Hawthorn Safe Dosage, Side Effects and Warnings Hawthorn is considered safe for most adults when used for short periods of time. A dosage of 160 to 1600 mg per day taken for 6 to 24 weeks was found to be safe in test trials. Hawthorn may cause unfavorable side effects for pregnant and ...
When applied to the skin: There isn't enough reliable information to know if hawthorn is safe or what the side effects might be. Special Precautions and Warnings When taken by mouth: Hawthorn is possibly safe when used in doses up to 1800 mg daily for up to 16 weeks. There isn't en...