I am not a homeopathic doctor, so I really cannot prescribe anything along those lines. However, a complete history and evaluation of the patient will help me guide to appropriate therapy. So I recommend a proper consultation. Please be advised that at times medications may need to be taken on medium term to long term basis depending upon the frequency and severity of headache.

Please Consult online. I might be able to help you in this thanks

It is difficult to form a proper diagnosis here on this platform like this. Headache diagnosis requires understanding what are the triggers of the headache. Maintain a headache Diary, and diligently note down the triggers and what increases and decreases your headache. Longstanding headaches have usually one thing that is cropping up again and again in a person's life. Meanwhile relaxation techniques like yoga and deep breathing exercises work like magic in many headaches. Try this and this might make your husband better. Medicines without proper diagnosis are a risky preposition.