Taking Fefol and additional folic acid together is generally safe, but you should verify this with your doctor or pharmacist first. Fefol is a combination supplement that already contains both iron and folic acid, so adding extra folic acid may be unnecessary and could potentially lead to excessive intake of one or both nutrients.
Folic acid is water-soluble, meaning excess amounts are typically excreted through urine, so toxicity from too much is rare. However, very high doses might cause side effects like nausea or mask symptoms of vitamin B12 deficiency. Iron, the other component in Fefol, is more tightly regulated by the body, but excess iron can accumulate and cause problems over time.
Before combining them, check the folic acid content in your Fefol dose and consider why additional folic acid is being recommended. If your healthcare provider has prescribed both for a specific reason—such as during pregnancy when folic acid needs are higher, or if you have a deficiency that requires extra supplementation—they may determine the combination is appropriate at specific doses.
The safest approach is to disclose all supplements to your doctor or pharmacist, including dosages and frequency. They can review your total nutrient intake and confirm whether taking both is appropriate for your situation, or whether adjusting to a higher-dose Fefol formulation might be a better option. Never assume supplements are safe to combine without professional guidance, even when individual components are generally well-tolerated.