A complete safety, timing, and dosage guide for combining Vitamin A (Retinol, Beta-Carotene) with Valerian Root — including how the two supplements interact, the best time of day to take each, and which populations should be careful.
Yes, you can take vitamin A and valerian root together safely — no known negative interactions.
Vitamin A and valerian root together are safe for most adults. The fat-soluble vitamin does not interfere with valerian's calming effects, and valerian root won't affect vitamin A absorption or storage. No significant interaction has been reported.
Vitamin A is absorbed in the small intestine through fat-dependent micellar uptake and then transported along with chylomicrons to the liver, where it is stored as retinyl esters. Valerian root's primary active constituents, valerenic acid and valepotriates, exert their effects through GABA receptors in the central nervous system and are metabolized primarily by hepatic CYP450 enzymes. Because vitamin A does not require the same metabolizing enzymes or receptor systems, there is no direct competition or induction pathway. Although high doses of vitamin A can affect liver function, normal supplementation does not alter the metabolism of valerian root. Overall, their physiological routes are distinct and non-overlapping.
You can combine vitamin A and valerian root without worrying about spacing — take them whenever it's convenient. For best absorption of vitamin A, take it with your largest meal that contains fat, such as dinner. Valerian root can be taken at the same time or later, about an hour before you plan to sleep. If you miss a dose of either, simply skip it and continue your normal schedule the next day — do not double up. Using a multivitamin with vitamin A and a separate valerian root supplement at night is a simple routine.
The interaction profile is similar for retinol (preformed vitamin A) and beta-carotene (provitamin A), as beta-carotene is first converted to retinal by BCO1 before the same downstream metabolism. Valerian root can be consumed as dried root, capsule, tincture, or tea, and none of these forms changes its relationship with vitamin A. The main consideration is that vitamin A forms differ in absorption efficiency — retinol is more readily absorbed than beta-carotene — so taking vitamin A with dietary fat matters more than worrying about valerian.
Yes, you can take them at the same time. The two do not interact, and there is no known mechanism for them to reduce each other's effectiveness. I often recommend taking them together with your evening meal if that's convenient.
Yes, it is safe for most healthy adults to take these together daily. Just keep vitamin A within your daily recommended allowance – 700–900 mcg RAE for adults – and avoid taking more than 3,000 mcg RAE daily to prevent toxicity. If you use valerian root nightly, its effectiveness may actually improve over several weeks of consistent use.
You do not need to wait any amount of time between taking these two supplements. I usually tell patients to take them together with a meal or plan valerian about an hour before bed – whichever works best for your schedule.
No, they do not compete. Vitamin A is absorbed through fat-dependent pathways in the small intestine, while valerian root's active compounds are absorbed differently and act mainly on the central nervous system. I have no concern about taking them together.
I would advise pregnant women to avoid this combination because high-dose preformed vitamin A is associated with birth defects and valerian root hasn't been proven safe in pregnancy. People with liver disease should check with their doctor, since vitamin A is stored in the liver. Anyone taking sedatives should also discuss valerian root first, as it can add to drowsiness.
Vitamin A should be taken with food that contains fat for optimal absorption, while valerian root is fine on an empty stomach. I recommend taking both together with your evening meal to keep it simple and ensure the vitamin A works well.
Reviewed by Caroline M. on June 1, 2026 for accuracy against the sources listed above. This page is educational and is not a substitute for professional medical advice.
The matrix has 86 supplements and 7310 pairwise interactions. Click any cell to see the full breakdown.