mcg | 185 |
| 500 mcg to 1 mg | 88 |
| 1 mg to 2.5 mg | 14 |
| 2.5 mg to 5 mg | 24 |
| over 5 mg | 5 |
Commonly used together
198 of 374 study groups took Folic Acid with something else. Shown: what 3 or more different studies gave. The 10 most common of 20.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Iron | 117 |
| Vitamin B12 | 60 |
| Vitamin B6 | 37 |
| Zinc | 25 |
| Vitamin A | 22 |
| Vitamin C | 16 |
| Vitamin E | 12 |
| Riboflavin | 11 |
| Vitamin D | 11 |
| Iodine | 10 |
374 study groups
| Study | |||
|---|---|---|---|
| Efficacy of folic acid therapy in primary prevention of stroke among adults with hypertension in China: the CSPPT randomized clinical trial 2015 · Enalapril-folic acid group · Adults with hypertension in China, without a history of stroke or myocardial infarction | 800 mcg | 1644 days | 10,348 |
| Effect of folic acid supplementation on cancer risk among adults with hypertension in China: A randomized clinical trial 2017 · enalapril-folic acid group · Adults with hypertension in China without a history of stroke or myocardial infarction; age and sex not specified | 800 mcg | 1643 days | 10,348 |
| Folic acid therapy reduces the risk of mortality associated with heavy proteinuria among hypertensive patients 2017 · Enalapril-folic acid group · Hypertensive patients without a history of major cardiovascular diseases | 800 mcg | 1644 days | 10,348 |
| Efficacy of Folic Acid Therapy on the Progression of Chronic Kidney Disease: The Renal Substudy of the China Stroke Primary Prevention Trial 2016 · Enalapril-folic acid group · Chinese adults aged 45–75 with hypertension, with baseline kidney function ranging from normal to moderate chronic kidney disease | 800 mcg | 1606 days | 7,545 |
| Effects of Folic Acid Therapy on the New-Onset Proteinuria in Chinese Hypertensive Patients: A Post Hoc Analysis of the Renal Substudy of CSPPT (China Stroke Primary Prevention Trial) 2017 · enalapril-folic acid group · Chinese adults with hypertension and no proteinuria at baseline; some had diabetes mellitus | 800 mcg | 1606 days | 6,511 |
| Platelet Count Affects Efficacy of Folic Acid in Preventing First Stroke 2018 · 10 mg enalapril and 0.8 mg folic acid · Chinese hypertensive adults, mean age 59.5 years, 38% male, with no history of stroke or myocardial infarction | 800 mcg | 219 weeks | 5,408 |
| Folic acid supplementation and risk of colorectal neoplasia during long-term follow-up of a randomized clinical trial 2019 · Folic acid · Adults recently diagnosed with colorectal adenomas | 1 mg | — | 516 |
| Risk of basal cell carcinoma in a randomized clinical trial of aspirin and folic acid for the prevention of colorectal adenomas 2018 · 1 mg/d folic acid · Adults aged 21–80 recently diagnosed with colorectal adenomas | 1 mg | 6 years | 443 |
| The influence of folic acid supplement on the outcome of pregnancies in the county of Funen in Denmark. Part I 1999 · 1.0 mg folic acid group · Women of childbearing age who became pregnant; age range and health status not specified | 1 mg | 1187 days | — |
| Effect of folic or folinic acid supplementation on the toxicity and efficacy of methotrexate in rheumatoid arthritis: a forty-eight week, multicenter, randomized, double-blind, placebo-controlled study 2001 · folic acid group · Adults with active rheumatoid arthritis | 1 mg | 48 weeks | — |