Vitamins for our hubs

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Ok so hubby needs something to boost everything to do with sperm. He has taking male vitamins for ttc but make him sick and hard to handle big pills. Does anyone know if they make gummy’s for men to boost the quick all around of sperm? Or what we could try that’s not so harsh on him? When he took the vitamins it made him nauseous and headache and stomach pains etc.